A device is described herein for performing capsulotomies that improves temperature uniformity and current flow around a cutting element of the device. The device includes a series of features whose geometries help remove cold and/or hot spots from the cutting element while maintaining the mechanical strength of the cutting element. In an embodiment, a device includes a cutting element and one or more electrical leads for providing an electrical discharge to the cutting element. The device further includes wire tabs configured to conductively couple an electrical lead to cutting element. Each wire tab includes a central conductive path and one or more conductive shunt paths conductively separated by one or more slots. The device further includes anchor tabs that are each associated with a slot disposed along the circumference of the cutting element and positioned to at least partially separate an anchor tab from a portion of the cutting element.

A medical control device includes: determination circuitry configured to determine whether or not a specific surgical tool is included in a captured image based on an image signal generated by an imaging device configured to capture an image of a subject eye; image generation circuitry configured to generate an image for display based on the image signal; and a state controller configured to control, in a case where the determination circuitry determines that the specific surgical tool is not included in the captured image, operation of the image generation circuitry or an imaging field of view by the imaging device so as to maintain a state of the subject eye in the image for display.

A surgical knife safety device having a handle, a blade connected to the handle, and a guard carried by the handle for sliding movement between a retracted position in which the blade is exposed for use, and an extended position for covering the sharp cutting edge of the blade. In the retracted position, an enlarged guard radius is provided at the distal end of the handle to allow improved handle control and blade orientation. The enlarged guard radius is positioned to allow the user to firmly grip a large distal handle portion which is preferably molded as a single piece with the blade holder, preventing unwanted blade or handle movement due to guard mechanism tolerances. A spring, such as leaf spring or a cantilever beam, and a pair of detents or slots are provided to fix the guard in the extended or retracted position and to provide resistance during movement between the two positions. Additionally, a pushback prevention mechanism, a user operable lock and a drop-force operable lock are provided to prevent accidental retraction of the guard from the fully extended and guarded position.

Methods and apparatuses for automatically switching different aspiration levels to an ocular probe are disclosed herein. The probe may be a phacoemulsification probe. A first aspiration level, supplied by a first pump, may be applied to the probe simultaneously with ultrasonic energy. A second aspiration level, supplied by a second pump, may be automatically switched from the first aspiration level. Control feed back of the pumps may be varied according to set thresholds.

A surgical apparatus for making an incision in a living tissue according to the present disclosure includes a hand piece including a loop-type electrode part and a generator configured to transmit electrical energy to the electrode part, wherein the generator applies electric-field pulse waveforms made of two consecutive pulse groups to the electrode part, the two consecutive pulse groups include a first pulse group and a second pulse group, each pulse group includes mini-pulses, a peak voltage of the first pulse group is less than a peak voltage of the second pulse group, and a duration of the first pulse group is longer than a duration of the second pulse group.

The present disclosure generally relates to fluid control valves for delivering and/or aspirating fluid during ophthalmic surgeries and procedures. In one embodiment, a valve assembly includes a first portion configured to fluidly couple with a gas supply line and a second portion configured to fluidly couple with a liquid supply line and an infusion line. The first portion and the second portion are partitioned or separated from each other by a filter having a hydrophobic membrane configured to prevent the flow of liquids therethrough while allowing the free flow of gas. Accordingly, an infusion liquid may be flown through the second portion while gases may be simultaneously aspirated through the first portion, without any liquids travelling into the gas supply line. The gas supply line may thus be utilized to vent or purge gases from the infusion line before or during performance of surgical procedures.

A system for ophthalmic surgery on an eye includes: a pulsed laser which produces a treatment beam; an OCT imaging assembly capable of creating a continuous depth profile of the eye; an optical scanning system configured to position a focal zone of the treatment beam to a targeted location in three dimensions in one or more floaters in the posterior pole. The system also includes one or more controllers programmed to automatically scan tissues of the patient's eye with the imaging assembly; identify one or more boundaries of the one or more floaters based at least in part on the image data; iii. identify one or more treatment regions based upon the boundaries; and operate the optical scanning system with the pulsed laser to produce a treatment beam directed in a pattern based on the one or more treatment regions.

In one aspect of the subject invention, a grip is provided for mounting to a syringe, the grip including: an elongated body extending along a longitudinal axis between first and second ends, the first end defining a female luer fitting configured for mounting onto the syringe, an inlet opening being defined in the female luer fitting, the second end defining a male luer fitting defining an outlet opening, and, a liquid passageway defined through the body between the inlet opening and the outlet opening to allow liquid flow therebetween. The body further defines an outer surface encircling the longitudinal axis, the outer surface being at least partially textured. Advantageously, with the subject invention, a grip is provided which is configured to both mount to a syringe and to mountingly receive a cystotome, in providing an enhanced gripping surface for a practitioner performing a capsulotomy.

A device is described herein for performing capsulotomies that improves suction uniformity and produces rolled capsulotomy edges. The device includes a suction cup that forms a tapered circumferential suction chamber which enables suction to be applied to a tissue in a first direction. The tapered circumferential suction chamber decreases in cross-sectional area from a proximal end of the device towards a distal end of the device. The device further includes a stem coupled to the suction cup to provide suction to the suction cup. The stem forms a neck that enables fluid flow to the suction cup in a direction substantially perpendicular to the first direction. The device further includes a cutting element configured to excise the tissue.

An ophthalmic surgical instrument for cataract removal surgery includes a helical coil structure including a wire or elongated structure coiled in a plurality essentially similar diameter coils of 360-degree turns in a corkscrew having a coil diameter sufficiently small to fit within an incision of a human ocular lens capsule for entering the human ocular lens capsule during a cataract removal surgery. A pointed sharp end pierces and grasps a human ocular lens under the control of a surgeon upon being inserted in a human ocular lens capsule within said ocular lens capsule during a cataract removal surgery. The corkscrew structure firmly holds the human ocular lens and controls the position and movement of the human ocular lens during said cataract removal surgery.