Goods & Services

Medical device, namely, a cardiac ablation generator for the delivery of pulsed field ablation through compatible catheters.

Goods & Services

Medical device, namely, a cardiac ablation generator for the delivery of pulsed field ablation through compatible catheters.

Goods & Services

(1) Medical device, namely, a cardiac ablation generator for the delivery of pulsed field ablation through compatible catheters.

Abstract

A system and method for assessing contact between a medical device and tissue may comprise an electronic control unit (ECU) configured to be coupled to a medical device, the medical device comprising a first electrode and a second electrode. The ECU may be further configured to select the first electrode as an electrical source and the second electrode as an electrical sink, to cause an electrical signal to be driven between the source and sink, to detect respective electric potentials on the first electrode and the second electrode while the electrical signal is driven, and to determine an impedance respective of one of the first electrode and the second electrode according to both of the respective electric potentials.

IPC Classes  ?

• A61B 5/24 - Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 5/0538 - Measuring electrical impedance or conductance of a portion of the body invasively, e.g. using a catheter
• A61B 5/06 - Devices, other than using radiation, for detecting or locating foreign bodies
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 18/14 - Probes or electrodes therefor
• 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

Abstract

Cardiac ablation devices and systems are disclosed. A system in accordance with the present disclosure comprises an ablation generator, an electronic control unit (ECU), a control system, and a catheter. The catheter comprises at least one ablation electrode, a catheter shaft including a fluid lumen, and a plurality of thermal sensors. The ECU is configured to receive temperature measurement data from the plurality of thermal sensors, determine a power rate delivery value based on the temperature measurement data, and output the power rate delivery value. The control system is configured to receive the power rate delivery value and control energy delivery of the ablation generator based at least in part on the power rate delivery value.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 18/02 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
• A61B 18/06 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating caused by chemical reaction
• A61B 18/08 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by means of electrically-heated probes
• A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
• A61B 18/24 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibreHand-pieces therefor with a catheter
• A61B 34/20 - Surgical navigation systemsDevices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis

Abstract

Catheter systems include direction-sensitive, multi-polar tip electrode assemblies for electroporation-mediated therapy, electroporation-induced primary necrosis therapy and electric field-induced apoptosis therapy, including configurations for producing narrow, linear lesions as well as distributed, wide area lesions. A monitoring system for electroporation therapy includes a mechanism for delivering electrochromic dyes to a tissue site as well as a fiber optic arrangement to optically monitor the progress of the therapy as well as to confirm success post-therapy. A fiber optic temperature sensing electrode catheter includes a tip electrode having a cavity whose inner surface is impregnated or coated with thermochromic/thermotropic material that changes color with changes in temperature. An optic fiber/detector arrangement monitors the thermochromic or thermotropic materials, acquiring a light signal and generating an output signal indicative of the spectrum of the light signal. An analyzer determines an electrode temperature based on the detector output and predetermined spectrum versus temperature calibration data.

IPC Classes  ?

• A61N 1/32 - Applying electric currents by contact electrodes alternating or intermittent currents
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 18/14 - Probes or electrodes therefor

Abstract

Catheter systems include direction-sensitive, multi-polar tip electrode assemblies for electroporation-mediated therapy, electroporation-induced primary necrosis therapy and electric field-induced apoptosis therapy, including configurations for producing narrow, linear lesions as well as distributed, wide area lesions. A monitoring system for electroporation therapy includes a mechanism for delivering electrochromic dyes to a tissue site as well as a fiber optic arrangement to optically monitor the progress of the therapy as well as to confirm success post-therapy. A fiber optic temperature sensing electrode catheter includes a tip electrode having a cavity whose inner surface is impregnated or coated with thermochromic/thermotropic material that changes color with changes in temperature. An optic fiber/detector arrangement monitors the thermochromic or thermotropic materials, acquiring a light signal and generating an output signal indicative of the spectrum of the light signal. An analyzer determines an electrode temperature based on the detector output and predetermined spectrum versus temperature calibration data.

IPC Classes  ?

• A61N 1/32 - Applying electric currents by contact electrodes alternating or intermittent currents
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 18/14 - Probes or electrodes therefor

Abstract

A catheter and patch electrode system is provided for use with an ablation generator, having a 4-wire interface for improved impedance measurement. The 4-wire interface includes a pair of source connectors across which an excitation signal is produced and a pair of sense connector wires across which the impedance is measured. The system further includes a cable that connects the generator to a catheter that includes a shaft with an ablation tip electrode disposed at a distal end. The impedance sensor circuit produces an excitation signal across the source connectors, which is then carried to the catheter by the cable, then to the tip electrode, travels through the complex load (tissue volume), and returns to the generator via a patch electrode. The impedance is measured by observing the voltage drop across the sense connectors caused by the excitation signal.

IPC Classes  ?

• A61B 18/12 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 18/14 - Probes or electrodes therefor
• A61B 18/16 - Indifferent or passive electrodes for grounding

Abstract

The invention relates to ablation catheter electrodes that solve in part the problem of tissue charring during radiofrequency ablation. The electrode assemblies of the invention include passageways that lead from the inner lumen of the assemblies to the surface of the assemblies, wherein the passageways have a smooth conjunction with the outer surface. These smooth conjunctions comprise rounded edges or are chamfered. In the case of rounded edges, the rounded edges can have fixed radii of about 0.002″ to about 0.008″.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Goods & Services

Medical devices, namely, catheters and catheter interface modules.

Goods & Services

(1) Medical devices, namely, catheters and catheter interface modules.

Goods & Services

Medical devices, namely, catheters with embedded operating system software.

Abstract

A system and method for assessing contact between a medical device and tissue may comprise an electronic control unit (ECU) configured to be coupled to a medical device, the medical device comprising a first electrode and a second electrode. The ECU may be further configured to select the first electrode as an electrical source and the second electrode as an electrical sink, to cause an electrical signal to be driven between the source and sink, to detect respective electric potentials on the first electrode and the second electrode while the electrical signal is driven, and to determine an impedance respective of one of the first electrode and the second electrode according to both of the respective electric potentials.

IPC Classes  ?

• A61B 5/06 - Devices, other than using radiation, for detecting or locating foreign bodies
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 5/0538 - Measuring electrical impedance or conductance of a portion of the body invasively, e.g. using a catheter
• A61B 5/24 - Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
• A61B 18/14 - Probes or electrodes therefor
• 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
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

Ablation electrode assemblies include an inner core member and an outer shell surrounding the inner core member. The inner core member and the outer shell define a space or separation region therebetween. The inner core member is constructed from a thermally insulative material having a reduced thermal conductivity. In an embodiment, the space is a sealed or evacuated region. In other embodiments, irrigation fluid flows within the space. The ablation electrode assembly further includes at least one thermal sensor in some embodiments. Methods for providing irrigation fluid during cardiac ablation of targeted tissue are disclosed that include calculating the energy delivered to irrigation fluid as it flows within the ablation electrode assembly through temperature measurement of the irrigation fluid. Pulsatile flow of irrigation fluid can be utilized in some embodiments of the disclosure.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor

Abstract

A medical device is provided comprising a shaft comprising a first segment and a second segment. The first segment is configured to buckle upon application of a first critical force. The second segment includes an outer surface and an inner surface and is configured to buckle upon application of a second critical force. The second critical force is lower than the first critical force. The medical device further comprises a coil disposed radially inwardly of the inner surface of the second segment.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61M 25/00 - CathetersHollow probes
• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• A61M 25/09 - Guide wires

Abstract

A system and method for assessing effective delivery of ablation therapy to a tissue in a body is provided. A three-dimensional anatomical map of the tissue is generated and displayed with the map defining a corresponding volume. An index is generated corresponding to a location within the volume with the index indicative of a state of ablation therapy at the location. The index may be derived from one or more factors such as the duration an ablation electrode is present at the location, the amount of energy provided, the degree of electrical coupling between an ablation electrode and the tissue at the location and temperature. A visual characteristic (e.g., color intensity) of a portion of the anatomical map corresponding to the location is then altered responsive to the index.

IPC Classes  ?

• A61B 18/12 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 5/06 - Devices, other than using radiation, for detecting or locating foreign bodies
• A61B 18/14 - Probes or electrodes therefor
• 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
• A61B 5/01 - Measuring temperature of body parts
• A61B 5/0538 - Measuring electrical impedance or conductance of a portion of the body invasively, e.g. using a catheter
• A61B 17/00 - Surgical instruments, devices or methods
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 18/02 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
• A61N 7/02 - Localised ultrasound hyperthermia

Goods & Services

Remote training services in the operation and use of electrophysiology equipment; clinical support services in the nature of instruction, namely, remote commentary and guidance on the use of electrophysiology equipment. Technical support services, namely, remote delivery of software updates and remote real-time troubleshooting support for electrophysiology equipment.

Goods & Services

(1) Remote training services in the operation and use of electrophysiology equipment; clinical support services in the nature of instruction, namely, remote commentary and guidance on the use of electrophysiology equipment. (2) Technical support services, namely, remote delivery of software updates and remote real-time troubleshooting support for electrophysiology equipment.

Goods & Services

Technical support services, namely, remote delivery of software updates and remote real-time troubleshooting support for electrophysiology equipment

Goods & Services

Remote training services in the operation and use of electrophysiology equipment; clinical support services in the nature of instruction, namely, remote commentary and guidance on the use of electrophysiology equipment

Goods & Services

(1) Providing information via an Internet website portal for use by healthcare personnel in the field of electrophysiology medicine, namely, case images, videos, and compiled analytics from external capital equipment, electronic medical records, and patient health records available via a cloud-based repository

Goods & Services

Providing an Internet website portal for use by healthcare personnel in the field of electrophysiology medicine, namely, case images, videos, and compiled analytics from external capital equipment, electronic medical records, and patient health records available via a cloud-based repository.

Goods & Services

Providing an Internet website portal featuring information for use by healthcare personnel in the field of electrophysiology medicine, namely, case images, videos, and compiled analytics from external capital equipment, electronic medical records, and patient health records available via a cloud-based repository

Goods & Services

Computer hardware and software, namely algorithms for use in the field of electrophysiology for the treatment of cardiac arrhythmia.

Goods & Services

Computer hardware and downloadable software featuring algorithms for the treatment of cardiac arrhythmia using pulsed field ablation (PFA) catheters and pulse generators, all in the field of electrophysiology

Abstract

A method of constructing a bounding box comprises: acquiring a set of sensed data points; adding, for each sensed data point, at least one calculated data point; and defining a bounding box containing the sensed and calculated data points. A method of identifying voxels in a voxel grid corresponding to a plurality of data points comprises: calculating, for each data point, a distance between it and each voxel; creating a subset of voxels comprising voxels having a distance from one data point that is less than a predetermined distance; creating another subset comprising those voxels that neighbor a voxel in the first subset; computing, for each voxel in the second subset, a distance between it and each voxel in the first subset; and identifying each voxel in the first subset that is a distance away from each voxel in the second subset that exceeds a predetermined distance.

IPC Classes  ?

• G06T 17/10 - Volume description, e.g. cylinders, cubes or using CSG [Constructive Solid Geometry]
• G06T 17/00 - 3D modelling for computer graphics
• G06T 11/60 - Editing figures and textCombining figures or text
• G06T 15/08 - Volume rendering

Abstract

In various embodiments, a catheter comprising an expandable electrode assembly or basket is provided. In specific embodiments, the basket is particularly useful for mapping electrical activity at one or more locations within the heart. The basket can comprise a plurality of bendable or deflectable arms. At least one of the arms may have varied flexibility over its length in the form of one or more discontinuities of stiffness or flexibility at an elbow region or other variances in flexibility over the arm's length. Such variance in flexibility may allow the arm to assume a different bent configuration or respond to external factors more positively than possible with an arm having a static or near static flexibility or stiffness over its length.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 5/287 - Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]

Abstract

Catheter curve shape struts for steerable medical devices such as catheters are disclosed. These struts may not only help shape a steerable portion of a medical device (e.g., a distal portion of a catheter), but also may help to return a steered or deflected portion of the medical device to an uncurved configuration when it is no longer desirable or necessary to steer or deflect the medical device. These struts may include first and second pluralities of complementary, staggered cutout regions. When used in a catheter that is deployed via an introducer, at least some configurations of the catheter curve shape strut can enable the catheter to be rotated about its longitudinal axis, even when the distal deflectable section is in a curved configuration and inside of the introducer.

IPC Classes  ?

• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters

Abstract

The invention relates to ablation catheter electrodes that solve in part the problem of tissue charring during radiofrequency ablation. The electrode assemblies of the invention include passageways that lead from the inner lumen of the assemblies to the surface of the assemblies, wherein the passageways have a smooth conjunction with the outer surface. These smooth conjunctions comprise rounded edges or are chamfered. In the case of rounded edges, the rounded edges can have fixed radii of about 0.002″ to about 0.008″.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

A family of catheter electrode assemblies includes a flexible circuit having a plurality of electrical traces and a substrate; a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the electrode. A non-contact electrode mapping catheter includes an outer tubing having a longitudinal axis, a deployment member, and a plurality of splines, at least one of the plurality of splines comprising a flexible circuit including a plurality of electrical traces and a substrate, a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the ring electrode. A method of constructing the family of catheter electrode assemblies is also provided.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 5/287 - Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]

Abstract

An irrigated ablation electrode assembly comprises a distal member, a first manifold, and a second manifold. The distal member includes an outer surface; an inner surface; and at least one radially extending passageway that extends from the inner surface of the distal member to the outer surface of the distal member. The first manifold includes an outer surface, an inner cavity, and at least one radially extending passageway that extends from the inner cavity to the outer surface of the first manifold. The second manifold includes an outer surface, an inner surface, and at least one radially extending passageway that extends from the inner surface of the second manifold to the outer surface of the second manifold. Other irrigated ablation electrode assemblies are also presented.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 18/02 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques

Abstract

Catheter systems include direction-sensitive, multi-polar tip electrode assemblies for electroporation-mediated therapy, electroporation-induced primary necrosis therapy and electric field-induced apoptosis therapy, including configurations for producing narrow, linear lesions as well as distributed, wide area lesions. A monitoring system for electroporation therapy includes a mechanism for delivering electrochromic dyes to a tissue site as well as a fiber optic arrangement to optically monitor the progress of the therapy as well as to confirm success post-therapy. A fiber optic temperature sensing electrode catheter includes a tip electrode having a cavity whose inner surface is impregnated or coated with thermochromic/thermotropic material that changes color with changes in temperature. An optic fiber/detector arrangement monitors the thermochromic or thermotropic materials, acquiring a light signal and generating an output signal indicative of the spectrum of the light signal. An analyzer determines an electrode temperature based on the detector output and predetermined spectrum versus temperature calibration data.

IPC Classes  ?

• A61N 1/32 - Applying electric currents by contact electrodes alternating or intermittent currents
• A61B 18/14 - Probes or electrodes therefor

Goods & Services

(1) Medical catheters, pulse generators, irrigation pumps and surface electrode patches, all in the field of electrophysiology.

Goods & Services

Medical catheters, generators, pumps, cables, and surface electrode patches, all in the field of electrophysiology.

Goods & Services

(1) Medical catheters, pulse generators, irrigation pumps, and surface electrode patches, all in the field of electrophysiology.

Goods & Services

Medical catheters, generators, pumps, cables, and surface electrode patches, all in the field of electrophysiology.

Goods & Services

Medical apparatus and instruments in the nature of catheters, pulse generators, irrigation pumps, and surface electrode patches, all in the field of electrophysiology

Goods & Services

Medical apparatus and instruments in the nature of catheters, pulse generators, irrigation pumps, and surface electrode patches, all in the field of electrophysiology

Abstract

A method of manufacturing a catheter shaft includes the steps of forming an inner layer of a first polymeric material, forming a plait matrix layer including a second polymeric material about the inner layer, and forming an outer layer of a third polymeric material about the plait matrix layer. The plait matrix layer includes a braided wire mesh partially or fully embedded within the second polymeric material, which is different from at least one of the first polymeric material forming the inner layer and the third polymeric material forming the outer layer. The second polymeric material has a higher yield strain and/or a lower hardness than at least the first polymeric material, and preferably both the first and the third polymeric materials. The first polymeric material and the third polymeric material may be different or the same. The catheter shaft may be formed by stepwise extrusion, co-extrusion, and/or reflow processes.

IPC Classes  ?

• A61M 25/00 - CathetersHollow probes
• B29C 48/151 - Coating hollow articles
• B29C 61/00 - Shaping by liberation of internal stressesMaking preforms having internal stressesApparatus therefor
• B29D 23/00 - Producing tubular articles
• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• B29C 63/00 - Lining or sheathing, i.e. applying preformed layers or sheathings of plasticsApparatus therefor
• B29L 31/00 - Other particular articles
• B29K 27/18 - PTFE, i.e. polytetrafluorethene
• B29K 105/16 - Fillers

Abstract

Systems for detecting when catheter electrodes enter into and exit from an introducer are disclosed. In one form, a system detects a relative position of a catheter (comprising a marker band and an electrode) and an introducer (comprising a proximity sensor adapted to sense the marker band), while the catheter and introducer are in a human body. The system may comprise an electronic control unit to analyze signals from the catheter and/or the introducer, to determine whether the catheter electrode is within the introducer; and to disregard data collected from the electrode when that electrode is in the introducer. The sensor may be on the catheter and the sensed element may be on the introducer. The sensed element may comprise one or several marker bands. A marker band may be applied during the manufacture of a medical device or during its use and is any element capable of electromagnetic detection.

IPC Classes  ?

• A61B 34/20 - Surgical navigation systemsDevices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• A61B 5/06 - Devices, other than using radiation, for detecting or locating foreign bodies
• 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
• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• A61B 18/14 - Probes or electrodes therefor
• A61B 17/00 - Surgical instruments, devices or methods
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61M 25/00 - CathetersHollow probes

Abstract

A system for providing irrigation fluid during ablation of tissue includes a catheter, an electrode assembly, at least one thermal sensor adapted to be connected to the catheter, and a control system. The electrode assembly is adapted to be connected to an ablation generator. The thermal sensor is adapted to be operatively connected to an electronic control unit (ECU). The ECU receives as an input temperature measurement data from the thermal sensor; determines a power delivery rate value for the ablation generator responsive to the temperature measurement data; and outputs the power delivery rate value. The control system also delivers irrigation fluid to the irrigated catheter at a first flow rate in a first time period and at a second flow rate in a second time period that is temporally after the first time period. The second flow rate is at least half of the first flow rate.

IPC Classes  ?

• A61B 18/12 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
• A61B 18/14 - Probes or electrodes therefor
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 18/02 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
• A61B 18/06 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating caused by chemical reaction
• A61B 18/08 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by means of electrically-heated probes
• A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
• A61B 18/24 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibreHand-pieces therefor with a catheter
• A61B 34/20 - Surgical navigation systemsDevices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis

Goods & Services

(1) Administering medical service programs, namely, negotiating contracts with providers of medical services, to enable participant members to obtain medical products and services related to electrophysiology

Goods & Services

Administering medical service programs, namely, negotiating contracts with providers of medical services, to enable participant members to obtain medical products and services related to electrophysiology.

Goods & Services

Administering medical service programs, namely, negotiating contracts with providers of medical services, to enable participant members to obtain medical products and services related to electrophysiology

Abstract

An irrigated ablation catheter includes a shaft and an electrode assembly affixed to a distal end of the shaft. The distal electrode assembly includes a manifold and an ablation electrode affixed together and extending along a center axis. The electrode has a distal irrigation passageway extending therethrough to an opening at a distal tip of the electrode. The opening of the irrigation passageway is offset in distance from the center axis, and allows a thermal sensor such as a thermocouple to be located in a sensor cavity in the electrode on or near the center axis. One variation involves providing a pair of distal irrigation passageways through the electrode where both of the openings of the passageways are offset from the center axis. The thermal sensor in this variation is located in the sensor cavity substantially on the center axis.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61M 25/00 - CathetersHollow probes
• A61B 17/00 - Surgical instruments, devices or methods
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

A method of tracking a position of a catheter within a patient includes securing a navigational reference at a reference location within the patient, defining the reference location as the origin of a coordinate system, determining a location of an electrode moving within the patient relative to that coordinate system, monitoring for a dislodgement of the navigational reference from the initial reference location, for example by measuring the navigational reference relative to a far field reference outside the patient's body, and generating a signal indicating that the navigational reference has dislodged from the reference location. Upon dislodgement, a user may be provided with guidance to help reposition and secure the navigational reference to the initial reference location, or the navigational reference may be automatically repositioned and secured to the initial reference location. Alternatively, a reference adjustment may be calculated to compensate for the changed reference point/origin.

IPC Classes  ?

• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 5/283 - Invasive
• A61B 34/20 - Surgical navigation systemsDevices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• A61B 5/06 - Devices, other than using radiation, for detecting or locating foreign bodies

Abstract

Catheter systems include direction-sensitive, multi-polar tip electrode assemblies for electroporation-mediated therapy, electroporation-induced primary necrosis therapy and electric field-induced apoptosis therapy, including configurations for producing narrow, linear lesions as well as distributed, wide area lesions. A monitoring system for electroporation therapy includes a mechanism for delivering electrochromic dyes to a tissue site as well as a fiber optic arrangement to optically monitor the progress of the therapy as well as to confirm success post-therapy. A fiber optic temperature sensing electrode catheter includes a tip electrode having a cavity whose inner surface is impregnated or coated with thermochromic/thermotropic material that changes color with changes in temperature. An optic fiber/detector arrangement monitors the thermochromic or thermotropic materials, acquiring a light signal and generating an output signal indicative of the spectrum of the light signal. An analyzer determines an electrode temperature based on the detector output and predetermined spectrum versus temperature calibration data.

IPC Classes  ?

• A61B 18/10 - Power sources therefor
• A61N 1/32 - Applying electric currents by contact electrodes alternating or intermittent currents
• A61B 18/14 - Probes or electrodes therefor
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Goods & Services

Electrophysiology systems sold with software for electroanatomical vizualisation as an integral component.

Abstract

A catheter and patch electrode system is provided for use with an apparatus, such as an ablation generator, having a 4-wire interface for improved impedance measurement. The 4-wire interface includes a pair of source connectors across which an excitation signal is produced and a pair of sense connector wires across which the impedance is measured. The RF ablation generator may also produce an ablation signal across a source wire and an indifferent return patch electrode. The system further includes a cable that connects the generator to a catheter. The catheter includes a shaft having a proximal end and a distal end, with an ablation tip electrode disposed at the distal end. A source lead is electrically coupled to the tip electrode and extends through the shaft to the proximal end where it is terminated. An optional sense lead is also electrically coupled to the tip electrode and extends through the shaft to the proximal end. The system further includes a source return (e.g., skin patch) and a sense return (e.g., skin patch), either or none of which may be combined with the indifferent return, and if used may be placed on opposite sides of the patient for improved performance. The impedance sensor circuit produces an excitation signal across the source connectors, which is then carried to the catheter by the cable, then to the tip electrode, travels through the complex load (tissue volume), and returns to the generator via a patch electrode. The impedance is measured by observing the voltage drop across the sense connectors caused by the excitation signal.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 18/12 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 18/16 - Indifferent or passive electrodes for grounding

Abstract

A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61M 25/00 - CathetersHollow probes
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61M 25/10 - Balloon catheters
• A61B 5/24 - Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof

Abstract

A method and system for assessing lesion formation in tissue is provided. The system includes an electronic control unit (ECU). The ECU is configured to acquire values for first and second components of a complex impedance between the electrode and the tissue, and to calculate an index responsive to the first and second values. The ECU is further configured to process the ECI to assess lesion formation in the tissue.

IPC Classes  ?

• A61B 18/12 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
• A61B 18/14 - Probes or electrodes therefor
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• 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

Abstract

An electrophysiological laboratory system comprises a subsystem configured to perform diagnostic and/or therapeutic functions, a medical device, and an interface module disposed therebetween. The medical device comprises a shaft having proximal and distal portions, high- and low-impedance electrical pathways disposed within the shaft, and an electrode disposed at the distal portion of the shaft and electrically coupled to one or both of the high- and low-impedance electrical pathways. The electrode is configured to perform diagnostic and/or therapy delivery functions. The interface module comprises a high-impedance channel configured to couple the high-impedance pathway of the medical device to the subsystem, and to attenuate magnetic resonance RF and gradient field pulses generated by the MRI system. The interface module further comprises a low-impedance channel configured to couple the low-impedance pathway of the medical device to the subsystem.

IPC Classes  ?

• A61B 5/06 - Devices, other than using radiation, for detecting or locating foreign bodies
• A61B 18/14 - Probes or electrodes therefor
• A61B 5/042 - Electrodes specially adapted therefor for introducing into the body
• A61B 5/055 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 5/0205 - Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
• A61N 1/05 - Electrodes for implantation or insertion into the body, e.g. heart electrode
• A61N 1/36 - Applying electric currents by contact electrodes alternating or intermittent currents for stimulation, e.g. heart pace-makers
• G01R 33/28 - Details of apparatus provided for in groups

Abstract

A method of manufacturing a catheter assembly generally includes providing a catheter shaft having an outer layer and an inner reinforcing layer; removing at least a portion of the outer layer from a length of the distal end of the catheter shaft in order to expose a distal segment thereof; providing an inner jacket segment; axially engaging the inner jacket segment with an interior surface of the distal segment of the catheter shaft; providing an outer jacket segment around at least the exposed exterior region of the distal segment of the catheter shaft; and bonding the distal segment of the catheter shaft to the inner jacket segment and the outer jacket segment.

IPC Classes  ?

• A61M 25/00 - CathetersHollow probes
• F16L 11/08 - Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall

Abstract

The present invention pertains to multiple piece irrigated ablation electrode assemblies wherein the irrigation channels are insulated or separated from at least one temperature sensing mechanism within the distal portion of the electrode assembly. The present invention further pertains to methods for improved assembly and accurate measurement and control of the electrode temperatures while effectively irrigating the device and target areas.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 34/20 - Surgical navigation systemsDevices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

A fluid delivery catheter configured to allow optimal fluid distribution through each electrode by varying the diameter of a catheter lumen is disclosed. Uniform or different fluid flow rates through longitudinally spaced apart elution holes may be achieved. Exemplary fluids for use with the catheter include a cooling fluid, a therapeutic fluid, and a medication.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61M 25/00 - CathetersHollow probes
• A61M 25/10 - Balloon catheters
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

An obstruction detection system for a robotic catheter system including a robotic catheter manipulator assembly including one or more catheter manipulation bases and one or more sheath manipulation bases. Each manipulation base may be generally linearly movable on one or more tracks relative to the robotic catheter manipulator assembly. The obstruction detection system may include one or more obstruction detection sensors disposed on the track or on the manipulation bases to detect an obstruction along a path of motion of one or more manipulation bases. A software system may be provided for monitoring movement of the catheter and sheath manipulation bases, and/or a status of the obstruction detection sensors.

IPC Classes  ?

• A61B 34/30 - Surgical robots
• A61B 34/37 - Leader-follower robots
• A61B 34/00 - Computer-aided surgeryManipulators or robots specially adapted for use in surgery
• A61B 34/20 - Surgical navigation systemsDevices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• 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
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• A61B 18/14 - Probes or electrodes therefor
• A61B 17/00 - Surgical instruments, devices or methods

Abstract

A system and method for assessing contact between a medical device and tissue may comprise an electronic control unit (ECU) configured to be coupled to a medical device, the medical device comprising a first electrode and a second electrode. The ECU may be further configured to select the first electrode as an electrical source and the second electrode as an electrical sink, to cause an electrical signal to be driven between the source and sink, to detect respective electric potentials on the first electrode and the second electrode while the electrical signal is driven, and to determine an impedance respective of one of the first electrode and the second electrode according to both of the respective electric potentials.

IPC Classes  ?

• A61B 5/24 - Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
• A61B 5/06 - Devices, other than using radiation, for detecting or locating foreign bodies
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 18/14 - Probes or electrodes therefor
• A61B 5/0538 - Measuring electrical impedance or conductance of a portion of the body invasively, e.g. using a catheter
• 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
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

The instant invention relates generally to introducer catheters used to help deliver catheters or other medical devices to locations within the human body. In particular, the instant invention relates to large diameter introducer catheters (introducer catheters with lumens greater than about 6 French) having increased strength, flexibility, and kink resistance. Introducer catheters according to the teachings herein may also include curved distal ends and flared (that is, funnel-like) transition sections within their lumens.

IPC Classes  ?

• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• A61M 25/00 - CathetersHollow probes
• A61M 25/06 - Body-piercing guide needles or the like
• B29C 41/20 - Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped articleApparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. moulding around inserts or for coating articles
• B29L 31/00 - Other particular articles

Abstract

In various embodiments, a catheter comprising an expandable electrode assembly or basket is provided. In specific embodiments, the basket is particularly useful for mapping electrical activity at one or more locations within the heart. The basket can comprise a plurality of bendable or deflectable arms. At least one of the arms may have varied flexibility over its length in the form of one or more discontinuities of stiffness or flexibility at an elbow region or other variances in flexibility over the arm's length. Such variance in flexibility may allow the arm to assume a different bent configuration or respond to external factors more positively than possible with an arm having a static or near static flexibility or stiffness over its length.

IPC Classes  ?

• A61B 5/04 - Measuring bioelectric signals of the body or parts thereof
• A61B 18/14 - Probes or electrodes therefor
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 5/287 - Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Goods & Services

Medical devices, namely, electrophysiology systems comprised of electrophysiology catheters, sensors, electrodes, amplifiers, computer hardware, operating software, displays, monitors and computer accessories therefor, namely, workstations, carts, cables, power cords, keyboards, mouses, bedrail mounting bars, and isolation transformers, all for use in diagnostic procedures

Abstract

A catheter apparatus includes an elongated body having a distal portion including a distal end, a plurality of flexible segments, and at least one intermediate segment that is less flexible than the flexible segments. Adjacent flexible segments are spaced from each other longitudinally by the at least one intermediate segment. Each of the flexible segments include a sidewall having at least one elongated gap extending at least partially therethrough and forming interlocking members. The at least one intermediate segment is shorter than the flexible segments.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61M 25/00 - CathetersHollow probes
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

A method of manufacturing a catheter shaft includes extruding an inner polymeric layer having a main lumen and two or more side lumens spaced about the main lumen; forming an outer polymeric layer about the inner polymeric layer; and inserting at least one elongate member, such as a wire, through each side lumen of the inner polymeric layer. The side lumens are less than about ⅕ the size of the main lumen. The method may further include the step of forming a braided layer between the inner polymeric layer and the outer polymeric layer. In an alternate embodiment, the method includes co-extruding an inner polymeric layer and a multi-lumen layer, the multi-lumen layer having two or more side lumens; forming an outer polymeric layer about the multi-lumen layer; and inserting at least one elongate member through each side lumen. Catheter assemblies made according to the described methods are also disclosed.

IPC Classes  ?

• A61M 25/00 - CathetersHollow probes
• B29C 48/10 - Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
• B29C 48/21 - Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
• B29C 48/00 - Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired formApparatus therefor
• A61B 18/14 - Probes or electrodes therefor
• A61L 29/04 - Macromolecular materials
• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• F16L 11/22 - Multi-channel hoses
• B29D 23/00 - Producing tubular articles
• A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
• B29C 49/04 - Extrusion blow-moulding
• B29K 27/18 - PTFE, i.e. polytetrafluorethene
• B29L 31/00 - Other particular articles
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

An electrode support structure assembly is provided comprising an electrode support structure including a plurality of splines. Each of the plurality of splines can have a proximal end portion and a distal end portion. The assembly further comprises a first element defining an axis and comprising an outer surface. The outer surface comprises a plurality of slots configured to receive the distal end portion of each of the plurality of splines. The first element is configured such that the distal end portion of each of the plurality of splines may move with respect to each slot. In accordance with some embodiments, the distal end portion of each of the plurality of splines comprises a section configured for engagement with the first element, wherein the section comprises a shoulder.

IPC Classes  ?

• A61B 5/042 - Electrodes specially adapted therefor for introducing into the body
• A61B 18/14 - Probes or electrodes therefor
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 5/287 - Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

The invention relates to ablation catheter electrodes that solve in part the problem of tissue charring during radiofrequency ablation. The electrode assemblies of the invention include passageways that lead from the inner lumen of the assemblies to the surface of the assemblies, wherein the passageways have a smooth conjunction with the outer surface. These smooth conjunctions comprise rounded edges or are chamfered. In the case of rounded edges, the rounded edges can have fixed radii of about 0.002″ to about 0.008″.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

Ablation catheter comprising an elongate member with proximal and distal ends, wherein the distal end is arranged to apply a high energy electrical shock from a plurality of locations along the length of said distal end and wherein said distal end is curved. Preferably the distal end of the elongate member extends in a circle segment.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor

Abstract

A family of catheter electrode assemblies includes a flexible circuit having a plurality of electrical traces and a substrate; a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the electrode. A non-contact electrode mapping catheter includes an outer tubing having a longitudinal axis, a deployment member, and a plurality of splines, at least one of the plurality of splines comprising a flexible circuit including a plurality of electrical traces and a substrate, a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the ring electrode. A method of constructing the family of catheter electrode assemblies is also provided.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 5/287 - Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

A flexible tip electrode for an ablation catheter is disclosed. The catheter includes a catheter body and a hollow elongate tip electrode disposed at a distal end of the catheter body. The electrode includes a sidewall provided with one or more elongate gaps extending therethrough. The one or more elongate gaps providing flexibility in the sidewall for bending movement of the tip electrode relative to a longitudinal axis of the catheter body.

IPC Classes  ?

• A61B 18/12 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
• A61B 18/14 - Probes or electrodes therefor
• 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
• A61B 17/00 - Surgical instruments, devices or methods
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

An elongate medical device may comprise an elongate tubular body, an electrode, and a trace. The elongate tubular body may comprise a distal end portion and a proximal end portion, the body defining a longitudinal axis. The electrode may comprise electrically-conductive ink extending circumferentially about a portion of the distal end portion. The trace may comprise electrically-conductive ink, electrically coupled with the electrode, extending proximally from the electrode.

IPC Classes  ?

• A61B 5/042 - Electrodes specially adapted therefor for introducing into the body
• A61B 18/14 - Probes or electrodes therefor
• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• G01L 1/16 - Measuring force or stress, in general using properties of piezoelectric devices
• G01L 1/00 - Measuring force or stress, in general
• G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
• A61N 1/05 - Electrodes for implantation or insertion into the body, e.g. heart electrode
• A61B 5/287 - Holders for multiple electrodes, e.g. electrode catheters for electrophysiological study [EPS]
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

An irrigated ablation catheter includes a shaft having a proximal end, a distal end, and an irrigation lumen therein. The catheter further includes an electrode assembly coupled to the distal end of the shaft. The electrode assembly includes an ablation electrode and a manifold. The manifold is coupled to each of the distal end of the shaft and the proximal end of the electrode. At least a portion of the manifold is constructed of a flexible material to allow the electrode assembly to deflect. The manifold includes a body, an inner cavity within the body configured for fluid communication with the irrigation lumen, and an irrigation port also within the body and configured for fluid communication with the inner cavity. The irrigation port extends from the inner cavity to the outer surface of the body, and is configured to allow for an irrigating fluid to be distributed from the manifold.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

Magnetic guided ablation catheters and methods of manufacture are disclosed. In an exemplary embodiment, a catheter includes a unitary flexible tubing having a proximal end and a distal end. A plurality of magnets are positioned along an axis of the unitary flexible tubing, the plurality of magnets provided within the unitary flexible tubing. During operation, the plurality of magnets are responsive to an external magnetic field to selectively position and guide the catheter within a body of a patient.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61M 25/00 - CathetersHollow probes
• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 17/00 - Surgical instruments, devices or methods

Abstract

A system and method for assessing effective delivery of ablation therapy to a tissue in a body is provided. A three-dimensional anatomical map of the tissue is generated and displayed with the map defining a corresponding volume. An index is generated corresponding to a location within the volume with the index indicative of a state of ablation therapy at the location. The index may be derived from one or more factors such as the duration an ablation electrode is present at the location, the amount of energy provided, the degree of electrical coupling between an ablation electrode and the tissue at the location and temperature. A visual characteristic (e.g., color intensity) of a portion of the anatomical map corresponding to the location is then altered responsive to the index.

IPC Classes  ?

• A61B 18/12 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
• A61B 18/14 - Probes or electrodes therefor
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 5/06 - Devices, other than using radiation, for detecting or locating foreign bodies
• 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
• A61B 5/01 - Measuring temperature of body parts
• A61B 18/02 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61N 7/02 - Localised ultrasound hyperthermia
• A61B 5/0538 - Measuring electrical impedance or conductance of a portion of the body invasively, e.g. using a catheter
• A61B 17/00 - Surgical instruments, devices or methods

Goods & Services

(1) Medical instrument, namely, steerable catheter.

Goods & Services

Medical instrument, namely, steerable catheter.

Goods & Services

Medical instrument, namely, steerable catheter

Abstract

An irrigated ablation catheter includes a shaft and an electrode assembly affixed to a distal end of the shaft. The distal electrode assembly includes a manifold and an ablation electrode affixed together and extending along a center axis. The electrode has a distal irrigation passageway extending therethrough to an opening at a distal tip of the electrode. The opening of the irrigation passageway is offset in distance from the center axis, and allows a thermal sensor such as a thermocouple to be located in a sensor cavity in the electrode on or near the center axis. One variation involves providing a pair of distal irrigation passageways through the electrode where both of the openings of the passageways are offset from the center axis. The thermal sensor in this variation is located in the sensor cavity substantially on the center axis.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61M 25/00 - CathetersHollow probes
• A61B 17/00 - Surgical instruments, devices or methods
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

A catheter assembly includes an inner liner made of flexible material and an outer layer having a steering mechanism. The steering mechanism includes at least one flat wire and a corresponding lumen through which the flat wire may travel. The steering mechanism may also include at least one pull ring to which the flat wires are attached. A layer of heat shrink material may encompass the outer layer. A braided wire assembly may also be provided in the outer layer, and may be formed by braiding a plurality of flat wires into a wire mesh. The overall cross-section of the catheter assembly is preferably substantially circular. A catheter shaft may include a plurality of segments of differing hardness characteristics. The outer layer typically comprises a melt processing polymer such that the catheter assembly may be laminated using heat.

IPC Classes  ?

• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• A61M 25/00 - CathetersHollow probes

Abstract

A system for controlling delivery of ablation energy by an ablation catheter to tissue in a body is provided. The system includes an electronic control unit configured to determine, responsive to a measurement signal from the ablation catheter, a value for a characteristic associated with the delivery of ablation energy to the tissue. In one embodiment, the characteristic is the degree of contact between the ablation catheter and the tissue. The unit is further configured to generate a control signal, responsive to the determined value of the characteristic, to control an amount of energy delivered from an ablation delivery element on the ablation catheter to the tissue. The amount of energy varies in response to the determined value of the characteristic when the determined value of the characteristic meets a predetermined condition relative to a threshold value for the characteristic.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• 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

Abstract

The invention provides a deflectable catheter capable of forming many variable radius spiral forms from a single, flexible, distal end section. In one aspect, the catheter employs a variable radius control wire to extend or deform a pre-formed loop structure into a three dimensional spiral-like form or geometry. The ability of a single catheter to create a multitude of shapes and sizes allows users to access to a number of anatomical areas without changing the catheter during a procedure or treatment. In another aspect, the invention encompasses methods of producing deflectable variable radius catheters, where two or more regions of the catheter having common control wires are fused or formed onto one another.

IPC Classes  ?

• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• A61M 25/00 - CathetersHollow probes
• A61M 25/10 - Balloon catheters

Abstract

An apparatus for imparting a tensile force to deflect a distal portion of a catheter while maintaining its exterior dimensions may include a handle grip including a cross-section of generally predetermined exterior dimensions, and a longitudinal axis. A flexible elongate member may include proximal and distal end portions, with the proximal end portion being coupled to the handle grip. An adjustment knob may include a cross-section of generally predetermined exterior dimensions, and is rotatably coupled to the handle grip around the longitudinal axis. An elongate deflection member may be operably coupled to the adjustment knob and to the distal end portion of the elongate member. Rotation of the adjustment knob may impart a tensile force to the deflection member thereby causing the distal end portion of the elongate member to deflect from a prior configuration while maintaining the generally predetermined exterior dimensions of the handle grip and the adjustment knob.

IPC Classes  ?

• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• A61B 5/042 - Electrodes specially adapted therefor for introducing into the body

Abstract

A deflectable catheter shaft section is disclosed comprising an elongated body extending along a longitudinal axis and comprising a distal end and a proximal end; and a plurality of lumens extending along the longitudinal axis of the elongated body, wherein at least one of the lumens is abutting at least another one of the lumens. A catheter comprising the deflectable catheter shaft section and a method of manufacturing the deflectable catheter shaft section are also disclosed. A catheter incorporating a deflectable catheter shaft section can further comprise first and second compression coils disposed over pull wires located within the catheter, wherein the compression coils are unattached to the catheter or components thereof, but can be constrained by a shaft coupler at a distal end of each of the compression coils and by at least a portion of a handle assembly at a proximal end of each of the compression coils.

IPC Classes  ?

• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• A61B 18/14 - Probes or electrodes therefor
• A61M 25/00 - CathetersHollow probes
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 5/01 - Measuring temperature of body parts
• A61B 5/283 - Invasive

Abstract

An apparatus for detecting deformation of an elongate body may comprise a light source configured to sequentially provide light of multiple frequencies, an optical receiver configured to receive light from the light source, and a filter disposed between the light source and the optical detector. The filter may comprise multiple segments, each of the segments configured to filter light at one of the frequencies so as to alter the amount of light incident on said optical receiver. A total amount of light detected by the optical receiver may change during the sequence so as to be indicative of deformation of the elongate body.

IPC Classes  ?

• G01N 21/84 - Systems specially adapted for particular applications
• 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
• G01B 11/16 - Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
• G01L 1/24 - Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis
• G01L 5/00 - Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
• A61M 25/00 - CathetersHollow probes

Abstract

An electrophysiology catheter is provided. In one embodiment, the catheter includes an elongate, deformable shaft having a proximal end and a distal end and a basket electrode assembly coupled to the distal end of the shaft. The basket electrode assembly has a proximal end and a distal end and is configured to assume a compressed state and an expanded state. The electrode assembly further includes one or more tubular splines having a plurality of electrodes disposed thereon and a plurality of conductors. Each of the plurality of conductors extends through the tubular spline from a corresponding one of the plurality of electrodes to the proximal end of the basket electrode assembly. The tubular splines are configured to assume a non-planar (e.g., a twisted or helical) shape in the expanded state.

IPC Classes  ?

• A61B 5/042 - Electrodes specially adapted therefor for introducing into the body
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 18/14 - Probes or electrodes therefor
• A61B 5/04 - Measuring bioelectric signals of the body or parts thereof
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

A medical device is provided comprising a shaft comprising a first segment and a second segment. The first segment is configured to buckle upon application of a first critical force. The second segment includes an outer surface and an inner surface and is configured to buckle upon application of a second critical force. The second critical force is lower than the first critical force. The medical device further comprises a coil disposed radially inwardly of the inner surface of the second segment.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61M 25/00 - CathetersHollow probes
• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• A61M 25/09 - Guide wires
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• 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

Abstract

A dual braided catheter shaft includes an inner helical braid and outer helical braid than encapsulate an axially extending steering wire there between. In one embodiment, the shaft includes an inner polymer jacket, an inner braid formed on the inner jacket, a steering wire disposed along an outside surface of the inner braid, an outer braid formed over the inner braid and steering wire assembly and an outer jacket formed on the outer braid. The braiding parameters of the inner and outer braids can be varied along the length of the catheter to provide varying mechanical properties.

IPC Classes  ?

• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• A61M 25/00 - CathetersHollow probes

Abstract

A monitoring, managing and protecting system is provided that includes a monitoring probe working in conjunction with an ablating device. The probe is configured to be positioned in close proximity to a region of non-targeted tissue proximate an ablation site of targeted tissue and to be operatively connected to an electrical response assessment system or component. The probe includes an elongate shaft having proximal and distal ends, with a handle disposed at the proximal end thereof and a tissue monitoring and protecting apparatus disposed at the distal end thereof. The ablating device includes an elongate shaft having proximal and distal ends, with a handle mounted at the proximal end thereof and an ablation element mounted at the distal end thereof. The monitoring probe measures electrical characteristics of the non-targeted tissue and/or of the tissue between the monitoring electrode and the ablation electrode. The electrical response assessment system determines whether the tissue is being damaged based on the electrical measurements. The monitoring, managing and protecting system can notify a practitioner based on the determination, or modify or stop the ablation procedure.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• 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
• A61B 34/30 - Surgical robots
• A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

A method of manufacturing a catheter shaft includes the steps of forming an inner layer of a first polymeric material, forming a plait matrix layer including a second polymeric material about the inner layer, and forming an outer layer of a third polymeric material about the plait matrix layer. The plait matrix layer includes a braided wire mesh partially or fully embedded within the second polymeric material, which is different from at least one of the first polymeric material forming the inner layer and the third polymeric material forming the outer layer. The second polymeric material has a higher yield strain and/or a lower hardness than at least the first polymeric material, and preferably both the first and the third polymeric materials. The first polymeric material and the third polymeric material may be different or the same. The catheter shaft may be formed by stepwise extrusion, co-extrusion, and/or reflow processes.

IPC Classes  ?

• A61M 25/00 - CathetersHollow probes
• B29C 48/151 - Coating hollow articles
• B29C 61/00 - Shaping by liberation of internal stressesMaking preforms having internal stressesApparatus therefor
• B29D 23/00 - Producing tubular articles
• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• B29C 63/00 - Lining or sheathing, i.e. applying preformed layers or sheathings of plasticsApparatus therefor
• B29L 31/00 - Other particular articles
• B29K 27/18 - PTFE, i.e. polytetrafluorethene
• B29K 105/16 - Fillers

Abstract

A method for projecting a 3D surface geometry onto a planar projection comprises: obtaining a 3D geometry of a chamber surface using an algorithm that generates angles and distances between points on the chamber surface that represent mapping information; applying a cutting curve to at least two points on the chamber surface; and at least partially unfolding at least a portion of the chamber surface along the cutting curve to form a planar projection that optimally preserves the angles and distances between points on the chamber surface.

IPC Classes  ?

• A61B 5/042 - Electrodes specially adapted therefor for introducing into the body
• G06T 11/00 - 2D [Two Dimensional] image generation
• G06T 17/20 - Wire-frame description, e.g. polygonalisation or tessellation
• G06T 19/00 - Manipulating 3D models or images for computer graphics
• G06T 19/20 - Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
• A61B 5/0408 - Electrodes specially adapted therefor

Goods & Services

Computer hardware, software, and interfaces for use in the field of electrophysiology for collecting, mapping, visualizing, and analyzing electroanatomical data.

Goods & Services

Computer hardware, software, and interfaces for use in the field of electrophysiology for collecting, mapping, visualizing, and analyzing electroanatomical data

Goods & Services

(1) Computer hardware, software, and interfaces for use in the field of electrophysiology for collecting, mapping, visualizing, and analyzing electroanatomical data

Abstract

A deflectable catheter shaft section is disclosed comprising an elongated body extending along a longitudinal axis and comprising a distal end and a proximal end; and a plurality of lumens extending along the longitudinal axis of the elongated body, wherein at least one of the lumens is abutting at least another one of the lumens. A catheter comprising the deflectable catheter shaft section and a method of manufacturing the deflectable catheter shaft section are also disclosed. A catheter incorporating a deflectable catheter shaft section can further comprise first and second compression coils disposed over pull wires located within the catheter, wherein the compression coils are unattached to the catheter or components thereof, but can be constrained by a shaft coupler at a distal end of each of the compression coils and by at least a portion of a handle assembly at a proximal end of each of the compression coils.

IPC Classes  ?

• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• A61B 18/14 - Probes or electrodes therefor
• A61M 25/00 - CathetersHollow probes
• A61B 5/042 - Electrodes specially adapted therefor for introducing into the body
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 5/01 - Measuring temperature of body parts

Abstract

An irrigated ablation electrode assembly comprises a distal member, a first manifold, and a second manifold. The distal member includes an outer surface; an inner surface; and at least one radially extending passageway that extends from the inner surface of the distal member to the outer surface of the distal member. The first manifold includes an outer surface, an inner cavity, and at least one radially extending passageway that extends from the inner cavity to the outer surface of the first manifold. The second manifold includes an outer surface, an inner surface, and at least one radially extending passageway that extends from the inner surface of the second manifold to the outer surface of the second manifold. Other irrigated ablation electrode assemblies are also presented.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 18/02 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques

Abstract

An elongate medical device with independently-deflectable segments and a handle for manually deflecting those segments can include a shaft having a distal segment and proximal segment, at least one proximal segment deflection wire adapted to deflect the proximal segment, at least one distal segment deflection wire adapted to deflect the distal segment independent of the proximal segment, and a handle portion. The handle portion may comprise a first manual actuation mechanism coupled to the at least one distal segment deflection wire and a second manual actuation mechanism coupled to the at least one proximal segment deflection wire. Actuation of the first manual actuation mechanism may impart a tensile force on the distal segment deflection wire to cause the distal segment to deflect, and actuation of the second manual actuation mechanism may impart a tensile force on the proximal segment to cause the proximal segment to deflect.

IPC Classes  ?

• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• B29C 65/02 - Joining of preformed partsApparatus therefor by heating, with or without pressure
• A61B 5/042 - Electrodes specially adapted therefor for introducing into the body
• A61B 5/06 - Devices, other than using radiation, for detecting or locating foreign bodies
• A61B 18/14 - Probes or electrodes therefor
• A61B 17/00 - Surgical instruments, devices or methods
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61M 25/00 - CathetersHollow probes

Abstract

A system for providing irrigation fluid during ablation of tissue includes a catheter, an electrode assembly, at least one thermal sensor adapted to be connected to the catheter, and a control system. The electrode assembly is adapted to be connected to an ablation generator. The thermal sensor is adapted to be operatively connected to an electronic control unit (ECU). The ECU receives as an input temperature measurement data from the thermal sensor; determines a power delivery rate value for the ablation generator responsive to the temperature measurement data; and outputs the power delivery rate value. The control system also delivers irrigation fluid to the irrigated catheter at a first flow rate in a first time period and at a second flow rate in a second time period that is temporally after the first time period. The second flow rate is at least half of the first flow rate.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61B 18/06 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating caused by chemical reaction
• A61B 18/08 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by means of electrically-heated probes
• A61B 18/24 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibreHand-pieces therefor with a catheter
• A61B 18/02 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
• A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
• A61B 34/20 - Surgical navigation systemsDevices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis

Abstract

Embodiments of a guide and flexible sleeve for use with catheters for ablation or other medical procedures are disclosed. An exemplary catheter comprises a guide element having a proximal end and a distal end, the distal end configurable in a desired shape. A flexible sleeve is conformable to the guide element so that the flexible sleeve slides over the guide element, the flexible sleeve has a proximal end and a distal end. A controller couples to the flexible sleeve. The controller operates to move the flexible sleeve at least part way between the distal end of the guide element and the proximal end of the guide element. At least one ablation element disposed at the distal end of the flexible sleeve operates to form a substantially continuous ablative lesion when the flexible sleeve is in contact with a contiguous volume of target tissue.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61B 17/00 - Surgical instruments, devices or methods
• 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
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• 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
• A61B 5/283 - Invasive

Abstract

A system and method are provided for determining electrophysiological data. The system comprises an electronic control unit that is configured to receive electrical signals from a set of electrodes, receive position and orientation data for the set of electrodes from a mapping system, compensate for position and orientation artifacts of the set of electrodes, compose cliques of a subset of neighboring electrodes in the set of electrodes, determine catheter orientation independent information of a target tissue, and output the orientation independent information to a display. The method comprising receiving electrogram data for a set of electrodes (80), compensating for artifacts in sensor positions in the mapping system (81), resolving the bipolar signals into a 3D vector electrogram in the mapping system coordinates (82), manipulating observed unipolar voltage signals and the tangent component of the e-field to estimate the conduction velocity vector (83), and outputting the catheter orientation independent information (84).

IPC Classes  ?

• A61B 5/04 - Measuring bioelectric signals of the body or parts thereof
• A61B 5/042 - Electrodes specially adapted therefor for introducing into the body
• A61B 5/0452 - Detecting specific parameters of the electrocardiograph cycle
• A61B 5/06 - Devices, other than using radiation, for detecting or locating foreign bodies
• A61B 18/14 - Probes or electrodes therefor
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 34/20 - Surgical navigation systemsDevices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• A61B 17/00 - Surgical instruments, devices or methods
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

A catheter includes a braid assembly having a dual-laminate coating. The braid assembly includes a plurality of braid members interwoven to provide for interstices between the braid members, each braid member having an electrically conductive element, a flexible non-electrically-conductive polymer coating that insulates the electrically conductive element and a thermoplastic bonding adhesive coating. The braid assembly is formed between an inner polymer layer and an outer polymer layer. One or more of the braid members may be coupled to an energy delivery element.

IPC Classes  ?

• A61B 18/14 - Probes or electrodes therefor
• A61M 25/00 - CathetersHollow probes
• A61N 1/05 - Electrodes for implantation or insertion into the body, e.g. heart electrode
• B32B 37/12 - Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
• B32B 38/00 - Ancillary operations in connection with laminating processes
• B32B 38/08 - Impregnating
• A61B 5/042 - Electrodes specially adapted therefor for introducing into the body
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
• A61N 7/00 - Ultrasound therapy

Abstract

Systems and methods for aligning directionally operable medical devices with and upon target tissue. Systems and methods for aligning medical devices such as directional ablation catheters to and upon target tissue by monitoring irrigant backpressure. The current disclosure provides solutions to the problem of rotationally or angularly aligning a directional medical device toward tissue.

IPC Classes  ?

• A61B 17/32 - Surgical cutting instruments
• A61B 18/18 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
• A61B 18/14 - Probes or electrodes therefor
• A61N 7/00 - Ultrasound therapy
• 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
• A61B 18/00 - Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

Abstract

Catheter shaft handles and deflection actuators are disclosed. The actuators include at least one pull wire guide wall and a means for anchoring the proximal portion of a pull wire or of a fiber attached to a pull wire. Each actuator is pivotable relative to the catheter handle housing, and may comprise at least one boss for pivoting the actuator relative to the catheter handle housing. The actuators transfer rotational motion based upon user input on a boss into longitudinal motion of a pull wire. The actuators may include a tensioning mechanism comprising a tension adjustment pin and a pin block, wherein the tension adjustment pin is rotatably attached to the pin block to enable adjustment of tension in a pull wire (e.g., during assembly of the catheter handle).

IPC Classes  ?

• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters

Abstract

A medical device can be localized by providing at least three non-colinear localization elements (e.g., electrodes) thereon. Once placed in a non-ionizing localization field, three adjacent localization elements, at least one of which will typically be a spot electrode, may be selected, and the non-ionizing localization field may be used to measure their locations. A cylinder is defined to fit the measured locations of the selected localization elements. The cylinder is rotationally oriented using the measured location of a spot electrode. Location and rotational attitude information may be used to construct a three-dimensional representation of the medical device within the localization field. The electrodes may be provided on the medical device or on a sheath into which the medical device is inserted. The invention also provides systems and methods for identifying and calibrating deflection planes where the medical device and/or sheath are deflectable.

IPC Classes  ?

• A61B 5/06 - Devices, other than using radiation, for detecting or locating foreign bodies
• A61M 25/00 - CathetersHollow probes
• A61M 25/01 - Introducing, guiding, advancing, emplacing or holding catheters
• A61B 34/20 - Surgical navigation systemsDevices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• A61B 8/12 - Diagnosis using ultrasonic, sonic or infrasonic waves in body cavities or body tracts, e.g. by using catheters
• A61B 17/00 - Surgical instruments, devices or methods