Evaluation of Phacoemulsification Devices

    公开(公告)号:US20250032316A1

    公开(公告)日:2025-01-30

    申请号:US18918520

    申请日:2024-10-17

    Abstract: 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.

    Removal of cataract debris
    3.
    发明授权

    公开(公告)号:US12178750B2

    公开(公告)日:2024-12-31

    申请号:US17101992

    申请日:2020-11-23

    Abstract: In one embodiment, a phacoemulsification apparatus includes actuators configured to vibrate responsively to respective driving signals, a needle including an aspiration channel, and configured to be vibrated by the actuators so as to emulsify a lens of an eye, a generator configured to generate at least one of the driving signals responsively to a vibration pattern selected for the needle, the needle being configured to vibrate in accordance with the selected vibration pattern, and a sensor configured to sense a level of vacuum in the aspiration channel, wherein the generator is configured to alter at least one of the driving signals to transition vibration of the needle from a first vibration pattern selected from the group consisting of a longitudinal vibration pattern and a first helical vibration pattern, to a second vibration pattern of a second helical vibration pattern, responsively to a decrease in the sensed level of vacuum.

    Evaluation of phacoemulsification devices

    公开(公告)号:US12150894B2

    公开(公告)日:2024-11-26

    申请号:US17236221

    申请日:2021-04-21

    Abstract: 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.

    STABILIZING INTRA-OCULAR PRESSURE AT ONSET OF ASPIRATION

    公开(公告)号:US20240207501A1

    公开(公告)日:2024-06-27

    申请号:US18089407

    申请日:2022-12-27

    Abstract: 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.

    PRESSURE SENSING ARRAY IN PHACOEMULSIFICATION HANDPIECE

    公开(公告)号:US20240207092A1

    公开(公告)日:2024-06-27

    申请号:US18089399

    申请日:2022-12-27

    Inventor: Assaf Govari

    CPC classification number: A61F9/007 A61M1/77 A61M2210/0612

    Abstract: 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.

    USER SELECTED CONFIDENCE LEVEL FOR IDENTIFICATION OF AN IMMINENT VACUUM SURGE DURING PHACOEMULSIFICATION

    公开(公告)号:US20240197524A1

    公开(公告)日:2024-06-20

    申请号:US18084703

    申请日:2022-12-20

    Inventor: Assaf Govari

    CPC classification number: A61F9/00736 A61B2217/007

    Abstract: 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.

    ASPIRATION REFLUX CONTROL SYSTEM
    9.
    发明公开

    公开(公告)号:US20240148954A1

    公开(公告)日:2024-05-09

    申请号:US17980689

    申请日:2022-11-04

    Abstract: 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.

Patent Agency Ranking