An apparatus includes a proximal shaft configured to mechanically couple to a motor, a first universal joint, a middle shaft coupled to the proximal shaft via the first universal joint, a housing having a bore, a second universal joint within the bore, a distal shaft coupled to the middle shaft via the second universal joint, and a connector disposed over the distal shaft. The bore limits a downward tilt of the distal shaft such that, as a rotor approaches the distal shaft, the distal shaft becomes axially aligned with the rotor by virtue of the proximal end of the rotor entering the connector or vice versa. A spring connected proximally to the connector and distally to the second universal joint is configured to decompress, thereby reversibly coupling the connector to the proximal end of the rotor, upon the motor rotationally aligning the connector with the proximal end of the rotor.
A computer based surgical support method to determine a type of handpiece connected to a surgical system is disclosed. The method includes providing irrigation fluid from an irrigation reservoir to the handpiece via an irrigation line; providing aspiration via an aspiration line; measuring a first vacuum level associated with the aspiration line; and based on the measured vacuum value, determining the type of handpiece coupled with the surgical system.
A61B 17/00 - Surgical instruments, devices or methods
A61B 90/00 - Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups , e.g. for luxation treatment or for protecting wound edges
A61B 90/90 - Identification means for patients or instruments, e.g. tags
3.
SURGICAL HANDPIECE WITH CONSTRICTIONS IN ASPIRATION PATHWAY
A surgical handpiece is provided herein. The surgical handpiece may include: an ultrasonic horn having a lumen and configured to couple with the needle; one or more piezoelectric elements coupled with the horn and configured to ultrasonically vibrate a distal end of the needle to emulsify material; an aspiration channel extending from the distal end of the needle and through the lumen of the horn creating an aspiration pathway; and at least one constriction on an inner surface of the lumen of the horn and into the aspiration pathway, wherein the at least one constriction is configured to emulsify the material proximally along the aspiration pathway from the distal end of the needle in response to the one or more piezoelectric elements.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
4.
Phacoemulsification Apparatus Including An Anti-Vacuum Surge Valve Mechanism
A phacoemulsification system including a phacoemulsification probe including a hollow needle configured to provide an aspiration channel, a valve module including a valve closing element configured to close the aspiration channel upon activation, and a controller for providing an electric current pulse to activate the valve closing element to close the valve module, wherein the controller is programmed to detect a vacuum surge, provide an electric current pulse to a valve actuator in order to activate the valve closing element to close the valve module, wherein the shape of the current pulse includes a first section configured to accelerate the valve closing element, and a second section to decelerate the valve closing element as the valve closing element approaches an end of travel to prevent the valve closing element from hitting the end of travel and bouncing back, thereby preventing a recoil effect. Related apparatus and methods are also described.
An ultrasonic transducer is described having a resonant horn and piezoelectric elements arranged to impart vibration to the horn. The piezoelectric elements are wedge-shaped with respect to a central axis of the horn and arranged on the horn to impart to a distal end of the horn in a longitudinal direction vibration with respect to the central axis and/or a transverse direction vibration with respect to the central axis. Configurations are also described having additional wedge-shaped piezoelectric elements that may impart vibration in a second transverse direction with respect to the central axis. A phacoemulsification probe is described including wedge-shaped piezoelectric elements. Methods for energizing the piezoelectric elements are also described.
An example lens delivery device is provided. The lens delivery device can include a body comprising a channel therethrough. A first interference portion can be located within the channel. A plunger can be configured to receive a user-supplied force to move the plunger axially through the channel of the body. The plunger can include a second interference portion, located along a length of the plunger, configured to interact with the first interference portion during the axial movement of the plunger to form a damping mechanism to maintain a specified resistance to the user-supplied force.
This invention is directed to compounds and compositions which are designed for use in light adjustable ophthalmic devices, such as intraocular implants, intraocular lenses, phakic intraocular lenses, contact lenses, orthokeratology lenses, rigid gas permeable lenses, corneal inlays, corneal outlays, or corneal inserts. The inventive compositions are produced from reactive monomer mixtures which when polymerized form polymers or polymeric networks having editable refractive indices. Such inventive compositions when exposed to light of certain wavelengths undergo intramolecular cycloaddition reactions thereby changing the refractive index in the irradiated regions. When used in ophthalmic devices, the inventive compositions enable post-manufacturing and/or post-operative adjustments to the optics of the devices by spatially modifying the refractive index. For example, the vision of a patient with an intraocular lens made of the inventive compositions can be fine-tuned after implantation and healing by a light treatment of the intraocular lens.
A61F 2/14 - Eye parts, e.g. lenses or corneal implantsArtificial eyes
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B29K 33/00 - Use of polymers of unsaturated acids or derivatives thereof, as moulding material
B29K 105/00 - Condition, form or state of moulded material
B29K 105/24 - Condition, form or state of moulded material cross-linked or vulcanised
C07D 311/16 - Benzo [b] pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 2 not hydrogenated in the hetero ring substituted in position 7
C07D 405/12 - Heterocyclic compounds containing both one or more hetero rings having oxygen atoms as the only ring hetero atoms, and one or more rings having nitrogen as the only ring hetero atom containing two hetero rings linked by a chain containing hetero atoms as chain links
C08F 220/36 - Esters containing nitrogen containing oxygen in addition to the carboxy oxygen
This invention is directed to compounds and compositions which are designed for use in light adjustable ophthalmic devices, such as intraocular implants, intraocular lenses, phakic intraocular lenses, contact lenses, orthokeratology lenses, rigid gas permeable lenses, corneal inlays, corneal outlays, or corneal inserts. The inventive compositions are produced from reactive monomer mixtures which when polymerized form polymers or polymeric networks having editable refractive indices. Such inventive compositions when exposed to light of certain wavelengths undergo intramolecular cycloaddition reactions thereby changing the refractive index in the irradiated regions. When used in ophthalmic devices, the inventive compositions enable post-manufacturing and/or post-operative adjustments to the optics of the devices by spatially modifying the refractive index. For example, the vision of a patient with an intraocular lens made of the inventive compositions can be fine-tuned after implantation and healing by a light treatment of the intraocular lens.
A surgical system having a handpiece with a distal end; a pumping module configured for transmitting and/or evacuating fluid via the handpiece; a pressure sensor assembly positioned along fluid flow between the pumping module and distal end of the handpiece and configured for providing data on fluid pressure along the fluid flow; and a controller having one or more processors configured for operating the pumping module. The pressure sensor assembly includes at least three sensors positioned at two or more locations along the path of fluid flow between the pumping module and the distal end. The controller is configured for obtaining pressure data from the at least three sensors of the arrangement of sensors, and for processing the pressure data of the different sensors in accordance with a rotation rate of the pumping module to determine status of pressure data output by the at least three sensors.
Described are implementations of systems and methods for an improved machine learning-based system that incorporates pre-operative and intraoperative measurements captured during surgery, as well as additional patient-specific data, to provide an individualized, highly accurate post-operative manifest refraction prediction. According to some embodiments, a determination engine generates a predictive feature set of one or more predictors associated with diagnostic measurements of one or more eyes and performs a recursive selection operation using one or more combinations within the predictive feature set and one or more models to produce a most predictive subset, the most predictive subset having a highest prediction accuracy among other predictive subsets for post-operative manifest refraction. The determination engine generates a determination model by refining and retraining the one or more models of the recursive selection operation utilizing the most predictive subset.
A61B 3/107 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining the shape or measuring the curvature of the cornea
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 34/10 - Computer-aided planning, simulation or modelling of surgical operations
11.
SURGICAL INSTRUMENTS FOR PHACOEMULSIFICATION SURGERY
A surgical instrument for phacoemulsification procedures is disclosed. The surgical instrument may include a handpiece assembly and a cleaning member. The cleaning member may be coupled with the handpiece assembly. The cleaning member may be configured to be inserted into anterior chamber of the eye of a patient and into a capsular bag of the eye. The cleaning member may include one or more polishing elements configured to detach material from the capsular bag.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
12.
Adaptive Vacuum Booster for Phacoemulsification Operations
A phacoemulsification system and a method for controlling a surgical system, the method including: providing an ophthalmic surgical system comprising: a phacoemulsification probe having a needle at a distal end and an ultrasonic transducer, wherein the needle is configured to be inserted into an eye of a patient; an aspiration line, wherein the aspiration line is fluidly coupled with the needle; an aspiration pump; a control device configured for a user to control the aspiration pump; and a processor; obtaining a value of intraocular pressure (IOP) within the eye; receiving a trigger from a user of the ophthalmic surgical system; and in response to receiving the trigger, operating the aspiration pump at a higher aspiration rate, for a period of time, wherein the period of time is determined in accordance with the value of the IOP.
An apparatus to control laser energy for ophthalmic surgery is disclosed. The apparatus may include a laser source configured to generate a laser beam. The apparatus may also include a beam shaping apparatus having a rotatable element positioned in a path of the laser beam. The rotatable element may have a plurality of apertures and may be rotatable about an axis of rotation. Further, the apparatus may include a control unit configured to generate one or more frequency pulse trains. In addition, the apparatus may include a motor configured to rotate the rotatable element to align one of the plurality of apertures with the path of the laser beam for changing or modifying a characteristic of the laser beam. The motor may be driven based on the one or more frequency pulse trains.
A phacoemulsification device includes a phacoemulsification probe and a processor. The phacoemulsification probe includes a piezoelectric crystal configured to vibrate in response to a drive signal, a needle configured to be inserted into a lens capsule of an eye and to be vibrated by the piezoelectric crystal, and a set of magnetic-field components. The set includes (i) one or more magnetic-field generators configured to generate a magnetic field, and (ii) one or more magnetic-field sensors configured to sense the magnetic field. At least one of the magnetic-field components is coupled to vibrate with the needle and at least one other of the magnetic-field components is isolated from vibration of the needle, thereby causing the magnetic-field sensors to output signals indicative of the vibration. The processor is configured to adaptively adjust a frequency of the drive signal so as to vibrate the needle at a resonant frequency of the piezoelectric crystal.
Systems and methods for streaming video content relating to an ophthalmic surgical procedure are provided herein. A method includes receiving video content captured from a video source during the ophthalmic surgical procedure and receiving overlay information. A method includes sending at least a portion of the video content and the overlay information to a processing device configured to provide a video stream enhancement application, and receiving image enhancement information from the processing device. A method includes processing the video content based on the received image enhancement information to produce an enhanced video stream including an overlay representing at least at portion of the overlay information and sending, using a communication interface, the enhanced video stream to one or more receive devices configured to display the enhanced video stream.
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
Disclosed are co-polymers which are produced from reactive monomer mixtures and which have both high refractive index and a high Abbe number. These materials are well suited for use as implantable ophthalmic devices and have a refractive index which may be edited through application of energy. When used for an intraocular lens, the high refractive index allows for a thin lens which compresses to allow a small incision size.
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
A luer fitting that included a body having a proximal region, a distal region, and a length therebetween. The body includes: a recessed region within a portion of the length of the body at the proximal region, the recessed region having a proximal end opening, an inner back wall and an inner circumferential sidewall; a barb extending proximally from the inner back wall; and a passage between a first opening at the distal region of the body to a second opening at a proximal end of the barb, the passage forming an inner surface and having a first inner diameter at or near the first opening at the distal region opening that is greater than a second inner diameter at or near the inner back wall of the recessed region, wherein the transition between the first inner diameter and the second inner diameter is curvilinear.
An example lens management device can include a sleeve, a modular cartridge configured to house a lens, and a tray configured to transition from a first position to a second position. The tray can include a first tray component configured to removably hold the modular cartridge, and a second tray component movably attached to the first tray component. The modular cartridge can be configured to house the lens in a third position when the tray is in the first position, and in a fourth position when the tray is in the second position, the fourth position being distal to the third position. Transitioning the tray from the first to the second position causes the sleeve to enter into the modular cartridge such that the distal tip of the sleeve is positioned to engage with the lens and move the lens from the third position to the fourth position.
Apparatus for determining a fluid flow rate in a channel of a phacoemulsification probe, including a first pressure sensor, coupled with fluid in the channel at a first position. A second pressure sensor couples with the fluid in the channel at a second position, at a preset distance from the first position, and the fluid flows from the first to the second position. A processor acquires from the first pressure sensor first indications of a pressure profile of a portion of the fluid passing the first pressure sensor, and acquires from the second pressure sensor second indications of a pressure profile of the fluid passing the second pressure sensor. The processor correlates the first and second indications to determine a time for the fluid portion to travel from the first to the second position, and calculates the fluid flow rate in response to the time and the preset distance.
G01F 1/36 - Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure the pressure or differential pressure being created by the use of flow constriction
G16H 40/63 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for local operation
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
20.
Surgical system priming with pressure calibration utilizing handpiece orientation
A phacoemulsification system and a method are described. The system including: a handpiece having a needle and a sleeve at a distal end and an orientation detection unit; an irrigation module configured to supply irrigation fluid into the eye; an aspiration module configured for aspiring eye fluid; a priming cover for fitting over the distal end of the handpiece during a priming process; external pressure sensors coupled with the priming cover; one or more sensors for monitoring at irrigation and spiration pressure; and a processor configured to operate in a priming process. The priming process includes operating the irrigation module to fill the irrigation channel with fluid and remove air bubbles. The one or more processors are configured for obtaining calibration pressure data from the external pressure sensors and orientation data from the orientation detection unit and for calibrating the sensors of the system in accordance with orientation data.
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 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
21.
System and method for detection of cornea collapse
A system and method for use in eye surgery. The system includes at least one light source, a detection unit, and a detection circuit. The at least one light source is configured and operable to emit one or more illumination beams directed at a region of a corneal surface of a patient's eye. The detection unit includes an arrangement of light detectors positioned for collecting a reflected beam reflected from the region of the corneal surface of the patient's eye. The detection circuit is configured for collecting and analyzing a detection signal from the detection unit, and for detecting variations of the reflected beam pattern over time indicative of surface curvature changes of the corneal surface region. In response to detecting surface curvature change exceeding a predefined threshold, the detection circuit generate a response signal triggering operation of an anti-vacuum surge (AVS) mechanism.
A method, ophthalmic surgical system, and a computer program product for assessing and providing a clinical index during an ophthalmic procedure performed on a patient, the method including: providing an ophthalmic surgical system and at least one sensor coupled with the ophthalmic surgical system for sensing a parameter within an eye of the patient; obtaining a first sequence of measured values, the first sequence of values indicating measurements taken by the at least one sensor at a plurality of points in time during the medical procedure; assessing the clinical index based at least on a function of the first sequence of measured values, the function involving a deviation of each value of the first sequence of measured values from a target; and providing to a user of the medical system an indication of the clinical index.
A61B 17/00 - Surgical instruments, devices or methods
A61B 90/00 - Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups , e.g. for luxation treatment or for protecting wound edges
G16H 50/30 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for calculating health indicesICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for individual health risk assessment
23.
Control of Irrigation in a Phacoemulsification System
A phacoemulsification system includes a handpiece, an irrigation module, an aspiration module, circuitry, and a processor. The handpiece includes a piezoelectric element and a needle. The needle is configured to be inserted into an eye and to be vibrated by the piezoelectric element to emulsify a lens of the eye. The irrigation module is configured to supply a flow of irrigation fluid to the eye based on respective values of at least one control parameter. The aspiration module is configured for aspiration of material from the eye. The circuitry is configured to determine a difference between the flow of irrigation fluid to the eye and an aspiration flow of the material from the eye. The processor is configured to set respective values of the at least one control parameter based on the determined difference and to provide the control parameter value(s) to the irrigation module.
A phacoemulsification system and a corresponding method are described. The system having a handpiece having a needle and a sleeve at a distal end to emulsify a lens of an eye; an irrigation module configured to supply irrigation fluid into the eye; an aspiration module configured for aspiring eye fluid; a priming cover for fitting over the distal end of the handpiece during a priming process; external pressure sensors coupled with the priming cover; one or more sensors for monitoring at least one of an irrigation pressure and an aspiration pressure; and a processor configured to operate in a priming process. The priming process includes operating the irrigation module to fill the irrigation channel with fluid and remove air bubbles. The one or more processors are configured for obtaining calibration pressure data from the external pressure sensors and for calibrating the sensors of the system.
A61B 17/00 - Surgical instruments, devices or methods
A61B 90/00 - Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups , e.g. for luxation treatment or for protecting wound edges
A phacoemulsification system and method, the system having a probe with a needle at its distal end, the needle configured to be inserted into a patient's eye, the probe having an ultrasonic transducer; an aspiration line fluidly coupled with the needle; an AVS system configured to control fluid flow in the aspiration line; and a processor, configured to: obtain a first set of images having a first image depicting a part of the needle and a particle of a lens of the eye occluding an aspiration line of the needle; obtain a second image depicting the part of the needle, the second image captured later than the first image; determine based on the first image and the second image whether an aspiration-stopping criteria is met; and subject to the aspiration-stopping criteria being met, control the AVS system to restrict fluid flow along the aspiration line.
A method for validating selection of a tip type for a tip of a handpiece of an ophthalmic instrument, the method includes storing a definition of multiple tip types and multiple respective visual properties of the tip types. An image of the tip is acquired by a camera during a medical procedure using the ophthalmic instrument. An actual visual property of the tip is identified in the acquired image. Based on the stored definition of the multiple tip types and the multiple respective visual properties, it is determined whether the actual visual property of the tip matches a specified tip type intended for the medical procedure. A responsive action is taken in case of a mismatch between the actual visual property and the specified visual property.
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 90/20 - Surgical microscopes characterised by non-optical aspects
A61B 90/92 - Identification means for patients or instruments, e.g. tags coded with colour
G06V 10/75 - Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video featuresCoarse-fine approaches, e.g. multi-scale approachesImage or video pattern matchingProximity measures in feature spaces using context analysisSelection of dictionaries
Phacoemulsification apparatus having a phacoemulsification probe that has a needle with a distal tip configured to be inserted into an eye lens, the needle having a lumen. The probe has an actuator configured to vibrate the needle, an aspiration channel, coupled with the lumen and configured to convey an emulsified particle of the lens as aspiration fluid, and an aspiration sensor, coupled with the aspiration channel and configured to measure a vacuum level within the aspiration channel. A microscope is configured to capture an image of the distal tip and of the emulsified particle. A processor is configured to provide an analysis of the image, and, in response to the analysis, when the emulsified particle is in contact with the distal tip for at least a preset time period while the vacuum level is below a predetermined threshold, energize the actuator with a pulse of energy.
A61F 9/008 - Methods or devices for eye surgery using laser
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A surgical system includes a replaceable surgical cassette that is configured to be received by a surgical console, the surgical cassette permitting fluid flow through the cassette, the surgical system controlling the flow of fluid through the cassette via one or more flexible valves actuated by one or more actuation plungers located on the surgical console. The one or more flexible valves of the surgical cassette and the one or more actuation plungers of the surgical console include a positioning feature configured to assist with positioning the one or more actuation plungers to apply uniform and symmetric pressure to the one or more valves during actuation.
A47B 81/00 - Cabinets, racks or shelf units specially adapted for other particular purposes, e.g. for storing guns or skis
A61B 3/16 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for measuring intraocular pressure, e.g. tonometers
A61F 9/008 - Methods or devices for eye surgery using laser
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A wrench assembly for attachment and removal of a tip to a handpiece of a surgical system includes a core and a shell including a central portion that defines a central bore. In various embodiments, the core includes an outer portion fixedly coupled to the shell and an inner portion configured for insertion into the central bore. The inner portion is removably coupled to the outer portion by a separation mechanism configured to facilitate separation of the inner portion from the outer portion at a predetermined torque.
A system for managing phacoemulsification surgery having a cassette with at least one pressure sensor and at least one fluid channel, wherein the at least one pressure sensor is fluidly coupled with the at least one fluid channel. The surgical console also having a controller and a cassette receiving area, for engaging with the cassette, wherein the controller is configured to compare at least one pressure measurement from the at least one pressure sensor to at least one predetermined value indicative of an identifiable cassette type.
A61B 34/00 - Computer-aided surgeryManipulators or robots specially adapted for use in surgery
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A phacoemulsification probe includes a distal end, an aspiration channel, and an anti-vacuum surge (AVS) module. The distal end is configured for insertion into an eye of a patient. The aspiration channel is coupled with the distal end for evacuating material from the eye. The AVS module includes (i) a disposable portion, which is detachably coupled with the aspiration channel, and comprises a valve part configured to be moved to regulate flow in the aspiration channel, and (ii) a reusable portion, which is configured to move the valve part in response to one or more command signals.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
An apparatus, system and method for a phacoemulsification handpiece. Included are: at least a first segment having a longitudinal axis, and a first end and a second end, wherein at least aspiration, irrigation and power inputs enter the first end; a second segment along the longitudinal axis and comprising, at a distalmost portion thereof from the first segment, a needle powered by the power input, an aspiration output, and an irrigation output; a rotating coupler capable of coupling the second end of the first segment and the second segment to enable independent axial rotation about the longitudinal axis of the first segment from the second segment; and a plurality of flexible tubing passing substantially along the longitudinal axis within both the first segment and the second segment. The plurality of flexible tubing flexes within the first and second segments and within the rotating coupler so as not to bind during the independent axial rotation.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A61B 17/00 - Surgical instruments, devices or methods
A phacoemulsification valve for controlling flow of eye fluid, consisting of an enclosure, a first lumen within the enclosure, having a first and a second termination, a second lumen within the enclosure, intersecting the first lumen, so that the first lumen separates the second lumen into a first and a second section, and a pin, that slides within the first lumen between a first position, wherein the pin prevents transfer of the eye fluid between the first and second sections and a second position, wherein the pin permits transfer of the eye fluid between the first and second sections. The valve also includes a first coil, proximate to the first termination, which when energized transfers the pin between the first and second positions, and a second coil, positioned in proximity to the second termination, which when energized transfers the pin between the second and first positions.
An anti-vacuum surge (AVS) cartridge includes a solenoid valve with a magnetic plunger having parallel flattened surfaces, in a valve cavity of a rectangular or other similar cross section. The flattened surfaces of the plunger are oppositely disposed from each other and are in line with the flow path through the aspiration channel of the AVS cartridge.
F16K 3/26 - Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
F16K 31/08 - Operating meansReleasing devices electricOperating meansReleasing devices magnetic using a magnet using a permanent magnet
F16K 37/00 - Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
An apparatus includes a base, including two motors and a mechanical coupling mechanism, and a cartridge shaped to define two stators and respective pairs of ports in fluidic communication with the stators. The cartridge is removably insertable into the base and includes two rotors disposed, respectively, within the stators. The mechanical coupling mechanism is configured to mechanically couple the rotors to the motors, respectively, such that, following insertion of the cartridge into the base, the motors rotate the rotors, thereby pumping fluid through the pairs of ports. Other embodiments are also described.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
F04B 9/02 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
F04B 15/00 - Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
F04C 2/107 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
F04C 11/00 - Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston typePumping installations
F04C 15/00 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups
A phacoemulsification simulation apparatus includes a trigger device, at least two sensors, and a processor. The trigger device configured to apply, to fluid at an inlet of a needle of a phacoemulsifier, a pressure profile as a function of time in response to an input waveform. The at least two sensors are configured to measure a pressure of the fluid at respective points in the phacoemulsification simulation apparatus. The processor is configured to (a) drive the trigger device with the input waveform, thereby causing the trigger device to apply the pressure profile to the inlet while the fluid is aspirated via an aspiration line, (b) receive measurements of the pressure of the fluid from the at least two sensors, and (c) analyze an aspiration performance of the phacoemulsifier in response to the measurements.
A61B 17/00 - Surgical instruments, devices or methods
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A phacoemulsification apparatus includes an ultrasound transmitter, an irrigation-aspiration tool, a robotic arm, and a processor. The ultrasound transmitter is configured to generate and focus an ultrasound beam into a lens capsule of an eye of a patient, to emulsify a lens of the eye. The irrigation-aspiration tool having a distal end including an outlet of an irrigation channel for flowing irrigation fluid into the lens capsule, and an inlet of an aspiration channel for removing material from the lens capsule. The robotic arm is configured to move the distal end of the irrigation-aspiration tool inside the lens capsule. The processor is configured to control the ultrasound transmitter to irradiate one or more target locations in the eye capsule with the focused ultrasound beam, and control the robotic arm to move the distal end of the irrigation-aspiration tool in coordination with the target locations irradiated by the ultrasound transmitter.
A system, method and computer program product, the system comprising: a phacoemulsification probe having a needle at its distal end, the needle configured to be inserted into an eye of a patient; a pressure sensor, and a processor, configured to repeatedly: obtain a plurality of pressure values taken by the pressure sensor, each of the plurality of pressure values indicating an intraocular pressure (IOP) measurement taken during a surgical procedure; calculate an overall measurement for the surgical procedure based on the pressure values; and displaying on a display device a graphic representation of the overall measurement.
A surgical system for the treatment of ocular problems including a surgical cassette, a surgical console operatively coupled to the surgical cassette and further including a processor, a vacuum source positioned in-line with a vacuum regulator and a mass air flow controller, and a tank fluidly connected to the mass air flow controller, wherein the processor is configured to calculate an air flow set point in accordance with a received at least one user-defined fluid flow rate set point; and wherein the mass air flow controller modulates air flow from the tank to the vacuum source in accordance with the received the air flow set point to meet a user-defined fluid flow rate.
Systems and methods for sensing tissue in a phacoemulsification procedure are provided herein. A method may include generating a sensing signal through a frequency range centered at a local resonant frequency of an ultrasonic handpiece and measuring impedance characteristics of the signal at a distal end of a needle of an ultrasonic handpiece. A method may further include comparing the measured impedance characteristics of the generated sensing signal with one or more stored impedance profiles. A method may further include classifying, based on the comparison between the measured impedance characteristics and the stored one or more impedance profiles, a medium contacting the distal end of the needle. A method may further include controlling an output of the ultrasonic handpiece based on the classification of the medium contacting the tip of the needle.
A system for delivering an intraocular lens (IOL) is disclosed, including: a handpiece including a barrel defining an elongate passage, a pushrod disposed inside the elongate passage, and a plunger coupled to the pushrod; and a delivery unit coupled to a first end of the barrel, the delivery unit including a delivery tube and a lens holder coupled to the delivery tube, the lens holder including a lead haptic shelf arranged to receive a lead haptic of an IOL that is contained inside the lens holder, wherein the lead haptic shelf is configured to fold the lead haptic of the IOL over a body of the IOL while permitting the IOL to travel under the lead haptic shelf when the IOL is displaced from the lens holder to the delivery tube by the pushrod during delivery of the IOL into a patient's eye.
Phacoemulsification apparatus, consisting of a phacoemulsification probe having a distal end including a combination of a needle and a sleeve, the combination being configured for insertion into an eye of a patient, and being configured for fluid transfer between the eye and the combination. The apparatus has an ultrasound actuator configured to vibrate the needle, a first sensor configured to output a first indication indicative of physical contact between the needle and a lens of the eye, and a second sensor configured to output a second indication indicative of a parameter associated with the fluid transferred by the combination. A microcontroller is configured to receive the first and the second indication, to calculate a threshold for the first indication in response to the second indication, and to activate and deactivate the ultrasound actuator in response to the first indication crossing the threshold.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
43.
SYSTEM AND METHOD FOR REMOVAL OF CORNEAL SPECULAR REFLECTIONS IN EYE IMAGING
Methods and devices are disclosed for pulsed LED illumination, image capture processing to remove corneal specular reflections in torsion images for iris registration. A system may first and second infrared LED light sources and a torsion camera to capture images during illumination of a patient's eye based on a pulsed synchronization signal. Within a period of time, a first image is captured having a reflection from the first LED light source and then a second image is captured having a reflection from the second LED light source. The first and second images are processed to remove respective areas having corneal specular reflections and combined into a third image not including any specular reflections. Various embodiments are disclosed including implementations with excimer and femtosecond laser eye surgery platforms.
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 90/30 - Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
A61F 9/008 - Methods or devices for eye surgery using laser
A needle for use with a phacoemulsification handpiece is disclosed. The needle may compromise an elongated needle body having a proximal end and a distal end terminating at a junction point; a first tine having a proximal end and a distal end terminating in a first tip; a second tine having a proximal end and a distal end terminating in a second tip, wherein the proximal end of the first tine and the proximal end of the second tine are each connected at the junction point.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
45.
PHACOEMULSIFICATION VACUUM SURGE DETECTION WITH CORRELATED VACUUM AND PRESSURE READINGS
A method includes calculating in real-time a correlation between vacuum readings and pressure readings of respective aspiration and irrigation channels of a phacoemulsification handpiece engaged in a phacoemulsification procedure in an eye. Upon detecting an increase in the vacuum readings and an increase in the pressure readings, a current level of the correlation is checked. Provided that the current level of the correlation is above a given value, an anti-vacuum surge (AVS) mechanism is activated, the AVS mechanism fluidly coupled with at least one of the irrigation and aspiration channels.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
Disclosed are hydrophobic, acrylic materials having both high refractive index and a high Abbe number. The materials may have an internal wetting agent, are well suited for use as implantable ophthalmic devices, and have a refractive index which may be edited through application of energy. When used for an intraocular lens, the high refractive index allows for a thin lens which compresses to allow a small incision size.
C08L 33/26 - Homopolymers or copolymers of acrylamide or methacrylamide
C08L 39/06 - Homopolymers or copolymers of N-vinyl-pyrrolidones
C08L 83/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
G02B 1/00 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
A system includes an ocular surgical handpiece including an irrigation conduit. The system further includes an irrigation tube, configured to establish fluidic communication between a supply of irrigation fluid and the irrigation conduit, such that the irrigation fluid flows distally from the supply, via the irrigation tube and the irrigation conduit, to an eye of a patient. The system further includes a pressure regulator, configured to regulate an intraocular pressure of the eye by regulating the flow of the irrigation fluid within the irrigation conduit, within the irrigation tube, or between the irrigation conduit and the irrigation tube. Other examples are also described.
A system includes an anti-vacuum surge (AVS) mechanism and a processor. The AVS mechanism is configured to suppress a vacuum surge during the phacoemulsification procedure. The processor is configured to (i) during the phacoemulsification procedure, receive pressure readings from one or more sensors, (ii) using the pressure readings, estimate an occurrence of a vacuum surge, and (iii) upon estimating the occurrence of the vacuum surge, activate the AVS mechanism in a predefined pulsed manner to suppress the vacuum surge.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
An apparatus includes a compressor, which is configured to compress air and includes an input port and an output port, an output conduit coupled with the output port and configured to receive the air from the compressor, an input conduit coupled with the input port, a switching valve coupled with the output conduit and with the input conduit, and configured to couple a pneumatic surgical cutting tool, alternatingly, with the output conduit and with the input conduit, and a supply conduit coupled with the input conduit and configured to supply the air, to the input conduit, from a surrounding environment. The supply conduit includes a one-way valve configured to inhibit the air from escaping from the input conduit to the surrounding environment when the compressor is idle. Other examples are also described.
A phacoemulsification system and an operation method thereof, the system including a handpiece having a piezoelectric element and a needle, wherein the needle is configured to be inserted into an eye and to be vibrated by the piezoelectric element to emulsify a lens of the eye; an irrigation module configured to supply a flow of irrigation fluid into the eye; an aspiration module configured for removing material from the eye; image capturing means for acquiring images which include the eye; an image analysis module configured to determine whether at least a distal tip of the needle is present in the captured images; and a processor, which is configured to receive a determination from the image analysis module as to whether the distal tip of the needle is present in the captured images, and to control operation of at least the irrigation module according to the determination.
A phacoemulsification system, comprising: a handpiece comprising a piezoelectric element and a needle, the needle configured to be inserted into an eye and to be vibrated by the piezoelectric element to emulsify a lens of the eye; an irrigation module configured to supply a flow of irrigation fluid into the eye; an aspiration module configured for removing material from the eye; circuitry configured to determine whether at least a distal tip of the needle is inside the eye or is outside the eye; and a processor, which is configured to receive a determination from the circuitry as to whether the distal tip of the needle is inside or outside the eye, and to control operation of at least the irrigation module according to the determination.
A phacoemulsification system, including a probe having an irrigation channel and an aspiration channel, and a distal end including a needle and a sleeve insertable into an eye. There is an irrigation pump pumping irrigation fluid via the irrigation channel into the eye, and an aspiration pump pumping aspiration fluid via the aspiration channel from the eye. A first pressure sensor is coupled with the irrigation fluid and provides a first signal of intraocular pressure (IOP) in the eye; a second pressure sensor is coupled with the aspiration fluid and provides a second signal of the IOP. A system processor receives the first and second signals, and responsively to at least one of the signals, identifies at least one frequency and an associated at least one phase of the IOP, and pumps at least one of the pumps at the identified frequency and in antiphase to the identified phase.
A system for learning actual phacoemulsification energy setpoints at the time of occlusion breaks during ophthalmic surgery. Phacoemulsification energy setpoints may be recorded over different periods of time, such as during current cases and over a lifetime of cases. The recorded data would then be used to determine future phacoemulsification energy setting amounts.
A61B 17/00 - Surgical instruments, devices or methods
A61B 34/00 - Computer-aided surgeryManipulators or robots specially adapted for use in surgery
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
An apparatus for mechanically coupling a motor to a rotor includes an outer ring including an inner surface shaped to define multiple recesses, an inner ring disposed within the outer ring and shaped to define multiple compartments having respective outer openings, which face the outer ring, and respective inner openings opposite the outer openings, and multiple gripping elements disposed within the compartments, respectively. The inner ring is configured to receive the rotor while the compartments are aligned with the of recesses, by virtue of the gripping elements sitting at least partially within the recesses. The outer ring is configured to couple with a shaft coupled with the motor such that rotation of the shaft by the motor causes the compartments to become misaligned with the recesses, thereby causing the outer ring to push the gripping elements, through the outer openings, against the rotor, through the inner openings.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
F16D 15/00 - Clutches with wedging balls or rollers or with other wedgeable separate clutching members
F16D 41/067 - Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by rolling and having a circular cross-section, e.g. balls all members having the same size and only one of the two surfaces being cylindrical and the members being distributed by a separate cage encircling the axis of rotation
55.
Controlling vibration patterns of a phacoemulsification needle
A system includes a needle, an actuator assembly and a generator. The needle is configured to be vibrated so as to emulsify a lens of an eye. The actuator assembly, includes a first actuator, a second actuator and a third actuator, which are distributed around a longitudinal axis of the needle and are configured to vibrate along the longitudinal axis in response to a first driving signal, a second driving signal and a third driving signal, respectively. The generator is configured to generate the first driving signal, the second driving signal and the third driving signal, so as to vibrate the needle in accordance with a predefined pattern.
A phacoemulsification system, method and computer program product, the system comprising: a phacoemulsification probe having at its distal end a needle to be inserted into an eye, the probe comprising an ultrasonic transducer; an optical fiber transferring light from a source and having a distal end positioned in proximity to the tip of the needle for emitting light of predetermined frequency or pattern; a light sensor for detecting the light; and a processor, for repeatedly: receive from the sensor an indication of the detected light; determine whether the detected light complies with a condition indicating contact between the needle and a lens of the eye; subject to determining compliance with the condition and that the ultrasonic transducer being inactive, toggle the ultrasonic transducer ON; and subject to determining that the detected light does not comply with the condition and that the ultrasonic transducer being active, toggle the ultrasonic transducer OFF.
Disclosed are co-polymers which are produced from reactive monomer mixtures and which have both high refractive index and a high Abbe number. These materials are well suited for use as implantable ophthalmic devices and have a refractive index which may be edited through application of energy. When used for an intraocular lens, the high refractive index allows for a thin lens which compresses to allow a small incision size.
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
A phacoemulsification probe includes an irrigation sleeve configured to fit over a hollow aspiration needle and a probe body, the irrigation sleeve to provide a fluid pathway for the flow of irrigation fluid between the needle and the walls of the irrigation sleeve, the sleeve having a distal end insertable into an incision made in an eye, the distal end having ports to release said irrigation fluid into said eye, where the walls of the irrigation sleeve have at least one anti-tortional element longitudinally placed along a length of the irrigation sleeve to provide structural support to prevent twisting of the sleeve and where the at least one anti-tortional element allows flattening of the irrigation sleeve for maneuvering of the sleeve within the eye while preserving the integrity of the incision.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A phacoemulsification system includes a phacoemulsification probe, an aspiration tube and an irrigation tube. The aspiration tube is connectable to the phacoemulsification probe to aspirate a cataract from an eye. The irrigation tube is connectable to the probe and, in one embodiment, has at least one integrated compliant tube section at an end near the phacoemulsification probe. Each integrated compliant tube section is less than 1% of the length of the irrigation tube, has a section diameter larger than a tube diameter of the irrigation tube, and is more compliant than a cornea of the eye. In another embodiment, a compliant tube section is connectable to an end of the irrigation tube and to the probe and is formed of a material more compliant than the irrigation tube.
Disclosed are compositions which are produced from reactive monomer mixtures and which have both high refractive indexes and high Abbe numbers. These materials are well suited for use as implantable ophthalmic devices and have a refractive index which may be edited through the application of energy. When used for an intraocular lens, the high refractive index allows for a thin lens which compresses easily through a small incision. Some compositions are suitable for use as intraocular lenses, phakic intraocular lenses, contact lenses, orthokeratology lenses, rigid gas permeable lenses, corneal inlays, corneal outlays, or corneal inserts.
A method for assembling a vitrector, including: providing a distal housing portion for the vitrector, a transmission unit driving a needle into oscillation, an assembly pin to be inserted into the transmission unit to fix the needle in position, and a needle casing, having a lumen, the casing enclosing the needle within the lumen. The transmission unit is fixed to the distal housing portion, and the assembly pin is inserted into the transmission unit to fix a distal tip of the needle at a most distal position of the oscillation. The transmission unit is inserted, with the assembly pin inserted, to a predetermined position in the distal housing portion. The casing is inserted into the distal housing portion so that the distal tip butts a termination of the casing. The casing is fixed to the distal housing portion, and the assembly pin is removed from the transmission unit.
Methods and systems provide a disposable cutting section which is removably attachable from a multiple use motor section, to form a handpiece for use in ophthalmic procedures, such as vitrectomies. The motor section includes a motor for driving a needle of the cutting section.
A phacoemulsification system includes a phacoemulsification probe and a processor. The phacoemulsification probe has a distal end configured for insertion into an eye of a patient, the probe including (i) an irrigation channel for irrigating the eye with irrigation fluid, (ii) an aspiration channel for evacuating material from the eye, and (iii) at least one sensor array fluidly coupled to at least one of the irrigation channel and the aspiration channel, the at least one sensor array comprising multiple sensors configured to measure a parameter indicative of fluid pressure in the irrigation channel or the aspiration channel. The processor is configured to regulate at least one of irrigation flow and aspiration flow using the measured parameter.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
64.
STABILIZING INTRA-OCULAR PRESSURE AT ONSET OF ASPIRATION
A pumping system for a phacoemulsification system, consisting of: a phacoemulsification probe, an irrigation tube providing irrigation fluid into an eye, an irrigation pump pumping the irrigation fluid, an aspiration tube conveying aspiration fluid from the eye, an aspiration pump pumping the aspiration fluid from the eye, an aspiration pump sensor providing a first signal indicating activation of the aspiration pump, and a pressure sensor providing a second signal indicating intraocular pressure (IOP) in the eye. A controller receives the first signal and second signals, and in response controls the irrigation pump to alter a registered flow rate of the irrigation fluid to a preset adjusted flow rate until a threshold, dependent on at least one of a time of operation of the irrigation pump at the preset adjusted flow rate and the second signal, is crossed. When crossed the irrigation fluid is pumped at the registered flow rate.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A system includes a user interface and a processor. The user interface is configured to receive a user-selected confidence level of measurement of intraocular pressure (IOP) for detecting vacuum surge in a phacoemulsification system. The processor is configured to (i) based on the user-selected confidence level, calculate a number of IOP readings needed during phacoemulsification procedure to identify an imminent vacuum surge, (ii) during the phacoemulsification procedure, receiving sensor readings of IOP, (iii) upon reaching the calculated number of the readings, estimate whether a consistent drop in IOP occurred between the readings, and (iv) upon estimating a consistent drop in IOP, activate an anti-vacuum surge (AVS) mechanism to mitigate the imminent vacuum surge.
A medical visualization apparatus includes two or more imaging devices and a processor. The two or more imaging devices are configured to acquire speckle images of an organ of a patient from multiple different directions. The processor is configured to (a) generate from the speckle images a three-dimensional (3D) point cloud of locations, (b) generate from the 3D point cloud of locations a 3D map of an anatomical surface of the organ, and (c) display the 3D map of the anatomical surface according to a requested gazing direction relative to the organ.
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
Surgical apparatus, including a needle configured to be inserted into an organ of a human subject, a counterweight, and a needle driver. The needle driver includes a cylindrical cam configured to rotate about a cam axis and having a curved circumferential groove extending around a radial surface of the cam. There is a motor coupled to rotate the cylindrical cam about the cam axis. A first follower is mounted to travel in the groove at a first azimuthal location and is coupled to the needle so as to cause the needle to oscillate at a predefined frequency parallel to the cam axis as the cam rotates. A second follower is coupled to the counterweight and is mounted to travel in the groove at a second azimuthal location selected so as to cause the counterweight to oscillate parallel to the cam axis in antiphase to the needle.
In one exemplary mode, a phacoemulsification system includes a phacoemulsification probe to be inserted into an eye, an irrigation line to provide irrigation fluid into the eye, an aspiration line to convey aspiration fluid from the eye, an aspiration pump to pump the aspiration fluid from the eye, a pump controller to control a flow direction and rate of the aspiration pump, and an aspiration rate user input device to provide a signal indicative of user actuation of the aspiration rate user input device, wherein the pump controller is configured to receive the signal provided by the aspiration rate user input device, and reverse the flow direction and set the flow rate of the aspiration pump at which to pump the aspiration fluid into the eye, the flow rate in the reverse flow direction being set responsively to an actuation rate at which the aspiration rate user input device is actuated.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
An apparatus includes a proximal shaft configured to mechanically couple to a motor, a first universal joint, a middle shaft coupled to the proximal shaft via the first universal joint, a housing having a bore, a second universal joint within the bore, a distal shaft coupled to the middle shaft via the second universal joint, and a connector disposed over the distal shaft. The bore limits a downward tilt of the distal shaft such that, as a rotor approaches the distal shaft, the distal shaft becomes axially aligned with the rotor by virtue of the proximal end of the rotor entering the connector or vice versa. A spring connected proximally to the connector and distally to the second universal joint is configured to decompress, thereby reversibly coupling the connector to the proximal end of the rotor, upon the motor rotationally aligning the connector with the proximal end of the rotor.
A phacoemulsification system including a phacoemulsification probe having a probe body, a horn disposed at least partially in the probe body, a needle coupled with the horn and configured to be inserted into an eye, and a piezoelectric actuator disposed in the probe body and configured to vibrate the horn and the needle in a first direction with a stroke length with respect to the probe body; a signal generator configured to generate a drive signal to drive a vibration of the piezoelectric actuator; a stroke measurement apparatus configured to provide indications of the stroke length of the needle over time; and a controller configured to dynamically adjust a frequency of the drive signal so as to maximize the stroke length and maintain mechanical resonance of the needle responsively to the provided indications of the stroke length.
A61B 17/00 - Surgical instruments, devices or methods
A61B 90/00 - Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups , e.g. for luxation treatment or for protecting wound edges
71.
REDUCING INTRAOCULAR PRESSURE (IOP) FLUCTUATIONS DURING PHACOEMULSIFICATION
A phacoemulsification method includes specifying a target intraocular pressure (IOP) level to be maintained in an eye of a patient during a phacoemulsification procedure. A phacoemulsification probe is inserted into the eye. The eye is irrigated with irrigation fluid and material is aspired from the eye while aiming to maintain the target IOP level, including controlling IOP fluctuations by (i) when an actual IOP in the eye is in a defined high range, limiting the IOP fluctuations to a given value, and (ii) when the actual IOP is in a defined low range that is lower than the high range, allowing the IOP fluctuations to exceed the given value.
In one exemplary mode, a phacoemulsification system includes a phacoemulsification probe, an irrigation tube to provide irrigation fluid into an eye, an irrigation pump to pump irrigation fluid into the eye, an aspiration tube convey aspiration fluid from the eye, an aspiration pump to pump the aspiration fluid from the eye, a sensor to provide a signal indicative of current intraocular pressure in the eye, and a pump controller to receive the signal provided by the sensor, compute a value of intraocular pressure at a future time responsively to the provided signal and an indicator of change in the intraocular pressure over time, and control the irrigation pump to adjust a flow rate of the irrigation fluid to maintain the intraocular pressure at a given intraocular pressure responsively to the computed value of the intraocular pressure at the future time.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A phacoemulsification system, method and computer program product, the system comprising: a phacoemulsification probe having a needle at its distal end, the needle configured to be inserted into an eye of a patient, the probe comprising an ultrasonic transducer; a signal generator, meter, and impedance determination module for determining an impedance between a tip of the needle and an electrode attached to the patient; and a processor, configured to repeatedly: obtain the impedance from the impedance detector; subject to the impedance complying with a condition and the ultrasonic transducer being inactive, toggling the ultrasonic transducer to transmit ultrasonic waves; and subject to the impedance not complying with a condition and the ultrasonic transducer being active, toggling the ultrasonic transducer to stop transmitting ultrasonic waves.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
Described are implementations of systems and methods for an improved machine learning-based system that incorporates pre-operative and intraoperative measurements captured during surgery, as well as additional patient-specific data, to provide an individualized, highly accurate post-operative manifest refraction prediction. According to some embodiments, a determination engine generates a predictive feature set of one or more predictors associated with diagnostic measurements of one or more eyes and performs a recursive selection operation using one or more combinations within the predictive feature set and one or more models to produce a most predictive subset, the most predictive subset having a highest prediction accuracy among other predictive subsets for post-operative manifest refraction. The determination engine generates a determination model by refining and retraining the one or more models of the recursive selection operation utilizing the most predictive subset.
A61B 3/107 - Objective types, i.e. instruments for examining the eyes independent of the patients perceptions or reactions for determining the shape or measuring the curvature of the cornea
A61B 3/00 - Apparatus for testing the eyesInstruments for examining the eyes
A61B 34/10 - Computer-aided planning, simulation or modelling of surgical operations
A method for providing automatic placement of a lens in a cartridge is provided. The method includes seizing, by a nozzle head of a lifting tool, the lens from a pick position of a platform based on an air flow through the nozzle head and depositing, by the lifting tool, the lens at a delivery point in the cartridge by changing the air flow through the nozzle head. The method includes determining, by a processor coupled to the lifting tool, a location of a haptic of the lens with respect to a feature of the cartridge. The method includes adjusting, by the lifting tool, the haptic from the location to a target orientation on the cartridge when the location of the haptic is determined to be misaligned with the feature. The method can be implemented as an apparatus, a system, and/or a computer program product.
Disclosed herein is a one-piece intraocular lens holder that may contain an interocular lens. The one-piece holder comprises a first portion, a second portion, and at least one integral hinge that connects the first portion to the second portion, wherein one portion comprises an integral annular support that accommodates an intraocular lens and the other portion comprises an integral adaptive feature that exerts a force on the intraocular lens when the intraocular lens is positioned on the integral annular support and the two portions are in a closed position.
A pneumatic cross-connect proportional valve provides the capability to calibrate pressure and vacuum sensors in a surgical cassette associated with a surgical console. Calibration of non-invasive pressure and vacuum sensors in a cassette by utilizing a proportional cross-connect to pressurize the lines with set pressure or vacuum the lines with set vacuum and measure the response of respective sensors in the cassette. The use of proportional pressure may be used along with other clearing methods to clear material clogging the aspiration channel pathways and tubing of the surgical system. Utilize the cross-connect functionality to more rapidly pressurize the aspiration line upon detection or prediction of a post occlusion surge, thereby reducing the pressure difference between the surgical field, the eye chamber, and aspiration line which may prevent, for example, a surge of fluid out of the anterior chamber of the eye.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A61B 17/00 - Surgical instruments, devices or methods
Sterile packaging for an intraocular lens (IOL) delivery system includes a sealed container with an IOL delivery system contained therein, with a cap sealing the container. One or more tamper-evident solutions are provided on the packaging to ensure an indication of non-sterility. This configuration solves certain issues with prior packaging, such as clumsy transfers and bulky packaging which creates storage issues and mitigates sterility barrier risk associated with pouch or blister packaging or other non-rigid package types.
The present aspect of the disclosure uses software to monitor the fluid amount used and available to a surgical system and may inform a user when the available fluid approaches a depletion threshold so a user may take appropriate steps to minimize impact to the surgical operation.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
Irrigation sleeves which maximize irrigation outflow and have a reduced potential for snagging on incisions are disclosed. More particularly, disclosed irrigation sleeves comprise webbed irrigation ports, crossed irrigation ports, axially elongated irrigation ports, and/or centering dimples. The disclosed irrigation sleeves may further provide optimal irrigation outflow for maintaining chamber stability of the eye.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
Methods and systems provide provides a vacuum surge protection system or an Anti-Vacuum Surge (AVS) module and a console-side connector that form an energy (power) and/or data transfer system, which passes the energy and/or data using a magnetic field, via non-contact magnetic induction, between the console-side connector and the AVS module. The AVS module typically powers a medical tool, such as a phacoemulsification handpiece, for ophthalmic procedures, such as cataract removal.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A phacoemulsification system having an imaging device configured to capture images of an eye and a phacoemulsification probe, a display, and a processor configured to receive an eye scan result providing a two-dimensional array of cataract thicknesses of the eye, find cutlines through which to cut the cataract into sections responsively to the two-dimensional array of cataract thicknesses, and render the images of the eye and the phacoemulsification probe with representations of the found cutlines through which to cut the cataract into sections to the display.
A system includes a jig and a processor. The jig includes a pressure wave damping element under test, and a sensor that is coupled with an aspiration line of a phacoemulsification system distally to the pressure wave damping element, the sensor configured to measure a pressure wave traveling distally in the aspiration line. The processor is coupled with the jig, the processor configured to analyze and display readings of the sensor, so as to allow a user to assess pressure wave damping performance of the pressure wave damping element.
Inventory management cabinets, systems, and related methods are described herein. An example inventory management cabinet includes a housing defining a storage area, the storage area being configured to receive a product, and a plurality of slots arranged within the housing, each of the slots being configured to receive a respective unit of the product. The cabinet also includes at least one imaging device configured to capture information about the product. The cabinet further includes a controller operably coupled to the at least imaging device, where the controller includes a processor and a memory having computer-executable instructions stored thereon. The controller is configured to detect activity within the storage area of the housing, and control the at least one imaging device to initiate capture one or more images of the product in response to detecting activity within the storage area of the housing.
G16H 40/20 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the management or administration of healthcare resources or facilities, e.g. managing hospital staff or surgery rooms
A47F 3/02 - Showcases or show cabinets with dispensing arrangements
A47F 7/02 - Show stands, hangers, or shelves, adapted for particular articles or materials for jewellery, dentures, watches, eye-glasses, lenses, or the like
Methods and apparatuses provide a phacoemulsification probe, wherein the probe has a piezoelectric actuator coupled with a needle configured to be inserted into an eye of a patient; and a processor configured to sequentially drive the actuator electrically in a range of frequencies, to measure a respective electrical power input to the actuator at each of the frequencies in the range, to identify a frequency in the range of frequencies wherein a metric of the electrical power input is a maximum, and to estimate from the identified frequency a mechanical resonant frequency of the actuator, and to drive the actuator electrically at the mechanical resonant frequency.
A system and method for operating a medical probe, the method including driving a tip of the medical probe to cause rotation of the tip (i) in a clockwise trajectory in a plane perpendicular to a longitudinal axis during first time intervals, and (ii) in a counterclockwise trajectory in the plane during second time intervals that are interleaved with the first time intervals.
A computer-based automated phacoemulsification method is disclosed. The method includes determining a vacuum measurement based on a reading from a sensor coupled with an aspiration line; comparing the vacuum measurement to the at least one vacuum threshold; and providing an ultrasound power based on the comparison of the vacuum measurement to the at least one vacuum threshold.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
A computer-based surgery support system and method for obtaining information of surgical procedures from networked equipment in an operating room, storing the retrieved information in a database, receiving a request for the stored information from a user terminal, and providing the stored information in accordance with the received request. The networked equipment may be configured for use in cataract surgical procedures, such as a phacoemulsification system.
G16H 40/63 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for local operation
G16H 20/40 - ICT specially adapted for therapies or health-improving plans, e.g. for handling prescriptions, for steering therapy or for monitoring patient compliance relating to mechanical, radiation or invasive therapies, e.g. surgery, laser therapy, dialysis or acupuncture
G16H 50/70 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for mining of medical data, e.g. analysing previous cases of other patients
89.
AUTOMATIC REAL-TIME CONTROL OF ACTIVATION OF PHACOEMULSIFICATION
A phacoemulsification probe includes a needle, an ultrasound transducer, a sensing element, and a microcontroller. The needle is configured for insertion into an eye of a patient. The ultrasound transducer is configured to vibrate the needle. The sensing element is configured to output an indication indicative of physical contact between the needle and a lens of the eye. The microcontroller is configured to receive the indication, and to activate and deactivate the ultrasound transducer according to the indication.
A phacoemulsification system includes a phacoemulsification handpiece, an irrigation line and an aspiration line connected to the phacoemulsification handpiece, an Anti-Vacuum Surge (AVS) module inserted at least in the aspiration line, and a processor. The processor is configured to automatically detect whether an extension tubing is present in the aspiration line between the phacoemulsification handpiece and the AVS module, to set a first parameter setting, for detecting vacuum surges in the aspiration line, in response to detecting that the extension tubing is present, and, in response to detecting that the extension tubing is not present, to set a second parameter setting, different from the first parameter setting, for detecting the vacuum surges in the aspiration line.
Disclosed are hydrophobic, acrylic materials having both high refractive index and a high Abbe number. The materials may have an internal wetting agent, are well suited for use as implantable ophthalmic devices, and have a refractive index which may be edited through application of energy. When used for an intraocular lens, the high refractive index allows for a thin lens which compresses to allow a small incision size.
C08L 33/26 - Homopolymers or copolymers of acrylamide or methacrylamide
C08L 39/06 - Homopolymers or copolymers of N-vinyl-pyrrolidones
C08L 83/06 - Polysiloxanes containing silicon bound to oxygen-containing groups
G02B 1/00 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
The present invention relates to novel ophthalmic devices comprising polymerized compounds comprising a photoactive chromophore, said polymerized compounds, and special monomer compounds being particularly suitable for compositions and ophthalmic devices. The present invention is also directed to a process of changing the optical properties of said ophthalmic device or a precursor article for manufacturing an ophthalmic device.
The present invention relates to novel ophthalmic devices comprising polymerized compounds comprising a photoactive chromophore, said polymerized compounds, and special monomer compounds being particularly suitable for compositions and ophthalmic devices. The present invention is also directed to a process of changing the optical properties of said ophthalmic device or a precursor article for manufacturing said ophthalmic device.
Disclosed are co-polymers which are produced from reactive monomer mixtures and which have both high refractive index and a high Abbe number. These materials are well suited for use as implantable ophthalmic devices and have a refractive index which may be edited through application of energy. When used for an intraocular lens, the high refractive index allows for a thin lens which compresses to allow a small incision size.
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
A sealing assembly for a progressive cavity pump and a progressive cavity pump assembly having a retaining sleeve, a ring, and an elastic diaphragm terminating in a first end of the diaphragm in a first opening, and in a second end of the diaphragm, opposite the first end, in a second opening larger than the first opening. The second opening is held in contact with the retaining sleeve by the ring, and the first opening is configured to grip a rotor of the progressive cavity pump, and the ring is configured to hold the second opening fixed with respect to a stator of the progressive cavity pump.
F01C 1/10 - Rotary-piston machines or engines of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
F04C 2/107 - Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member with helical teeth
F04C 15/00 - Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups
F04C 18/00 - Rotary-piston pumps specially adapted for elastic fluids
F04C 11/00 - Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston typePumping installations
Systems and methods are provided for detecting the actual tip or tip type being used on a handpiece of an ophthalmic instrument. By detecting the tip type being used, the correct system settings can be used during the surgical procedure, and the surgical system may operate safely.
A phacoemulsification system includes a pump and a processor. The pump includes: (i) a first chamber having a first volume and configured to flow a first fluid at a first flow rate, between a first reservoir and an eye of a patient, and (ii) a second chamber having a second volume and configured to flow a second fluid at a second flow rate, between a second reservoir and the eye. The processor is configured to control the pump to: (i) set a first flow rate of the first fluid in the first volume, so as to obtain a predefined intra-ocular pressure (IOP) in the eye, (ii) based on the first and second volumes and on the first flow rate, calculate a second flow rate of the second fluid that maintains the predefined IOP constant, and (iii) set the calculated second flow rate to the second fluid.
A61F 9/00 - Methods or devices for treatment of the eyesDevices for putting in contact-lensesDevices to correct squintingApparatus to guide the blindProtective devices for the eyes, carried on the body or in the hand
A medical device having a housing, an annular fixture contained in the housing and having a central opening, a needle having a proximal end contained within the central opening of the annular fixture and a distal end protruding out of the housing, a motion assembly, which is configured to move the needle longitudinally back and forth relative to the annular fixture and the housing, and a flexible diaphragm comprising a peripheral part that seals externally around the annular fixture and an inner sleeve that seals around the proximal end of the needle, whereby movement of the needle back and forth causes the sleeve to evert and invert within the central opening while maintaining a vacuum seal between the annular fixture and the needle.
A phacoemulsification system includes a phacoemulsification probe with a distal end for insertion into an eye of a patient, an irrigation pump, an aspiration pump, and a processor. The probe includes an irrigation channel, an aspiration channel, an irrigation sensor, and an aspiration sensor. The irrigation pump is configured to flow irrigation fluid to the irrigation channel. The aspiration pump is configured to evacuate material from the aspiration channel. The processor is configured to detect a clogging of the aspiration channel using the aspiration sensor, to estimate an intra-ocular pressure (IOP) of the eye using the irrigation sensor, to set a reflux pressure for the aspiration pump depending on the estimated IOP, and to repel the clogging by controlling the aspiration pump to apply the reflux pressure.
A61M 1/00 - Suction or pumping devices for medical purposesDevices for carrying-off, for treatment of, or for carrying-over, body-liquidsDrainage systems
100.
EQUALIZING MULTI-CHANNEL DRIVING SIGNALS OF SEGMENTED PIEZOELECTRIC CRYSTALS
A system and method for driving a medical probe. The system including a processor configured to apply respective harmonic electrical signals to two or more piezoelectric crystals coupled with a tip of the medical probe so as to cause the tip to vibrate; and a balancer, which is configured to iteratively adjust the signals to equalize a selected parameter of the signals, so as to cause the tip to vibrate at a predefined trajectory. The method including applying respective harmonic electrical signals to two or more piezoelectric crystals coupled with a tip of the medical probe so as to cause the tip to vibrate. The signals are iteratively adjusted to equalize a selected parameter of the signals, so as to cause the tip to vibrate at a predefined trajectory.
patents
