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公开(公告)号：US11771818B2
公开(公告)日：2023-10-03
申请号：US17382038
申请日：2021-07-21
发明人： Assaf Govari , Yehuda Algawi , Eran Aharon , Ilya Sitnitsky , Stanislav Katzir , Amit Fuchs
CPC分类号： A61M1/774 , A61F9/00763 , A61M39/22 , A61M2205/0272
摘要： In some embodiments, a fluid dynamics system includes a solenoid valve including a valve body including ports including an inlet port and an outlet port, and a valve cavity having a direction of elongation and configured to provide fluid connectivity between respective ones of the ports, a solenoid coil disposed in the valve body around valve cavity, and a plunger comprising a permanent magnet, and configured to move back-and-forth along the direction of elongation between a first position and a second position in the valve cavity selectively controlling the fluid connectivity between respective ones of the ports, and a controller configured to apply at least one current to the solenoid coil to selectively move the plunger between the first position and the second position, and to selectively maintain the plunger in the first position and the second position.
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公开(公告)号：US11771594B2
公开(公告)日：2023-10-03
申请号：US17382014
申请日：2021-07-21
发明人： Assaf Govari , Eran Aharon , Yehuda Algawi , Ilya Sitnitsky , Amit Fuchs
CPC分类号： A61F9/00745 , A61M1/73 , A61M1/742 , A61M1/743 , A61M2205/0288 , A61M2205/3334 , A61M2205/3344 , A61M2210/0612
摘要： A system includes (i) a solenoid valve, positioned between a handle of a probe, and an aspiration line coupled with the handle for aspirating fluids from the probe, the solenoid valve includes at least a solenoid coil and a plunger movable by the solenoid coil, (ii) a sensor, positioned between the handle and the aspiration line and configured to produce a signal indicative of a fluid metric in the aspiration line, and (iii) a controller, configured to identify, based on the signal, a vacuum surge in the aspiration line, and, in response to identifying the vacuum surge, to apply at least one current to the solenoid coil to selectively move the plunger between a first position and a second position, and to selectively maintain the plunger in the first position and the second position.
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公开(公告)号：US20230039864A1
公开(公告)日：2023-02-09
申请号：US17749421
申请日：2022-05-20
发明人： Assaf Govari , Christopher Thomas Beeckler , Vadim Gliner , Amit Fuchs , Ilya Sitnitsky , Eran Aharon
IPC分类号： A61M3/02
摘要： A system includes an enclosure, an irrigation retainer, one or more sensors, and a processor. The irrigation retainer is coupled with the enclosure and configured to accept an irrigation container holding irrigation fluid for pumping to a phacoemulsification handpiece. The one or more sensors are coupled with the irrigation retainer and configured to provide at least one signal indicative of a remaining amount of the irrigation fluid. The processor is configured to receive the at least one signal, and in response to the at least one signal, output an estimation of the remaining amount of the irrigation fluid in the irrigation container or an estimation of the amount of irrigation fluid used.
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公开(公告)号：US20230240889A1
公开(公告)日：2023-08-03
申请号：US17590184
申请日：2022-02-01
发明人： Amit Fuchs , Assaf Govari , Eran Aharon
CPC分类号： A61F9/00745 , B06B1/0276 , B06B2201/55 , B06B2201/76
摘要： 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.
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公开(公告)号：US20230039808A1
公开(公告)日：2023-02-09
申请号：US17729343
申请日：2022-04-26
发明人： Assaf Govari , Christopher Thomas Beeckler , Vadim Gliner , Ilya Sitnitsky , Amit Fuchs , Joseph Thomas Keyes , Eran Aharon
摘要： A system and method include vibrating a needle of a phacoemulsification handpiece by driving one or more piezoelectric crystals in the handpiece with one or more electrical signals having different respective frequencies using one or more respective drive modules. The needle is inserted into an eye of a patient. The frequencies of the electrical signals are tuned to respective one or more target frequencies, and respective electrical impedances seen by the drive modules are registered. In response to an electrical impedance seen by at least one of the drive modules undergoing a change exceeding a preset impedance change, an indication is provided that material in the eye surrounding the needle has changed, a level of vibration of the needle is changed, and/or the frequency of at least one of the drive modules is adjusted to an electrical resonant frequency thereof.
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公开(公告)号：US20220339032A1
公开(公告)日：2022-10-27
申请号：US17236221
申请日：2021-04-21
发明人： Assaf Govari , Yehuda Algawi , Amit Fuchs , Eran Aharon , Ilya Sitnitsky
摘要： 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.
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公开(公告)号：US20230338189A1
公开(公告)日：2023-10-26
申请号：US17728356
申请日：2022-04-25
发明人： Amit Fuchs
IPC分类号： A61F9/007
CPC分类号： A61F9/00745
摘要： 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.
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公开(公告)号：US20230043082A1
公开(公告)日：2023-02-09
申请号：US17748091
申请日：2022-05-19
IPC分类号： A61F9/007
摘要： A system and method that includes inserting a needle of a phacoemulsification handpiece into an eye of a patient and vibrating the needle in a first trajectory. Matter from the eye is aspirated via an aspiration line while the needle is vibrated in the first trajectory. An indication is received, of a vacuum level in the aspiration line. Determined is, that the vacuum level has changed by at least a preset vacuum level change, and in response vibrating the needle is switched to a second trajectory, different from the first trajectory.
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公开(公告)号：US20230338190A1
公开(公告)日：2023-10-26
申请号：US18118326
申请日：2023-03-07
发明人： Amit Fuchs , Philip Alper
CPC分类号： A61F9/00745 , B06B1/0261 , B06B1/0215 , A61B17/00 , A61B2017/00402 , A61B2017/00141 , A61B2017/00194 , B06B2201/55 , B06B2201/76 , B06B2201/40
摘要： 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.
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公开(公告)号：US20230149213A1
公开(公告)日：2023-05-18
申请号：US17529713
申请日：2021-11-18
发明人： Amit Fuchs
IPC分类号： A61F9/007
CPC分类号： A61F9/00745 , A61B2017/00725
摘要： A method for tuning a phacoemulsification probe during a procedure for treating an eye. The method includes vibrating a piezoelectric actuator of the phacoemulsification probe, by applying to the piezoelectric actuator a tuning signal that (i) covers an operational bandwidth of the phacoemulsification probe and (ii) has an initial power level that is lower than a normal power level set for treating the eye. The tuning signal is measured during an initial signal tuning session. An operating frequency for the phacoemulsification probe is derived from the measured tuning signal. A driving signal, having the normal power level and the derived operating frequency, is applied to the piezoelectric actuator.
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