The invention relates to a pump comprising: a pump chamber (2) in which a rotor (1) is arranged, which rotor is mounted in at least one bearing (14, 14', 15, 15') so as to be rotatable about an axis of rotation (3) and has at least one rotor magnet (8, 9) and at least one delivery element (1a, 1b) for delivering a liquid, in particular blood; a stator having a plurality of drive coils (5, 6); and a control device (7); wherein: the rotor has an at least partially electrically conductive target (18) in the form of a body through which measuring alternating magnetic fields, generated by an alternating magnetic field source, can pass; the pump has one or more receiving coils; and the control device is designed to determine a position of the rotor (1) from corresponding alternating voltages and alternating currents. The invention also relates to a method for determining the position of the rotor.
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/822 - Magnetic bearings specially adapted for being actively controlled
A61M 60/855 - Constructional details other than related to driving of implantable pumps or pumping devices
H02P 6/185 - Circuit arrangements for detecting position without separate position detecting elements using inductance sensing, e.g. pulse excitation
A control unit for a blood pump, a pump system comprising such a control unit, and a method for controlling a blood pump may be provided. A control unit may be configured to determine a control signal on the basis of a measurement signal, in such a way that a rotor of a blood pump is supported contact-free in a housing and a rotation of the rotor is closed-loop-controlled, where a specification for a rate of change of the rotation speed of the rotation of the rotor about the rotation axis may be limited upwardly by a predefined maximum rate of change, and to control the stator in accordance with the determined control signal.
A61M 60/538 - Regulation using real-time blood pump operational parameter data, e.g. motor current
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
The application relates to a control unit (200) for a blood pump (300) with a magnetically supported rotor (320) and a stator (340) which is configured to generate a stator magnetic field for exerting a bearing force on the rotor (320) along a bearing direction of action. The blood pump (300) is configured to provide a measurement signal which comprises a disturbance component dependent on a rotation and/or lateral movement of the rotor (320). The control unit (200) is configured to determine, on the basis of the measurement signal, a disturbance signal dependent on the disturbance component, and to determine, on the basis of the measurement signal and the determined disturbance signal, a specification for a bearing control signal in such a way that the rotor (320) is supported in the housing (301) without contact by means of the bearing force, wherein a power consumed for exerting the bearing force is reduced compared with a specification for the bearing control signal which may be determined without taking the disturbance signal into account. The application also relates to a pump system (100) and to a method for controlling a blood pump (200).
A61M 60/538 - Regulation using real-time blood pump operational parameter data, e.g. motor current
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/419 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
A61M 60/822 - Magnetic bearings specially adapted for being actively controlled
G16H 40/63 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for local operation
The invention relates to a rotary machine comprising a stator and a rotatably mounted rotor, with one or more magnetic field sensors arranged stationary relative to the stator at a radial distance from a stationary axis, at least one measuring device which is configured to detect magnetic field changes with the aid of the aforementioned magnetic field sensors, a rotor which is configured to generate one or more electrical signals in each case, said signals having signal components which correspond to the rotor rotation frequency and to the distance between magnetic field sensor and rotor in each case, wherein a demodulator unit carries out a demodulation of signals generated by or derived from the magnetic field sensors, such that a signal is generated which corresponds to the distance between the rotor and the magnetic field sensor.
H02P 6/16 - Circuit arrangements for detecting position
A61M 60/113 - Extracorporeal pumps, i.e. the blood being pumped outside the patient’s body incorporated within extracorporeal blood circuits or systems in other functional devices, e.g. dialysers or heart-lung machines
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
The invention relates to an implantable electrical plug connector with two plug connector parts which can be joined together to make electrical contact, one of which is connected to a first line and the other of which is connected to a second line, wherein each plug connector part has at least one or at least two contact pole parts respectively in the form of a contact pin or a contact socket, which can each be plugged together with the contact pole parts of the other plug connector part to make contact, wherein the longitudinal axes of the contact pole parts (plugging direction of the contact pole parts in which they are moved to establish the plug-in connection) extend at an angle of at least 30 degrees, in particular at an angle of 90 degrees, to a longitudinal axis of the first and/or second plug connector part.
A pump, such as a blood pump, includes a pump chamber with a wall and a fluid connection between an inlet and an outlet, along with an impeller, a motor stator, and a control coil arranged on the pump chamber for exerting, together with first rotor magnets, a controllable axial force on the rotor. A control unit provides a control current for the control coil, in order to hold the rotor in a position which is spaced apart axially from the wall of the pump chamber. A first chamber magnet is arranged close to the winding of the control coil and opposite the first rotor magnet, in order to provide, together with the first rotor magnet, a force between the first rotor magnet and the first chamber magnet, and in order to orient the rotor relative to the wall of the pump chamber.
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/10 - Location thereof with respect to the patient’s body
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A control device for a blood pump is provided. The blood pump control device includes an electronic control unit and an energy storage detachably connectable to the electronic control unit via a plug connection. The plug connection is configured to establish mechanical and electrical connections between the electronic control unit and the energy storage. The plug connection includes a frame of a housing and a frame insertion element. The frame insertion element is insertable into the frame in an insertion direction in at least two orientations that differ by a relative rotation between the frame and the frame insertion element about the insertion direction. The frame and the frame insertion element have one or more electrical coupling pairs to establish the electrical connection and are arranged to establish the electrical connection between the energy storage and the electronic control unit in the two or more orientations.
The invention relates to a control unit (1) for a blood pump (2), comprising: a housing (3); a first electrical energy store (4) and a second electrical energy store (5), which are located in the housing; and a communication interface (6a, 6b) that is electrically couplable to a blood pump for supplying the blood pump with electrical energy; wherein the control unit is designed to provide electrical energy from the first electrical energy store to the communication interface. A significantly increased reliability of energy supply is achieved due to the second energy store located in the housing. The invention also relates to a blood pump arrangement comprising a blood pump, and a control unit of the above-mentioned type.
A61M 60/508 - Electronic control means, e.g. for feedback regulation
A61M 60/13 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel by means of a catheter allowing explantation, e.g. catheter pumps temporarily introduced via the vascular system
A61M 60/871 - Energy supply devicesConverters therefor
9.
CONTROL UNIT FOR OPERATING A BLOOD PUMP IN DIFFERENT CONVEYING MODES
A blood pump with a rotor can be driven to rotate about an axis of rotation for conveying blood. A control is being configured to operate the rotor successively in time, or alternately several times, in a first conveying mode and at least in one second conveying mode. In order to avoid dead water areas in the region of the rotor and possible thrombus formation the direction of rotation of the rotor is reversed in the second conveying mode compared to operation in the first conveying mode.
A61M 60/242 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps with the outlet substantially perpendicular to the axis of rotation
A61M 60/546 - Regulation using real-time blood pump operational parameter data, e.g. motor current of blood flow, e.g. by adapting rotor speed
An easily detachable connection of a hollow cylindrical component, such as a graft, at a recess in tissue, such as a heart or a blood vessel, an annular element, a guide element and a spring element are provided, which are secured by way of a suture ring at the body part and at the hollow cylindrical component, and which permit an easily disengagable mutual locking by way of the spring element. To this end, the annular element comprises a groove extending around the periphery thereof, into which the spring element plunges for locking.
A61B 17/11 - Surgical instruments, devices or methods for closing wounds or holding wounds closedAccessories for use therewith for performing anastomosisButtons for anastomosis
A61B 17/00 - Surgical instruments, devices or methods
F16L 37/098 - Couplings of the quick-acting type in which the connection between abutting or axially-overlapping ends is maintained by locking members combined with automatic locking by means of flexible hooks
The application relates to a fluid pump (100) for cardiac assistance and a rotor (200, 200A, 200B, 200C, 200D, 200E) for such a fluid pump (100). The rotor comprises a rotor magnet arrangement (210) for supporting, in a non-contact manner, the rotor (200, 200A, 200B, 200C, 200D, 200E) within a cavity (310) of the fluid pump (100) in such a manner that the rotor (200, 200A, 200B, 200C, 200D, 200E) can be rotated about an axis of rotation (400) to convey a fluid from an inlet (311) of the cavity (310) to an outlet (312) of the cavity (310) and a first end (201) of the rotor (200, 200A, 200B, 2000, 200D, 200E) is arranged closer to the inlet (311) than a second end (202) of the rotor (200, 200A, 200B, 200C, 200D, 200E) opposite the first end (201) along the axis of rotation (400), a hub structure (220), which is arranged on the first end (201) and is centred about the axis of rotation (400) and comprises one or more magnets of the rotor magnet arrangement (210), a base plate (230) arranged on the second end (202) or between the hub structure (220) and the second end (202) and having a blading (240) to convey the fluid, wherein intermediate spaces of the blading (240) form fluid channels (241) that open into respective outlet openings (242) and are delimited with respect to the second end (202) by the base plate (230), wherein at least one of the, preferably each of the, fluid channels (241) has a through opening (246) connecting the fluid channel (241) to the cavity (310), which through opening extends between the outlet opening (242) and the hub structure (220) at least in some regions along a first side of the fluid channel (241) facing the first end (201).
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/221 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having both radial and axial components, e.g. mixed flow pumps
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
The present disclosure relates to a safety mechanism for locking and releasing a first unit to/from a second unit, in particular for locking and releasing a rechargeable battery unit (1) of a VAD system to/from a control unit (2) of a VAD system. The safety mechanism comprises a latching hook (21) having a latching lug (22), a latching opening (11) and a first actuation element (12). In a resting position, the latching hook (21) engages the latching opening (11) in such a way that the latching hook (21) projects through the latching opening (11) and the latching lug (22) latches at least partly onto a border of the latching opening (11). In a pre-release position, the latching hook (21) at least partly engages the latching opening (11) in such a way that at least part of the latching hook (21) protrudes through the latching opening and the latching lug (22) is released from the border of the latching opening (11). In a release position, the latching hook (21) is located outside the latching opening (11). The actuation element is designed in such a way that actuating the actuation element (12) moves the latching hook (21) and/or the latching opening (11) from the pre-release position into the release position.
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/508 - Electronic control means, e.g. for feedback regulation
A61M 60/871 - Energy supply devicesConverters therefor
H01M 50/262 - MountingsSecondary casings or framesRacks, modules or packsSuspension devicesShock absorbersTransport or carrying devicesHolders with fastening means, e.g. locks
A connecting device is provided for connecting a pipe or tube-shaped element to the heart or a blood vessel of a patient, comprising a suture ring that has an opening, which can be closed by means of a closure element and through which said pipe or tube-shaped element is guided in the axial direction. The closure element is secured to the suture ring by means of at least one elastic securing element. A radially-expandable sealing element can also be provided in order to establish a sealing placement of the closure element against the suture ring.
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
A61B 17/00 - Surgical instruments, devices or methods
A61B 17/12 - Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
A61M 39/12 - Tube connectors or tube couplings for joining a flexible tube to a rigid attachment
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/861 - Connections or anchorings for connecting or anchoring pumps or pumping devices to parts of the patient’s body
A61B 17/22 - Implements for squeezing-off ulcers or the like on inner organs of the bodyImplements for scraping-out cavities of body organs, e.g. bonesSurgical instruments, devices or methods for invasive removal or destruction of calculus using mechanical vibrationsSurgical instruments, devices or methods for removing obstructions in blood vessels, not otherwise provided for
14.
Rotary blood pump for regulating a hemodynamic parameter successively to different target values
A blood pump for supporting the heart may be provided that includes: a rotor with delivery elements; a rotor drive; a pressure sensor; and a regulating device that regulates a pressure or a hemodynamic parameter by means of control of the rotor drive. The pressure and/or the hemodynamic parameter may be determined by means of one or a plurality of hemodynamic sensors and/or from operating parameters of the pump. The regulating device may be suitable for regulating a hemodynamic parameter successively, such as periodically, to different target values. Using such regulation, the blood pump may be operated in an optimized manner, and operation of the blood pump may be varied in a targeted and patient-protective manner in order to attain certain goals.
A61M 60/554 - Regulation using real-time blood pump operational parameter data, e.g. motor current of blood pressure
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/515 - Regulation using real-time patient data
A61M 60/531 - Regulation using real-time patient data using blood pressure data, e.g. from blood pressure sensors
A fluid pump conveys a fluid, such as blood. A fluid channel that is bounded by a channel wall and a rotor arranged in the fluid channel and that is rotatably mounted about a pivot point of the bearing with a mechanical, hydrodynamic and/or hydrostatic, axial and radial bearing. The fluid channel has a spherical section and the rotor has a rotor body and a conveying element that is arranged within the spherical section of the fluid channel and configured to generate a substantially spherical rotational area of the rotor. The spherical center of the spherical section of the fluid channel and the spherical center of the spherical rotational area substantially coincide with the pivot point so that a minimum distance between the rotor and the channel wall is maintained in the spherical section upon a tilting of the rotor.
A61M 60/416 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor transmitted directly by the motor rotor drive shaft
A61M 60/405 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being hydraulic or pneumatic
A61M 60/825 - Contact bearings, e.g. ball-and-cup or pivot bearings
A connector unit for a control unit is configured to control an implantable blood pump. The connector unit includes a supply interface designed for connecting the connector unit to a power supply, a data interface designed for connecting the connector unit to a data processing unit, and a control interface designed for connecting the connector unit to an integrated interface of the control unit. A supply connection of the control unit to the power supply and a data connection of the control unit to the data processing unit can be established at the same time by means of the connector unit. The application furthermore relates to a control unit for controlling an implantable blood pump and to a control system for an implantable blood pump.
A61M 60/871 - Energy supply devicesConverters therefor
H01R 13/52 - Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
A61M 60/126 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel
17.
CONTROL UNIT FOR A BLOOD PUMP, PUMP SYSTEM AND METHOD
The application relates to a control unit (200) for a blood pump (300), to a pump system (100) having a control unit (200) of this type, and to a method for controlling a blood pump (300). The blood pump (300) comprises a magnetically supported rotor (320) and a stator (340) for applying a support force along a support effective direction and a torque to the rotor (320) and is designed to provide a measurement signal, comprising a component dependent on motion of the rotor (32) along the support effective direction and a component dependent on rotation of the rotor (320). The control unit (200) is designed to determine a control signal on the basis of the measurement signal, such that the rotor (320) is contactlessly supported in a housing (301) and rotation of the rotor (320) is controlled, there being a predefined maximum rate of change which serves as an upper limit to a specification for a rate of change of the rotational velocity of the rotation of the rotor (320) about the axis of rotation (X), and to control the stator (340) according to the determined control signal.
A61M 60/122 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/538 - Regulation using real-time blood pump operational parameter data, e.g. motor current
A61M 60/546 - Regulation using real-time blood pump operational parameter data, e.g. motor current of blood flow, e.g. by adapting rotor speed
A61M 60/822 - Magnetic bearings specially adapted for being actively controlled
18.
CONTROL UNIT FOR A BLOOD PUMP, PUMP SYSTEM, AND METHOD
The invention relates to a control unit (200) for a blood pump (300) having a magnetically mounted rotor (320) and a stator (340) which is designed to generate a stator magnetic field in order to exert a bearing force on the rotor (320) in an effective direction of the bearing. The blood pump (300) is designed to provide a measurement signal that comprises a spurious component dependent on a rotation and/or lateral movement of the rotor (320). For this purpose, the control unit (200) is designed to determine, on the basis of the measurement signal, a spurious signal dependent on the spurious component, and, on the basis of the measurement signal and the determined spurious signal, to determine a default for a bearing control signal such that the rotor (320) is contactlessly mounted in the housing (301) by means of the bearing force, wherein a power consumed in order to exert the bearing force is reduced with respect to a default for the bearing control signal, which default can be determined without taking the spurious signal into account. The invention also relates to a pump system (100) and to a method for controlling a blood pump (200).
A61M 60/122 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/538 - Regulation using real-time blood pump operational parameter data, e.g. motor current
A61M 60/822 - Magnetic bearings specially adapted for being actively controlled
Medical apparatus and instruments; Surgical and wound treating equipment; Cannulae; Heart support devices and drives therefor; Cardiovascular instruments.
A control device for a heart pump, comprising a device for establishing the end-diastolic filling pressure in a ventricle and a device for associating a delivery rate of the pump, in particular a pump speed or an electric pump capacity, with the established end-diastolic filling pressure. By taking into account the end-diastolic filling pressure, a robust operating option of the heart pump, similar to the physio-logical control, is created.
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
A61M 60/165 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart
A61M 60/531 - Regulation using real-time patient data using blood pressure data, e.g. from blood pressure sensors
A61M 60/554 - Regulation using real-time blood pump operational parameter data, e.g. motor current of blood pressure
21.
CONNECTION SYSTEM FOR TRANSMITTING ENERGY AND/OR DATA FROM AND/OR TO AN IMPLANTABLE BLOOD PUMP, AND VENTRICULAR ASSIST DEVICE
The application relates to a connection system for transmitting energy and/or data from and/or to an implantable blood pump. The proposed connection system comprises a first connection unit, which can be or is connected to the blood pump, and a second connection unit, which can be or is connected to a control and/or energy unit. In particular, the first connection unit can be connected to the blood pump by means of an implantable line. The second connection unit can be connected to the control and/or energy unit by means of a transcutaneous line. The first connection unit and the second connection unit can be wirelessly coupled to each other for wireless transmission of energy and/or data. Furthermore, the first connection unit and the second connection unit are implantable, so that both the first connection unit and the second connection unit are designed for use within the body of a patient.
A61M 60/878 - Electrical connections within the patient’s body
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A pump, in particular a blood pump, comprising a pump chamber with a wall and a fluid connection between an inlet and an outlet; an impeller; a motor stator; a control coil arranged on the pump chamber for exerting, together with first rotor magnets, a controllable axial force on the rotor; a control unit for providing a control current for the control coil, in order to hold the rotor in a position which is spaced apart axially from the wall of the pump chamber; a first chamber magnet arranged close to the winding of the control coil and so as to lie opposite the first rotor magnet, in order to provide, together with the first rotor magnet, a force between the first rotor magnet and the first chamber magnet, in order to orient the rotor relative to the wall of the pump chamber.
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
The invention relates to a rotary machine comprising a stator and a rotatably mounted rotor, with one or more magnetic field sensors arranged stationary relative to the stator at a radial distance from a stationary axis, at least one measuring device which configured to detect magnetic field changes with the aid of the aforementioned magnetic field sensors, a rotor which is configured to generate one or more electrical signals in each case, said signals having signal components which correspond to the rotor rotation frequency and to the distance between magnetic field sensor and rotor in each case, wherein a demodulator unit carries out a demodulation of signals generated by or derived from the magnetic field sensors, such that a signal is generated which corresponds to the distance between the rotor and the magnetic field sensor.
A61M 60/113 - Extracorporeal pumps, i.e. the blood being pumped outside the patient’s body incorporated within extracorporeal blood circuits or systems in other functional devices, e.g. dialysers or heart-lung machines
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
The application pertains to a blood pump system, in particular a ventricular assist device, VAD, the system including a blood pump, which comprises: a housing, including an inlet and an outlet, preferably an axial influx and a tangential outflow; a motor actuator, wherein the motor includes a plurality of motor coils (for driving an impeller); an impeller, wherein the impeller is located in the housing and includes a plurality of rotor magnets.
The application pertains to a blood pump system, in particular a ventricular assist device, VAD, the system including a blood pump, which comprises: a housing, including an inlet and an outlet, preferably an axial influx and a tangential outflow; a motor actuator, wherein the motor includes a plurality of motor coils (for driving an impeller); an impeller, wherein the impeller is located in the housing and includes a plurality of rotor magnets.
The system further comprises a drive line; and a control unit for controlling operation of the pump, the control unit configured to:
operate the motor, such that the impeller rotates around an axis; and
measure the rotor position in a direction along the axis using at least one of the plurality of the motor coils.
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/226 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly radial components
A61M 60/546 - Regulation using real-time blood pump operational parameter data, e.g. motor current of blood flow, e.g. by adapting rotor speed
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/822 - Magnetic bearings specially adapted for being actively controlled
A heart support system is provided includes a control unit and sound-generating devices, said control unit configured to detect and process alarm events and to carry out control tasks in the heart support system. The heart support system further includes a storage device configured to store one or more defined alarm signal time curves and one or more alarm priorities. Each alarm signal time curve and each alarm priority is assigned to an alarm event. A sound-generation controller is configured such that when an alarm event is detected, the controller overlays a volume time curve onto the alarm signal time curve assigned to the alarm event in the storage device, said volume time curve based on the alarm priority assigned to the respective alarm event in the storage device and the length of time since the detection of the alarm event.
A pump system is provided comprising a diaphragm fluid pump which can be fluidically connected to a heart and/or at least one blood vessel by means of an inlet cannula and an outlet cannula and is adapted for generating a pulsatile fluid flow for supporting a cardiac activity of the heart, a working pressure source connected to the diaphragm fluid pump by means of a pressure line and adapted for providing a working pressure for driving the diaphragm fluid pump, a control unit adapted for controlling the working pressure, a first flow sensor adapted for detecting a first cannula flow signal corresponding to an inlet flow in the inlet cannula or an outlet flow in the outlet cannula, a working pressure sensor adapted for detecting a working pressure signal corresponding to the working pressure in the pressure line.
A61M 60/546 - Regulation using real-time blood pump operational parameter data, e.g. motor current of blood flow, e.g. by adapting rotor speed
A61M 60/268 - Positive displacement blood pumps including a displacement member directly acting on the blood the displacement member being flexible, e.g. membranes, diaphragms or bladders
A61M 60/122 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body
A61M 60/427 - Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being hydraulic or pneumatic
A61M 60/562 - Electronic control means, e.g. for feedback regulation for making blood flow pulsatile in blood pumps that do not intrinsically create pulsatile flow
The application relates to a connector unit (3) for a control unit (2) designed to actuate an implantable blood pump (4), wherein the connector unit (3) comprises: a supply interface (5) designed for connecting the connector unit (3) to a power supply (6), a data interface (7) designed for connecting the connector unit (3) to a data processing unit (8), and a control interface (9) designed for connecting the connector unit (3) to an integrated interface (10) of the control unit (2), such that a supply connection of the control unit (2) to the power supply (6) and a data connection of the control unit (2) to the data processing unit (8) can be produced at the same time by means of the connector unit (3). The application furthermore relates to a control unit (2) for actuating an implantable blood pump (4) and to a control system for an implantable blood pump (4).
The present application relates to an implantable blood pump for assisting a heart function. The blood pump comprises a heat source and a wall that delimits a flow cannel. In addition, the blood pump comprises a heat distributor for distributing heat generated by the heat source to a surface of the wall. In order to transfer heat from the heat source to the blood conveyed in the flow channel, the heat distributor is thermally conductively connected to the heat source and thermally conductively connected to the opposite face of the wall from the flow channel.
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A drive unit for a diaphragm pump may be provided, wherein the drive unit comprises a hollow body and a piston which is arranged so as to be movable in the first hollow body along an axis of the hollow body, wherein the piston divides the hollow body into a first chamber, which is connectable to the diaphragm pump, and a second chamber, which is coupleable to a gas reservoir. The second chamber comprises an inlet valve and an outlet valve, such that a gas flow is drawn into the chamber via the inlet valve and is forced out of the chamber via the outlet valve.
A61M 60/104 - Extracorporeal pumps, i.e. the blood being pumped outside the patient’s body
A61M 60/117 - Extracorporeal pumps, i.e. the blood being pumped outside the patient’s body for assisting the heart, e.g. transcutaneous or external ventricular assist devices
A61M 60/268 - Positive displacement blood pumps including a displacement member directly acting on the blood the displacement member being flexible, e.g. membranes, diaphragms or bladders
A61M 60/435 - Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being hydraulic or pneumatic with diastole or systole switching by valve means located between the blood pump and the hydraulic or pneumatic energy source
A61M 60/441 - Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being mechanical generated by an electromotor
A61M 60/835 - Constructional details other than related to driving of positive displacement blood pumps
F04B 5/00 - Machines or pumps with differential-surface pistons
F04B 23/06 - Combinations of two or more pumps the pumps being all of reciprocating positive-displacement type
30.
PUMP SYSTEM FOR PUMPING A FLUID AND METHOD FOR OPERATING A PUMP SYSTEM
A pump system is provided for pumping a fluid and a method is provided for operating the pump system. The pump system comprises a first diaphragm fluid pump, a first inlet cannula connected to the first diaphragm fluid pump for supplying a fluid to the first diaphragm fluid pump, a first outlet cannula connected to the first diaphragm fluid pump for discharging the fluid out of the first diaphragm fluid pump, and a first service pump, which is connected via a first pressure line to the first diaphragm fluid pump and is confirmed to drive the first diaphragm fluid pump via the first pressure line. The pump system further comprises a first inlet flow sensor for detecting a first inlet flow of the fluid in the first inlet cannula and/or a first outlet flow sensor for detecting a first outlet flow of the fluid in the first outlet cannula.
A61M 60/554 - Regulation using real-time blood pump operational parameter data, e.g. motor current of blood pressure
A61M 60/523 - Regulation using real-time patient data using blood flow data, e.g. from blood flow transducers
A61M 60/268 - Positive displacement blood pumps including a displacement member directly acting on the blood the displacement member being flexible, e.g. membranes, diaphragms or bladders
A61M 60/441 - Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being mechanical generated by an electromotor
A61M 60/427 - Details relating to driving for positive displacement blood pumps the force acting on the blood contacting member being hydraulic or pneumatic
A61M 60/894 - Passive valves, i.e. valves actuated by the blood
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
31.
CARDIAC DRAINAGE CANNULA AND RELATED METHODS AND SYSTEMS
A method of placing a cardiac drainage cannula into a patient's heart is provided. The method may comprise the steps of (a) inserting the cannula percutaneously into an internal jugular vein, (b) advancing the cannula through the internal jugular vein and into the right atrium of the heart, and (c) advancing the cannula through the atrial septum into the left atrium of the heart. A method of draining blood from the left atrium or left ventricle of a patient's heart using a cardiac drainage cannula is provided. A cardiac drainage cannula and a mechanical circulatory support system are also provided.
A fluid pump is provided for delivering a fluid, particularly blood, comprising: a housing with a fluid inlet and a fluid outlet and a rotor, which is mounted in the housing such that it can rotate about an axis of rotation in order to deliver the fluid from the fluid inlet to the fluid outlet, the rotor being mounted in the housing by means of a mechanical bearing. A flow cross-section between the rotor and the housing has a local or partial flow cross-section minimum in the direction of the axis of rotation in the region of the mechanical bearing.
A61M 60/122 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A switching unit may be provided for connecting a first pneumatic unit and a second pneumatic unit of a pneumatic system together. The switching unit comprises a main body having: a channel structure which extends through the main body; a first and a second inlet for introducing a pressure into the channel structure; a first and a second outlet for discharging at least some of the pressure from the channel structure; and a first and a second valve; wherein the first inlet can be brought into a pressure-exchange connection to the first outlet via a first channel by setting a first switch position of the first valve or to the second outlet via a second channel by setting a second switch position of the first valve, and wherein the second inlet can be brought into a pressure-exchange connection to the first outlet via a third channel by setting a first switch position of the second valve or to the second outlet via a fourth channel by setting a second switch position of the second valve.
A method is provided for producing a bearing arrangement for an implantable blood pump. A bearing arrangement and an implantable blood pump are also provided. In the method, a rotor may be provided having one or more drive magnets. The rotor has a conveying element. In addition, a stator having stator windings is provided. Furthermore, the rotor is arranged in a flow channel formed by an inside wall of the stator. A rotor rotation is then driven. While the rotor rotation is driven, a deflection of the rotor is determined. In addition, the deflection of the rotor may be corrected by applying, removing, magnetizing and/or demagnetizing magnetically active material on the stator and/or on the rotor in a non-rotationally symmetrical manner.
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/17 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart inside a ventricle, e.g. intraventricular balloon pumps
A61M 60/822 - Magnetic bearings specially adapted for being actively controlled
A61M 60/237 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
35.
BLOOD PUMP FOR SUPPORTING HEART FUNCTION AND METHOD FOR PRODUCING A PUMP HOUSING OF A BLOOD PUMP
A blood pump may be provided for supporting heart function. A method may be provided for producing a pump housing of the blood pump. The provided blood pump comprises an implantable pump housing. The blood pump additionally comprises a fiber optic sensor comprising an optical fiber. The optical fiber is at least partially accommodated in a housing part of the pump housing.
A61M 60/816 - Sensors arranged on or in the housing, e.g. ultrasound flow sensors
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
A61M 60/531 - Regulation using real-time patient data using blood pressure data, e.g. from blood pressure sensors
36.
CONNECTION SYSTEM FOR TRANSMITTING ENERGY AND/OR DATA FROM AND/OR TO AN IMPLANTABLE BLOOD PUMP, AND VENTRICULAR ASSIST DEVICE
The application relates to a connection system (12) for transmitting energy and/or data from and/or to an implantable blood pump (2). The proposed connection system (12) comprises a first connection unit (14), which can be or is connected to the blood pump (2), and a second connection unit (16), which can be or is connected to a control and/or energy unit (5). In particular, the first connection unit (14) can be connected to the blood pump (2) by means of an implantable line (13). The second connection unit (16) can be connected to the control and/or energy unit (5) by means of a transcutaneous line (6). The first connection unit (14) and the second connection unit (16) can be wirelessly coupled to each other for wireless transmission of energy and/or data. Furthermore, the first connection unit (14) and the second connection unit (16) are implantable, and thus both the first connection unit (14) and the second connection unit (16) are designed for use within the body of a patient.
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/878 - Electrical connections within the patient’s body
A component for conducting a fluid having a sensor, wherein the component comprises an inner and an outer wall, where-in the inner wall is configured to conduct the fluid, the outer wall terminates the component to the outside, and a wall region is formed between the inner and outer walls. The component in accordance with the invention is characterized in that the sensor has an electromechanical element and is arranged in the wall region at the inner wall, wherein the sensor is adapted to measure a degree of deformation of the inner wall in the region of the sensor by means of the sensor element and to output it as an electrical signal, wherein the sensor element preferably has a length and/or a width of ≤50 μm.
A61M 60/403 - Details relating to driving for non-positive displacement blood pumps
A61M 60/122 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
A61M 60/165 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/523 - Regulation using real-time patient data using blood flow data, e.g. from blood flow transducers
A61M 60/531 - Regulation using real-time patient data using blood pressure data, e.g. from blood pressure sensors
A61M 60/546 - Regulation using real-time blood pump operational parameter data, e.g. motor current of blood flow, e.g. by adapting rotor speed
A61M 60/554 - Regulation using real-time blood pump operational parameter data, e.g. motor current of blood pressure
A61M 60/816 - Sensors arranged on or in the housing, e.g. ultrasound flow sensors
A bearing assembly may be provided for mounting a rotor which can be rotated about a rotational axis. In particular, for a rotary fluid pump or rotary blood pump comprising: a main body, a bearing element which can be displaced relative to the main body in the direction of the rotational axis for receiving the rotor, and an adjusting device which is connected to the bearing element for displacing the bearing element in the direction of the rotational axis by a predefined distance, wherein the predefined distance is <=500 micrometres.
Methods and apparatuses for determining operational parameters of a blood pump comprising a rotor which transports the blood are provided. The change in the behaviour of at least one first and one second operational parameter, independently from each other, of the pump, is determined. A determination of the flow through the pump and/or the difference in pressure across the pump and/or the viscosity of the blood takes into account the determined change in behaviour of the at least two operational parameters. A modelling for a dynamic model of the known quantities may be carried out and an estimation method using a Kalman filter may be used.
F04D 7/00 - Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
A61M 60/165 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart
A61M 60/196 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body replacing the entire heart, e.g. total artificial hearts [TAH]
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/419 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/515 - Regulation using real-time patient data
A61M 60/554 - Regulation using real-time blood pump operational parameter data, e.g. motor current of blood pressure
A61M 60/562 - Electronic control means, e.g. for feedback regulation for making blood flow pulsatile in blood pumps that do not intrinsically create pulsatile flow
G01L 13/00 - Devices or apparatus for measuring differences of two or more fluid pressure values
G01N 11/02 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by measuring flow of the material
H02P 6/182 - Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings
A pump is provided with a housing and with an upstream inlet and a downstream outlet and a fluid channel with a channel axis, said fluid channel being arranged between the inlet and outlet. A rotor which can be brought into rotation by way of a motor is arranged within the fluid channel. Furthermore, a sensor arrangement is provided which can detect an inclination of the rotation axis of the rotor.
F04D 29/52 - CasingsConnections for working fluid for axial pumps
A61M 60/237 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
A61M 60/226 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly radial components
A61M 60/419 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
A61M 60/221 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having both radial and axial components, e.g. mixed flow pumps
A61M 60/17 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart inside a ventricle, e.g. intraventricular balloon pumps
A61M 60/816 - Sensors arranged on or in the housing, e.g. ultrasound flow sensors
F04D 15/00 - Control, e.g. regulation, of pumps, pumping installations, or systems
A fluid pump for conveying a fluid is provided comprising: a housing with a fluid inlet and a fluid outlet, a rotor which is disposed rotatably about an axis of rotation in the housing, and a rotor body and at least one conveying element connected rigidly to the rotor body in order to convey the fluid from the fluid inlet to the fluid outlet, the rotor being mounted in the housing radially to the axis of rotation by means of a passive magnetic bearing and also axially and radially by means of a mechanical and/or hydrodynamic bearing disposed on the inlet side or outlet side. A safety bearing is disposed on one side of the rotor situated opposite the mechanical and/or hydrodynamic bearing, wherein the safety bearing has a first safety bearing component connected rigidly to the rotor and a second safety bearing component connected rigidly to the housing.
F04D 29/52 - CasingsConnections for working fluid for axial pumps
A61M 60/237 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
A61M 60/226 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly radial components
A61M 60/419 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
A61M 60/221 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having both radial and axial components, e.g. mixed flow pumps
A61M 60/17 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart inside a ventricle, e.g. intraventricular balloon pumps
A method and a device for the measurement of one or more fluid-mechanically effective parameters of a fluid, with a fluid pump which comprises a delivery element which is mounted in a magnet bearing, and the delivery element of the fluid pump is excited into an oscillation by way of an excitation device, wherein the oscillation parameters as well as, as the case may be, the oscillation behaviour is measured, and parameters of the fluid are determined from this.
G01N 11/16 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by measuring damping effect upon oscillatory body
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/822 - Magnetic bearings specially adapted for being actively controlled
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/546 - Regulation using real-time blood pump operational parameter data, e.g. motor current of blood flow, e.g. by adapting rotor speed
A61M 60/816 - Sensors arranged on or in the housing, e.g. ultrasound flow sensors
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
An inlet cannula is provided for supplying a fluid from a human vessel to a fluid pump, the inlet cannula formed as a hollow structure suitable for conveying the fluid and a surface of the inlet cannula has an ingrowth zone and an inlet zone separated from each other by a tear-off edge extending in the circumferential direction of the inlet cannula, wherein a first tangent to the inlet zone on the tear-off edge has an angle to a longitudinal axis of the inlet cannula of >0° and <180°, and wherein a surface roughness in the ingrowth zone is greater than a surface roughness in the inlet zone, and wherein along the flow direction the ingrowth zone is concave, convex, or not curved and the inlet zone is convexly curved, and wherein the tear-off edge forms a curvature transition between the ingrowth zone and the inlet zone.
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
The application pertains to a blood pump system, in particular a ventricular assist device, VAD, the system including a blood pump, which comprises: a housing, including an inlet and an outlet, preferably an axial influx and a tangential outflow; a motor actuator, wherein the motor includes a plurality of motor coils (for driving an impeller); an impeller, wherein the impeller is located in the housing and includes a plurality of rotor magnets. The system further comprises a drive line; and a control unit for controlling operation of the pump, the control unit configured to: ‐ operate the motor, such that the impeller rotates around an axis; and ‐ measure the rotor position in a direction along the axis using at least one of the plurality of the motor coils.
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/226 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly radial components
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/538 - Regulation using real-time blood pump operational parameter data, e.g. motor current
A61M 60/822 - Magnetic bearings specially adapted for being actively controlled
The invention relates to a rotary machine comprising a stator (13) and a rotatably mounted rotor (11), with one or more magnetic field sensors (12) arranged stationary relative to the stator (13) at a radial distance from a stationary axis (20), at least one measuring device (1) which is designed to detect magnetic field changes with the aid of the aforementioned magnetic field sensors (12), a rotor (11) which is designed to generate one or more electrical signals in each case with one or more constant magnetic source voltages and with one or more of the magnetic field sensors (12), said signals having signal components which correspond to the rotor rotation frequency (171) and to the distance between magnetic field sensor (12) and rotor (11) in each case, characterised by a demodulator unit (4) which is designed to carry out a demodulation of signals generated by or derived from the magnetic field sensors (12), so that a signal (140) is generated which corresponds to the distance between the rotor (11) and the magnetic field sensor (12) assigned to the specific signal.
G01D 5/14 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
G01D 5/12 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means
G01D 5/20 - Mechanical means for transferring the output of a sensing memberMeans for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for convertingTransducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
F16C 32/04 - Bearings not otherwise provided for using magnetic or electric supporting means
47.
PUMP SYSTEM, CONTROL UNIT AND METHOD FOR OPERATING A PUMP SYSTEM
The invention relates to a pump system (1), comprising a diaphragm fluid pump (2), which can be fluidically connected to a heart and/or at least one blood vessel by means of an inlet cannula (9) and an outlet cannula (11) and which is designed to generate a pulsatile fluid flow in order to support cardiac activity of the heart, a working pressure source (3) which is connected to the diaphragm fluid pump (2) by means of a pressure line (15) and which is designed for providing a working pressure in order to drive the diaphragm fluid pump (2), a control unit (4) designed for controlling the working pressure, a first flow sensor (21) which is designed for detecting a first cannula flow signal corresponding to an inlet flow in the inlet cannula (9) or an outlet flow in the outlet cannula (11), and a working pressure sensor (20) which is designed for detecting a working pressure signal corresponding to the working pressure in the pressure line (15), wherein the pulsatile fluid flow comprises multiple consecutive pump cycles, the cardiac activity comprises multiple consecutive cardiac cycles, and each of the pump cycles comprises a filling phase and an emptying phase. The control unit (4) is also designed to determined a time offset between a first time occurring during a first pump cycle and a second time occurring during a first cardiac cycle, to determine a haemodynamic parameter set, comprising one or more haemodynamic parameters, based on the time offset and/or the first cannula flow signal and/or the working pressure signal, and to determine a timing as a specification for a start and/or a duration of the filling phase and/or the emptying phase of the first pump cycle and/or at least one second pump cycle, occurring after the first pump cycle, based on a rule as a specification for the haemodynamic parameter set and/or for the time offset, in such a way that the rule specification is achieved. The invention also relates to a control unit (4) for a pump system (1), and to a method for operating a pump system (1).
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
The invention relates to a heart support system (1) with a control unit (2) and sound-generating devices (4), said control unit (2) being designed to detect and process alarm events (43) and to carry out control tasks in the heart support system (1). The heart support system is characterized by a storage device (6), which is designed to store one or more defined alarm signal time curves (45) and one or more alarm priorities (42) such that each alarm signal time curve (45) and each alarm priority (42) is assigned to an alarm event (43), and a sound-generation controller (8), which is designed such that when an alarm event (43) is detected, the controller overlays a volume time curve onto the alarm signal time curve (45) assigned to the alarm event (43) in the storage device (6), said volume time curve being based on the alarm priority (42) assigned to the respective alarm event (43) in the storage device (6) and the length of time since the detection of the alarm event (43). The invention also relates to the aforementioned sound-generation controller (8), which is designed to actuate the sound-generating devices (4) upon detecting an alarm event (43) such that the sound generating devices convert the aforementioned alarm signal time curve (45) with the overlaid volume time curve into sound signals.
A blood pump for supporting the heart may be provided that includes: a rotor with delivery elements; a rotor drive; a pressure sensor; and a regulating device that regulates a pressure or a hemodynamic parameter by means of control of the rotor drive. The pressure and/or the hemodynamic parameter may be determined by means of one or a plurality of hemodynamic sensors and/or from operating parameters of the pump. The regulating device may be suitable for regulating a hemodynamic parameter successively, such as periodically, to different target values. Using such regulation, the blood pump may be operated in an optimized manner, and operation of the blood pump may be varied in a targeted and patient-protective manner in order to attain certain goals.
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
A61M 60/515 - Regulation using real-time patient data
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/531 - Regulation using real-time patient data using blood pressure data, e.g. from blood pressure sensors
A61M 60/554 - Regulation using real-time blood pump operational parameter data, e.g. motor current of blood pressure
A blood pump may be provided that includes an inlet, an outlet and a rotor for delivering fluid from the inlet to the outlet, wherein the rotor is suspended within the blood pump by radial passive magnetic forces and axially is preloaded in one direction at least by way of passive magnetic forces so that, during a fluid-delivering rotation of the rotor, the axial thrust of the rotor acts counter to the magnetic attraction acting axially in the direction of the outlet.
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/508 - Electronic control means, e.g. for feedback regulation
A61M 60/122 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body
A61M 60/237 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
51.
CANNULA SYSTEM AND METHOD FOR DISCHARGING THE VOLUME OF A HEART
A cannula system for puncturing the heart is provided, comprising a cannula and a trocar. The cannula comprises a cannula shaft with a heart-side inlet and a pump-side outlet. The trocar has a trocar shaft which can be inserted into the lumen of the cannula and which comprises a puncturing tip, wherein the puncturing tip can completely cover the inlet opening of the cannula.
The disclosure provides a method of placing a cardiac drainage cannula into a patient's heart. In some embodiments, the method comprises the steps of (a) inserting the cannula percutaneously into an internal jugular vein, (b) advancing the cannula through the internal jugular vein and into the right atrium of the heart, and (c) advancing the cannula through the atrial septum into the left atrium of the heart. Further aspects of the disclosure provide a method of draining blood from the left atrium or left ventricle of a patient's heart using a cardiac drainage cannula. The disclosure also provides a cardiac drainage cannula and a mechanical circulatory support system.
A61M 60/113 - Extracorporeal pumps, i.e. the blood being pumped outside the patient’s body incorporated within extracorporeal blood circuits or systems in other functional devices, e.g. dialysers or heart-lung machines
A61M 60/531 - Regulation using real-time patient data using blood pressure data, e.g. from blood pressure sensors
A61M 60/562 - Electronic control means, e.g. for feedback regulation for making blood flow pulsatile in blood pumps that do not intrinsically create pulsatile flow
The disclosure provides a method of placing a cardiac drainage cannula into a patient's heart. In some embodiments, the method comprises the steps of (a) inserting the cannula percutaneously into an internal jugular vein, (b) advancing the cannula through the internal jugular vein and into the right atrium of the heart, and (c) advancing the cannula through the atrial septum into the left atrium of the heart. Further aspects of the disclosure provide a method of draining blood from the left atrium or left ventricle of a patient's heart using a cardiac drainage cannula. The disclosure also provides a cardiac drainage cannula and a mechanical circulatory support system.
A cannula system is provided. The system may comprise: a cannula having a hose element having front and rear end regions, wherein a channel extends from the front end region to the rear end region, a hollow body having a front end region, and a connector which, in a connected state of the cannula system in which the front end region of the hollow body is introduced into the channel of the hose element, receives the front end region of the hose element and the front end region of the hollow body in an inner region of the connector. The connector may exert clamping forces on the front end region of the hose element and clamp the front end region of the hose element between the front end region of the hollow body and the connector. Also provided is a blood pump system including such a cannula system.
A61M 60/122 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
The present application relates to an implantable blood pump (2) for assisting a heart function. The blood pump (2) comprises a heat source (24) and a wall (9, 14) that delimits a flow channel (10). In addition, the blood pump (2) comprises a heat distributor (13) for distributing heat generated by the heat source (24) to a surface of the wall (9, 14). In order to transfer heat from the heat source (24) to the blood conveyed in the flow channel (10), the heat distributor (13) is thermally conductively connected to the heat source (24) and thermally conductively connected to the opposite face of the wall (9, 14) from the flow channel (10).
A disclosed apparatus or method can include or use a non-transluminally implantable blood pump housing, which can be sized and shaped to be implanted at an aortic valve of a human subject, the pump housing can include: a pump housing cross-sectional profile size that is larger than is passable via a blood vessel of the human subject; and a power connection, configured for being electrically connected to an intravascular lead that is sized and shaped to extend from the pump housing through a subclavian artery of the human subject.
A61M 60/135 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel inside a blood vessel, e.g. using grafting
A61M 60/10 - Location thereof with respect to the patient’s body
A61M 60/871 - Energy supply devicesConverters therefor
A surgical intervention is often required in patients with failing Fontan circulation in order to stabilise the patients prior to undergoing a heart transplant. Said type of stabilisation can be carried out using a system described herein comprising a device with two inlet openings and an outlet opening.
The invention relates to a fluid pump for delivering a fluid, particularly blood, comprising: a housing with a fluid inlet and a fluid outlet and a rotor, which is mounted in the housing such that it can rotate about an axis of rotation in order to deliver the fluid from the fluid inlet to the fluid outlet, the rotor being mounted in the housing by means of a mechanical bearing. The fluid pump according to the invention is characterized in that a flow cross-section between the rotor and the housing has a local or partial flow cross-section minimum in the direction of the axis of rotation in the region of the mechanical bearing.
The present invention relates to a drive unit (31) for a diaphragm pump (3), wherein the drive unit comprises a hollow body (33) and a piston (39) which is arranged so as to be movable in the first hollow body along an axis of the hollow body, wherein the piston divides the hollow body into a first chamber (41), which is connectable to the diaphragm pump, and a second chamber (43), which is couplable to a gas reservoir. The second chamber comprises an inlet valve (61) and an outlet valve (65), such that a gas flow is drawn into the chamber via the inlet valve and is forced out of the chamber via the outlet valve.
A control apparatus for an implantable heart pump is provided, which comprises an implantable first control unit, which is electrically connected to the heart pump in a main operating state for controlling operating parameters of the heart pump. The control apparatus also comprises an interface, which is electrically connected to the first control unit and is intended to wirelessly transcutaneously transmit data and/or to wirelessly transcutaneously transmit energy between the first control unit and a further control unit provided for extracorporeal use. The control apparatus also comprises an implantable second control unit, which is electrically connected to the heart pump in an auxiliary operating state for controlling operating parameters of the heart pump, and an implantable switch, which is electrically connected to the first control unit and the second control unit. The switch is set up to change over between the main operating state and the auxiliary operating state.
A61M 60/165 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/183 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices drawing blood from both ventricles, e.g. bi-ventricular assist devices [BiVAD]
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61M 60/411 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor
A61M 60/538 - Regulation using real-time blood pump operational parameter data, e.g. motor current
A61M 60/873 - Energy supply devicesConverters therefor specially adapted for wireless or transcutaneous energy transfer [TET], e.g. inductive charging
A pump is provided for conveying body fluids, in particular blood, wherein the pump has a pump housing and a rotor mounted in the pump housing. The rotor comprises at least one sensor for detecting flow and/or movement parameters. Also provided is a method for operating the pump.
G08B 21/04 - Alarms for ensuring the safety of persons responsive to non-activity, e.g. of elderly persons
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/237 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/523 - Regulation using real-time patient data using blood flow data, e.g. from blood flow transducers
A61M 60/531 - Regulation using real-time patient data using blood pressure data, e.g. from blood pressure sensors
A61M 60/538 - Regulation using real-time blood pump operational parameter data, e.g. motor current
A61M 60/873 - Energy supply devicesConverters therefor specially adapted for wireless or transcutaneous energy transfer [TET], e.g. inductive charging
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
62.
BLOOD PUMP FOR SUPPORTING A CARDIAC FUNCTION, AND METHOD FOR PRODUCING A PUMP HOUSING OF A BLOOD PUMP
The invention relates to a blood pump (2) for supporting a cardiac function, and to a method for producing a pump housing (4) for the blood pump (2). The proposed blood pump (2) comprises an implantable pump housing (4). Furthermore, the blood pump (2) comprises a fibre-optic sensor (28) having an optical fibre (8). The optical fibre (8) is at least partly received in a housing part (12) of the pump housing (4).
The invention relates to a method for producing a bearing arrangement for an implantable blood pump (2), a bearing arrangement and an implantable blood pump (2). In the method according to the invention, a rotor (8) is provided having one or more drive magnets. The rotor (8) has a conveying element (9). In addition, a stator (13) having stator windings is provided. Furthermore, the rotor (8) is arranged in a flow channel (10) formed by an inside wall of the stator (13). A rotor rotation is then driven. While the rotor rotation is driven, a deflection of the rotor (8) is determined. In a further step, the deflection of the rotor (8) is corrected by applying, removing, magnetizing and/or demagnetizing magnetically active material on the stator (13) and/or on the rotor (8) in a non-rotationally symmetrical manner.
The invention relates to a switching unit for connecting a first pneumatic unit and a second pneumatic unit of a pneumatic system together, the switching unit comprising a main body having: a duct structure which extends through the main body; a first and a second inlet for introducing a pressure into the duct structure; a first and a second outlet for discharging at least some of the pressure from the duct structure; and a first and a second valve; wherein the first inlet can be brought into a pressure-exchange connection to the first outlet via a first duct by setting a first switch position of the first valve or to the second outlet via a second duct by setting a second switch position of the first valve, and wherein the second inlet can be brought into a pressure-exchange connection to the first outlet via a third duct by setting a first switch position of the second valve or to the second outlet via a fourth duct by setting a second switch position of the second valve.
F15B 20/00 - Safety arrangements for fluid actuator systemsApplications of safety devices in fluid actuator systemsEmergency measures for fluid actuator systems
F15B 13/044 - Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
F15B 13/08 - Assemblies of units, each for the control of a single servomotor only
F15D 1/12 - Influencing the flow of fluids around bodies of solid material by influencing the boundary layer
A61M 1/10 - Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
The present invention relates to a bearing assembly (1) for mounting a rotor which can be rotated about a rotational axis (6), in particular for a rotary fluid pump or rotary blood pump comprising: a main body (2, 3), a bearing element (4) which can be displaced relative to the main body in the direction of the rotational axis for receiving the rotor, and an actuating device (7, 8, 9) which is connected to the bearing element for displacing the bearing element in the direction of the rotational axis by a predefined travel, wherein the predefined travel is <= 500 micrometres.
F16C 17/08 - Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
F16C 35/02 - Rigid support of bearing unitsHousings, e.g. caps, covers in the case of sliding-contact bearings
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A61M 1/10 - Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
A61M 1/12 - Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps implantable into the body
66.
SYSTEM FOR SECURING A RELEASABLE CONNECTION BETWEEN TWO ELEMENTS
A system, such as a blood pump system, is provided for securing a releasable connection between two elements, in particular between two cables or between two hollow bodies, said system comprising: a first connector and a second connector that is releasably connectable to the first connector, a securing sleeve which, when the first connector is connected to the second connector, is movable, by displacement of the securing sleeve relative to the first connector and relative to the second connector into a securing position in which the securing sleeve completely or at least partially receives the first connector and the second connector, and a latching device with at least one latching element, wherein the latching device is configured to produce a latching connection between the securing sleeve in the securing position and the first connector and/or the second connector connected to the first connector.
The application relates to a heart pump device and an operating method for a heart pump device. The proposed heart pump device comprises an implantable heart pump and a controller for controlling the heart pump. The controller and the heart pump are connected to one another by way of a line with wires. Moreover, the controller is configured to supply the heart pump with electrical power by way of a first of the wires. Furthermore, the controller and the heart pump each comprise a coupling interface. Here, electrical signals for transferring data between the controller and the heart pump are able to be coupled into the first wire or able to be coupled out of the first wire by way of these coupling interfaces.
A closing device is provided for an opening in the heart of a patient, the closing device comprising a ring, which can be fastened to the body tissue of the heart in the region of the opening. The ring has a ring opening. The closing device further comprises a closing element, which can be inserted into the ring opening in order to close the ring opening. Furthermore, the closing element can have at least two integrated sensors. The elements provided in or on the closing element can be connected to and can interact with monitoring and control devices in different ways.
The present invention relates to a pump system for pumping a fluid and a method for operating the pump system. The pump system comprises a first diaphragm fluid pump, a first inlet cannula connected to the first diaphragm fluid pump for supplying a fluid to the first diaphragm fluid pump, a first outlet cannula connected to the first diaphragm fluid pump for discharging the fluid out of the first diaphragm fluid pump, and a first service pump, which is connected via a first pressure line to the first diaphragm fluid pump and is configured to drive the first diaphragm fluid pump via the first pressure line. The pump system further comprises a first inlet flow sensor for detecting a first inlet flow of the fluid in the first inlet cannula and/or a first outlet flow sensor for detecting a first outlet flow of the fluid in the first outlet cannula.
A drive device is provided comprising a working pump, the working pump connected to a membrane fluid pump, and the working pump having a working piston able to oscillate axially between two reversal points for contracting and expanding a working chamber, and a control unit for controlling a movement of the working piston between the two reversal points. The controlled movement of the working piston comprises three temporally successive phases, in a first phase the working piston is accelerated to a speed that is greater than a speed at the end of the first phase, in a second phase the working piston is moved such that a specified speed of the working piston, a specified relative pressure in the working chamber, or a specified force of the working piston is substantially kept constant, and in a third phase the working piston is moved at a negative acceleration.
F04B 43/00 - Machines, pumps, or pumping installations having flexible working members
F04B 49/20 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by changing the driving speed
A61M 60/274 - Positive displacement blood pumps including a displacement member directly acting on the blood the displacement member being flexible, e.g. membranes, diaphragms or bladders the inlet and outlet being the same, e.g. para-aortic counter-pulsation blood pumps
The subject matter of the present invention is a pump having a housing and an upstream inlet and a downstream outlet and a fluid channel which is arranged between said inlet and outlet and has a channel axis. Within the fluid channel, a rotor is arranged which can be rotated by means of a motor. A sensor arrangement is also provided, which can detect an inclination of the axis of rotation of the rotor.
A control device for a heart pump, comprising a device for establishing the end-diastolic filling pressure in a ventricle and a device for associating a delivery rate of the pump, in particular a pump speed or an electric pump capacity, with the established end-diastolic filling pressure. By taking into account the end-diastolic filling pressure, a robust operating option of the heart pump, similar to the physio-logical control, is created.
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
A61M 60/165 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart
A61M 60/531 - Regulation using real-time patient data using blood pressure data, e.g. from blood pressure sensors
A61M 60/554 - Regulation using real-time blood pump operational parameter data, e.g. motor current of blood pressure
The present invention relates to a fluid pump for conveying a fluid, in particular blood, comprising: a housing having a fluid inlet and a fluid outlet; a rotor which is mounted rotatably about an axis of rotation in the housing and has a rotor body and at least one conveying element connected rigidly to the rotor body to convey the fluid from the fluid inlet to the fluid outlet. The rotor is mounted in the housing radially to the axis of rotation by means of a passive magnetic bearing and axially and radially by means of a mechanical and/or hydrodynamic bearing situated on the inlet side or on the outlet side. The fluid pump according to the invention is characterised by a safety bearing which is situated on a side of the rotor opposite the mechanical and/or hydrodynamic bearing and has a first safety bearing component which is connected rigidly to the rotor and a second safety bearing component which is connected rigidly to the housing. During operation of the fluid pump, an axial and radial distance between the first and second safety bearing components is greater than a radial minimum distance between the rotor and the housing. The safety bearing is designed to limit deflection of the rotor in the radial direction inside the housing.
The invention relates to a component for conducting a fluid having a sensor, wherein the component comprises an inner and an outer wall, wherein the inner wall is designed to conduct the fluid, the outer wall closes off the component from the outside and a wall region is formed between the inner and the outer wall. The component according to the invention is characterized in that the sensor has an electromechanical sensor element and is arranged in the wall region on the inner wall, wherein the sensor is designed to measure, by means of the sensor element, a degree of a deformation of the inner wall in the region of the sensor and to output same as an electrical signal, the length and/or width of the electromechanical sensor element being < 50 μm.
The invention relates to a cannula system (500) for puncturing the heart, comprising a cannula (502) and a trocar (506). The cannula comprises a cannula shaft with a heart-side inlet and a pump-side outlet. The trocar has a trocar shaft which can be inserted into the lumen of the cannula and which comprises a puncturing tip, wherein the puncturing tip can completely cover the inlet opening of the cannula.
The object of the application is a blood pump having a housing and a rotor arranged in the housing. The rotor has a spindle-shaped design. Furthermore, the housing follows at least in parts the spindle-shaped widening of the rotor. In this way, a particularly efficient blood pump of reduced dimensions can be realized.
The invention relates to a drive device for a diaphragm fluid pump, comprising: a service pump, the service pump being connected to the diaphragm fluid pump by means of a pressure line in order to drive the diaphragm fluid pump, and the service pump having a hollow cylinder and a working piston, which can oscillate axially in the hollow cylinder between two reversal points in order to reduce and enlarge a working volume in the service pump, which working volume is in a pressure exchange connection with the pressure line; and a control unit for controlling movement of the working piston between the reversal points, characterized in that the controlled movement of the working piston comprises three successive phases, in a first phase the working piston being accelerated to a velocity that is greater than a velocity at the end of the first phase, in a second phase the working piston being moved in such a way that a predefined velocity of the working piston, a predefined relative pressure in the working volume or a predefined force of the working piston is held largely constant, and in a third phase the working piston being moved with a negative acceleration.
F04B 43/00 - Machines, pumps, or pumping installations having flexible working members
F04B 49/20 - Control of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for in, or of interest apart from, groups by changing the driving speed
78.
Cannula, cannula system, heart pump system and method for relieving the volume of a heart
A cannula for relieving the left side of the heart is provided, the cannula having a cannula shaft comprising a heart-side inlet and a pump-side outlet. A lumen extends between the inlet and the outlet, and a suture ring for connecting the cannula to a left atrium is arranged on an outer side of the cannula shaft. The outlet is configured such that the outlet can be connected to a pump and the length of the cannula shaft between the suture ring and the outlet is such that the cannula shaft can be guided outwards through an intercostal space.
A device for feeding a line through the skin of a patient, wherein the line contains a photodynamic substance that releases highly reactive oxygen derivatives when irradiated. Thus, disinfection/sterilization can be achieved in the region of a feed-through both on the outside of the skin and in the feed-through region by irradiating the feed-through.
Methods and apparatuses for determining operational parameters of a blood pump comprising a rotor which transports the blood are provided. The change in the behaviour of at least one first and one second operational parameter, independently from each other, of the pump, is determined. A determination of the flow through the pump and/or the difference in pressure across the pump and/or the viscosity of the blood takes into account the determined change in behaviour of the at least two operational parameters. A modelling for a dynamic model of the known quantities may be carried out and an estimation method using a Kalman filter may be used.
A61M 60/419 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being permanent magnetic, e.g. from a rotating magnetic coupling between driving and driven magnets
F04D 13/06 - Units comprising pumps and their driving means the pump being electrically driven
G01L 13/00 - Devices or apparatus for measuring differences of two or more fluid pressure values
G01N 11/02 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by measuring flow of the material
H02P 6/182 - Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings
The invention relates to a cannula system (2) for guiding a liquid, which system comprises: a cannula (7) having a hose element (9) having a front end region (11) and a rear end region, wherein a channel (10) extends from the front end region (11) to the back end region, a hollow body (8) having a front end region (15), and a connector (48) which, in a connected state of the cannula system in which the front end region (15) of the hollow body (8) is introduced into the channel (10) of the hose element (9), receives the front end region (11) of the hose element (9) and the front end region (15) of the hollow body (8) in an inner region (51) of the connector (48). In the connected state, the connector (48) exerts clamping forces on the front end region (11) of the hose element (9) and clamps the front end region (11) of the hose element (9) between the front end region (15) of the hollow body (8) and the connector (48). The invention further relates to a blood pump system (1) having a blood pump (3) and having such a cannula system (2).
The invention relates to a blood pump, which has a housing (1) having an inlet (2) and an outlet (3) and a rotor (4) for conveying fluid from the inlet (2) to the outlet (3). The rotor (4) comprises a central body (41), above which the rotor (4) is mounted rotatably about an axis of rotation (5) of the rotor (4), a first annular body (42) which is arranged on an inlet side of the rotor (4) and is integrally connected to the central body (41), and conveying elements (43) which extend on an outlet side of the first annular body (42) and substantially perpendicularly to the axis of rotation (5) and are integrally connected directly to the first annular body (42) and integrally connected directly to the central body (41).
A cannula assembly is provided, the cannula assembly comprising a cannula, in particular a graft, for forming a flow channel for bodily fluids, in particular for blood, and a protective element for the cannula, wherein the protective element defines a channel for the cannula, wherein the cannula runs through the channel of the protective element at least in sections, wherein the protective element comprises a plurality of segments, wherein the segments are arranged next to one another in a sequence and wherein each segment defines a sub-section of the channel of the protective element. A blood pump assembly and a method for using the cannula assembly and the blood pump assembly are also provided.
The invention relates to an inlet cannula for supplying a fluid from a human vessel to a fluid pump, wherein the inlet cannula is formed as a hollow structure suitable for conveying the fluid and a surface of the inlet cannula has, successively in a flow direction of the fluid, an ingrowth zone and an inlet zone, wherein the ingrowth zone and the inlet zone are separated from each other by a tear-off edge extending in the circumferential direction of the inlet cannula, wherein a first tangent to the inlet zone on the tear-off edge has an angle to a longitudinal axis of the inlet cannula of > 0° and < 180°, and wherein a surface roughness in the ingrowth zone is greater than a surface roughness in the inlet zone, and wherein along the flow direction the ingrowth zone is concave, convex or not curved and the inlet zone is convexly curved, wherein the inlet zone is convexly curved with a radius of curvature of 2 to 20 mm, or wherein the ingrowth zone is convexly curved and the inlet zone is not curved, and wherein the tear-off edge forms a curvature transition between the ingrowth zone and the inlet zone.
A holding device for a suture ring is provided. The holding device may include a retainer in which a suture ring can be releasably fixed, in particular clamped, and a handle which is connected to the retainer and which has an actuating mechanism for fixing and/or releasing a connection between the retainer and the suture ring. By means of the holding device, a suture ring can be fixed in the retainer such that a tubular part and/or object can be pushed into the suture ring without exerting forces on the tissue to which the suture ring is connected.
A method may be provided for the operation of a pump device, which comprises at least one pump as well as a suction element which is connected to the at least one pump and which has a suction opening positioned in a cavity of a body of a patient that sucks a fluid by way of producing a reduced pressure in the suction element, wherein an acceleration is measured and monitored during the operation of the pump device, wherein the reduced pressure in the suction element is reduced at least for a limited reaction time period, given the occurrence of an acceleration variable which lies above a fixed threshold valve. A correspondingly configured pump device may be provided.
A61M 1/10 - Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
A61M 1/12 - Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps implantable into the body
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
87.
PUMP HAVING A ROTOR SENSOR FOR DETECTING PHYSIOLOGICAL PARAMETERS, FLOW PARAMETERS, AND MOVEMENT PARAMETERS
The invention relates to a pump (3) for conveying body fluids, in particular blood, wherein the pump (3) has a pump housing (12) and a rotor (9) mounted in the pump housing (12). The rotor (9) comprises at least one sensor (15, 16, 17) for detecting flow and/or movement parameters. The invention further relates to a method for operating the pump (3).
The present application relates to an outlet graft for a blood pump as well as to a system comprising a blood pump and an outlet graft that is connected to an outlet of the blood pump. The outlet graft includes a first end opposite a second end such that a longitudinal axis is formed between the first and second ends. The second end is connectable to a blood vessel and a lumen with a closed cover. A first strip included in the cover extends parallel to the longitudinal axis and is made of a material that is of a higher contrast under x-rays than the cover.
A system is provided for connecting a blood pump to a heart, the system comprising: a blood pump for conveying blood, wherein the blood pump comprises a first tubular portion and a second tubular portion, and between the first and the second tubular portion, there is a flange-shaped portion; and comprising a connector having a tubular connector portion extending in an axial direction between a distal end and a proximal end having a lumen for receiving the first tubular portion of the blood pump, and having a flange-shaped connector portion arranged at the distal end for fastening the connector to an organ.
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
A blood pump may be provided that includes an inlet, an outlet and a rotor for delivering fluid from the inlet to the outlet, wherein the rotor is suspended within the blood pump by radial passive magnetic forces and axially is preloaded in one direction at least by way of passive magnetic forces so that, during a fluid-delivering rotation of the rotor, the axial thrust of the rotor acts counter to the magnetic attraction acting axially in the direction of the outlet.
Methods are provided for controlling the speed of a pump based on a valve state index and/or for deriving a valve state from time-series signal representing a pressure difference or a flow rate. The methods may be employed in blood pump systems or in blood pump control systems.
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
A61M 60/422 - Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
A61M 60/562 - Electronic control means, e.g. for feedback regulation for making blood flow pulsatile in blood pumps that do not intrinsically create pulsatile flow
92.
Rotary blood pump for regulating a hemodynamic parameter successively to different target values
A blood pump for supporting the heart may be provided that includes: a rotor with delivery elements; a rotor drive; a pressure sensor; and a regulating device that regulates a pressure or a hemodynamic parameter by means of control of the rotor drive. The pressure and/or the hemodynamic parameter may be determined by means of one or a plurality of hemodynamic sensors and/or from operating parameters of the pump. The regulating device may be suitable for regulating a hemodynamic parameter successively, such as periodically, to different target values. Using such regulation, the blood pump may be operated in an optimized manner, and operation of the blood pump may be varied in a targeted and patient-protective manner in order to attain certain goals.
A method and a device for the measurement of one or more fluid-mechanically effective parameters of a fluid, with a fluid pump which comprises a delivery element which is mounted in a magnet bearing, and the delivery element of the fluid pump is excited into an oscillation by way of an excitation device, wherein the oscillation parameters as well as, as the case may be, the oscillation behaviour is measured, and parameters of the fluid are determined from this.
G01N 11/16 - Investigating flow properties of materials, e.g. viscosity or plasticityAnalysing materials by determining flow properties by moving a body within the material by measuring damping effect upon oscillatory body
A61M 1/10 - Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
A61M 1/12 - Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps implantable into the body
94.
HEART PUMP DEVICE AND OPERATING METHOD FOR A HEART PUMP DEVICE
The application relates to a heart pump device (8) and an operating method for a heart pump device (8). The proposed heart pump device (8) comprises an implantable heart pump (1) and a controller (6) for controlling the heart pump (1). The controller (6) and the heart pump (1) are connected to one another by way of a line with wires (21, 22, 23). Moreover, the controller (6) is configured to supply the heart pump (1) with electrical power via a first of the wires (21). Furthermore, the controller (6) and the heart pump (1) each have a coupling interface (13, 16). Here, electrical signals for transferring data between the controller (6) and the heart pump (1) are able to be coupled into the first wire (21) or able to be coupled out of the first wire (21) by way of these coupling interfaces (13, 16).
The present application relates to a blood pump, preferably for assisting a heart, wherein the blood pump comprises a housing with a distal inlet, a proximal inlet, and a mandrel arranged between the inlet and the outlet. A rotor with blading is arranged on the mandrel coaxially and rotatably. The rotor is mounted on the mandrel magnetically in an axial direction. In one embodiment the outlet is situated proximally to a proximal end of the blading of the rotor.
A connecting device is provided for connecting a pipe or tube-shaped element to the heart or a blood vessel of a patient, comprising a suture ring that has an opening, which can be closed by means of a closure element and through which said pipe or tube-shaped element is guided in the axial direction. The closure element is secured to the suture ring by means of at least one elastic securing element. A radially-expandable sealing element can also be provided in order to establish a sealing placement of the closure element against the suture ring.
A61M 60/148 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
A61M 60/178 - Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient’s body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
A61M 60/861 - Connections or anchorings for connecting or anchoring pumps or pumping devices to parts of the patient’s body
A61B 17/12 - Surgical instruments, devices or methods for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels or umbilical cord
A61M 60/216 - Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
A61B 17/22 - Implements for squeezing-off ulcers or the like on inner organs of the bodyImplements for scraping-out cavities of body organs, e.g. bonesSurgical instruments, devices or methods for invasive removal or destruction of calculus using mechanical vibrationsSurgical instruments, devices or methods for removing obstructions in blood vessels, not otherwise provided for
97.
DEVICE AND METHOD FOR CONNECTING TWO BLOOD VESSEL SECTIONS
A surgical intervention is often required in patients with failing Fontan circulation in order to stabilise the patients prior to undergoing a heart transplant. According to the invention, said type of stabilisation can be carried out using a system comprising a device with two inlet openings and an outlet opening.
The invention relates to a closing device (1) for an opening (5) in the heart of a patient, comprising a ring (3, 3a, 3b), which can be fastened to the body tissue of the heart in the region of the opening (5) and which has a ring opening, and a closing element (2), which can be inserted into the ring opening in order to close the ring opening. Furthermore, the closing element (2) has at least two integrated sensors (6, 10, 11, 16, 17, 18). The elements provided in or on the closing element (2) can be connected to and can interact with monitoring and control devices in different ways.
A61B 17/00 - Surgical instruments, devices or methods
A61B 90/00 - Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups , e.g. for luxation treatment or for protecting wound edges
A heart pump device may be provided with an implantable heart pump, which has at least one sensor, wherein at least one of the sensors is a sensor for a rotor of the heart pump, and with a control device, which is connected to the heart pump by means of a transcutaneous line, characterized by a signal processing device, which on the one hand is connected by means of the transcutaneous line to the control device, and which on the other hand is connected to at least one sensor of the heart pump and transmits signals of at least one sensor via the transcutaneous line to the control unit. The signal processing device may be for a pre-processing of the sensor data for more efficient transmission via the transcutaneous line.
An electrical arrangement with an implantable cable element may be provided which comprises a strain relief element which is arranged centrically in the cross section, as well as a group of conductors insulated to one another, said group being stranded around the strain relief element, and a common shielding element surrounding the electrical conductors, as well as a fluid-tight cable sheath. The implantable cable element may have a symmetrical construction.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A61M 1/10 - Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps
A61N 1/375 - Constructional arrangements, e.g. casings
H01B 7/282 - Preventing penetration of fluid into conductor or cable
H01B 7/36 - Insulated conductors or cables characterised by their form with distinguishing or length marks
H01B 17/12 - Special features of strain insulators
H02G 3/22 - Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
A61M 39/00 - Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
A61M 1/12 - Blood pumps; Artificial hearts; Devices for mechanical circulatory assistance, e.g. intra-aortic balloon pumps implantable into the body
A61N 1/05 - Electrodes for implantation or insertion into the body, e.g. heart electrode
H01B 7/04 - Flexible cables, conductors, or cords, e.g. trailing cables
