Abstract: An intraocular lens (IOL) injector with speed regulation for inserting an IOL into a capsular bag of an eye includes an injector body, a cavity, a cartridge ending at a distal end in an injection nozzle, the injector body, the cavity and the cartridge having a channel extending in axial direction, and an axially movable pusher rod advanced by a spring through a shaft, the pusher rod being arranged in the channel of the injector body for pushing the IOL in axial direction out of the cavity and into the cartridge the injection nozzle and finally into the capsular bag of the eye. The pusher rod is engaged with a mechanical speed regulator to limit the maximum speed of injection of the IOL into the eye up to a preset maximum speed for IOL injection, and the speed regulator system is responsive to a user actuation on a lever.

Abstract: A cyclic aperture flow regulator system has an adjustable fluid aperture in a fluid path connecting the aspiration port of a surgical probe with a vacuum source. The cross-sectional area of the fluid aperture can be modified by an actuator. The actuator is controlled to modify the cross-sectional area of the adjustable fluid aperture in cycles. During each cycle, the fluid aperture cross-sectional area is substantially reduced or closed. The cycles occur at a rate fast enough to produce a substantially steady flow, with minimum flow ripple and pressure ripple.

Abstract: A cyclic aperture flow regulator system has an adjustable fluid aperture in a fluid path connecting the aspiration port of a surgical probe with a vacuum source. The cross-sectional area of the fluid aperture can be modified by an actuator. The actuator is controlled to modify the cross-sectional area of the adjustable fluid aperture in cycles. During each cycle, the fluid aperture cross-sectional area is substantially reduced or closed. The cycles occur at a rate fast enough to produce a substantially steady flow, with minimum flow ripple and pressure ripple.

Abstract: A cyclic aperture flow regulator system is disclosed to control flow exiting from a body cavity during surgery in a way that post-occlusion surges are effectively suppressed. The system is composed by an adjustable fluid aperture installed in a fluid path connecting the aspiration port of a surgical probe with a vacuum source, the probe to be inserted in a body cavity. The cross-sectional area of the fluid aperture can be modified by the action of an actuator portion driven by a controller. The controller commands the actuators in the actuator portion to modify the cross-sectional area of the adjustable fluid aperture in cycles. Each cycle of aperture dimension fluctuation includes at least one segment where the fluid aperture cross-sectional area is substantially reduced. The segment of each cycle where the cross-sectional area of the fluid aperture is substantially reduced can optionally include a transient complete closure of the aperture.

Abstract: A surgical tip having a soft adaptive distal end that conforms to the irregular cross sectional contours of lens fragments, this construction allowing better occlusion of the tip distal end by adapting to the irregular shapes of the lens fragments thus improving the efficiency of the lensectomy probe by enhancing vacuum build up, reducing the total irrigant volume required to complete the lensectomy process and protects the lens capsule from accidental rupture said soft tip being usable with vibratory based, laser-based and water-jet based lensectomy handpieces as well as lens aspiration cannula.

Abstract: A method for precise intraocular delivery of an astigmatic intraocular lens in a patient's eye includes recording traceable eye landmarks, recording the corneal astigmatism, registering the recorded astigmatism axis to the recorded traceable eye landmarks, providing a light source for generating a light beam, providing a scanner for deflecting the light beam to form an enclosed treatment pattern that includes a visible registration feature, providing a delivery system that delivers the enclosed treatment pattern to target tissue in the patient's eye to form an enclosed incision therein including the visible registration feature linkable to the recorded traceable eye landmarks registered to the corneal astigmatism axis. Inserting an intraocular lens within the enclosed incision, wherein the intraocular lens has an astigmatism axis registration feature visible to the surgeon to align with the patient's eye visible astigmatism axis registration feature of the enclosed incision.

Abstract: A cyclic aperture flow regulator system is disclosed to control flow exiting from a body cavity during surgery in a way that post-occlusion surges are effectively suppressed. The system is composed by an adjustable fluid aperture installed in a fluid path connecting the aspiration port of a surgical probe with a vacuum source, the probe to be inserted in a body cavity. The cross-sectional area of the fluid aperture can be modified by the action of an actuator portion driven by a controller. The controller commands the actuators in the actuator portion to modify the cross-sectional area of the adjustable fluid aperture in cycles. Each cycle of aperture dimension fluctuation includes at least one segment where the fluid aperture cross-sectional area is substantially reduced. The segment of each cycle where the cross-sectional area of the fluid aperture is substantially reduced can optionally include a transient complete closure of the aperture.

Abstract: A post-occlusion chamber collapse canceling system for a surgical apparatus that detects the breaking of occlusions by tissue fragments in the distal end of the aspiration path and produces a response consisting in a transitory blockage of the distal end the aspiration path to terminate the chamber collapse and a transitory venting of the aspiration line to relieve the vacuum, in a way that post-occlusion chamber collapses are cancelled.

Abstract: A post-occlusion chamber collapse canceling system for a surgical apparatus that detects the breaking of occlusions by tissue fragments in the distal end of the aspiration path and produces a response comprising a transitory blockage of the distal end the aspiration path to terminate the chamber collapse and a simultaneous transitory venting of the aspiration line to relieve the vacuum, in a way that post-occlusion chamber collapses are cancelled.

Abstract: An IOL injector device allows for both powered and manual delivery of an IOL. The injector has a tubular housing. A plunger is longitudinally disposed within the housing and has first and second ends. The first end is disposed towards the front end of the housing. A drive system is coupled to the housing. The drive system causes longitudinal translation of the plunger along the primary axis of the housing. A normally engaged clutch system is coupled to the drive system. The normally engaged clutch system allows manual disengagement of the drive system. A knob coupled to the plunger allows for manual operation of the injector.

Abstract: An IOL injector device allows for both powered and manual delivery of an IOL. The injector has a tubular housing. A plunger is longitudinally disposed within the housing and has first and second ends. The first end is disposed towards the front end of the housing. A drive system is coupled to the housing. The drive system causes longitudinal translation of the plunger along the primary axis of the housing. A normally engaged clutch system is coupled to the drive system. The normally engaged clutch system allows manual disengagement of the drive system. A knob coupled to the plunger allows for manual operation of the injector.

Abstract: A post-occlusion chamber collapse canceling system for a surgical apparatus that detects the breaking of occlusions by tissue fragments in the distal end of the aspiration path and produces a response comprising a transitory blockage of the distal end the aspiration path to terminate the chamber collapse and a simultaneous transitory venting of the aspiration line to relieve the vacuum, in a way that post-occlusion chamber collapses are cancelled.

Abstract: A post-occlusion chamber collapse canceling system for a surgical apparatus that detects the breaking of occlusions by tissue fragments in the distal end of the aspiration path and produces a response consisting in a transitory blockage of the distal end the aspiration path to terminate the chamber collapse and a transitory venting of the aspiration line to relieve the vacuum, in a way that post-occlusion chamber collapses are cancelled.

Abstract: A post-occlusion chamber collapse canceling system for a surgical apparatus that detects the breaking of occlusions by tissue fragments in the distal end of the aspiration path and produces a response consisting in a transitory blockage of the distal end the aspiration path to terminate the chamber collapse and a transitory venting of the aspiration line to relieve the vacuum, in a way that post-occlusion chamber collapses are cancelled.

Abstract: An outflow rate regulator system for use in a phacoemulsification system to prevent the anterior chamber collapses that occur after occlusion breaks caused by fluid surges in the aspiration line. The outflow rate regulator system consisting in a flow limiting device installed in the aspiration line capable of varying the section or the extension of a fluid passage as a function of the pressure difference across the outflow rate regulator access and exit sides. The device is designed to reduce the outflow fluid passage area as a function of an increasing pressure difference across the outflow rate regulator. Alternatively, the effective extension of a narrow fluid passage is designed to increase as the pressure difference across the outflow rate regulator increases. Resistance to flow is increased with increasing pressure differences across the device in reversible manner. Clogging of the narrow fluid passages is avoided by upstream removal of solid particles above a determined size by a retaining filter.

Abstract: An improved computer based surgical video overlay system that allows relevant surgical data from a surgical apparatus to be combined as a graphic image with the video image of a surgical procedure in which the data from the surgical apparatus is sent wireless to the video overlay console. Elimination of the data cable between the surgical apparatus and the video overlay console is advantageous in an operating room environment. The same computer based surgical video overlay system runs computer program that occupies a user interface to allows definition of operation modes, input of relevant data, selection of data overlay graphic screen templates and various methods for customization. A time coded-data file is created and stored including all the relevant parameters of a surgical procedure. This file contains the same time-code included in the graphic image overlaid in the surgical video signal. An precise match can be performed between the recorded data on file and the surgical video recording.

Abstract: An anti-repulsion anti-clogging system for a dual axis lensectomy handpiece consisting in power modulation of bursts of axial oscillatory activity intercalated between bursts of rotational oscillatory activity. Power modulation of the axial bursts comprises reduction of the rise speed of the attack portion of the envelope below 0.75 mils per millisecond. Alternatively power modulation can be in the form of intercalation of a train of pulses of axial oscillations between the bursts of rotational oscillatory activity. The pulses composing the intercalated train can be of equal or different amplitudes. Repulsion of lens fragments is significantly reduced by power modulating the axial pulses intercalated between the rotational pulses as described in the present invention.

Abstract: A system and method for delivering therapeutic laser energy onto selected treatment locations of the retina following a predetermined spatial distribution pattern using one single laser beam. A beam steering mechanism and control system delivers the laser energy sequentially to treatment locations forming a pre-selected treatment layout pattern. The invention allows time consuming therapeutic laser procedures such as pan-retinal photo-coagulation and segmental photocoagulation to be performed with increased accuracy and in a fraction of the time currently required for such procedures.

Abstract: A high-speed surgical handpiece (10) suitable for vitreoretinal surgery having a cutter (42) and actuators (36). The cutter (42) is a guillotine-type cutter activated by an array of leveraged piezoelectric actuators (30) that receive a driving signal from a driving controller. The controller can have control and display units with a plurality of input mechanisms receiving input from a user who selects a desired cutting rate and frequency for the cutter. The control unit produces a piezoelectric actuator output signal based on the inputs received. Fast cutting rates with reduced duty cycle as well as a proportional mode of operation are available, allowing slow controlled cutting action, for example proportional to depression of a foot-pedal (74). Low degrees of vibration and noise generation are produced.

Abstract: A high-speed surgical handpiece (10) of the kind suitable for vitreoretinal surgery having a cutter (44) and an actuator (310). The cutter (44) is a guillotine-type cutter activated by a spring-mass system excited at harmonic frequency by a piezoelectric actuator (310) that receives a driving signal from a driving controller. The controller can have control and display units with a plurality of input mechanisms receiving input from a user. The control unit produces a piezoelectric actuator output signal to excite the spring-mass system at harmonic frequency. Fast cutting rates with reduced duty cycle as well as a proportional mode of operation are available. Low degrees of vibration and noise generation are produced.