An exemplary surgical device includes an element positionable within a shaft having a lumen defined therethrough with the element movable from a stored position to a deployed position in which a larger portion of the element extends out of the distal end of the lumen. The element forming a closed loop which is positioned around the lens while the lens is within a capsular bag. The closed loop is reduced in size to form a cut in the lens.

Apparatus (100) for use with a motion source that generates reciprocating linear motion. The apparatus includes a cutting ring (120) comprising a sharp cutting edge shaped and sized to engage an anterior lens capsule of the eye (20) and a longitudinal-motion member (150) coupled to the cutting ring, and that is configured to be coupled to the motion source, such that the motion source imparts reciprocating linear motion to the longitudinal motion member. The apparatus additionally includes a motion-conversion mechanism coupled to the longitudinal-motion member and to the cutting ring and configured to convert the reciprocating linear motion of the longitudinal-motion member into back-and-forth rotational motion of the cutting ring to create a circular aperture in the anterior capsule of the eye by the cutting ring. Other applications are also described.

The first step for removal of cataracts generally is a capsulotomy—the removal of the anterior capsule of the eye lens. The circular capsulotomy incision tool provides a device that produces sharper cuts, with precise measurements, in an economical, reliable form without the need for complicated or expensive equipment, or extensive surgeon training or skill. The tool uses a resilient ring with a sharp cutting edge. The ring is collapsed, put in place through a corneal incision, and the original circular shape is allowed to return. The device uses a pulley mechanism to rotate the ring, enabling the cutting edge to reliably create a precisely edged capsulotomy.

A medical device for removing lens tissue from inside a capsular bag of an eye including a cam assembly operatively coupled to a vacuum generation source positioned within the housing. A first portion is operatively coupled to the vacuum generation source and a second portion is operatively coupled to the first portion and to the shaft. The first portion is capable of rotating about an axis to cause the vacuum generation source to generate vacuum through the lumen. The second portion is capable of rotating about the axis with the first portion to cause the shaft to oscillate. A first degree of actuation of a trigger causes the vacuum generation source to generate vacuum within the lumen of the shaft, and a second degree of actuation of the trigger causes the shaft to oscillate as the second portion rotates. Related systems, devices, and methods are provided.

Devices, systems, and methods for performing an ophthalmic procedure in an eye are disclosed. The devices include a hand-held portion and a distal, elongate member coupled to the hand-held portion having a lumen operatively coupled to a vacuum source. A drive mechanism operatively coupled to the elongate member is configured to oscillate the elongate member. When in use, the device is configured to aspirate ocular material from the eye through the lumen. The drive mechanism retracts the elongate member with a retraction speed profile and advances the elongate member with an extension speed profile. The retraction speed profile is different from the extension speed profile.

Provided are embodiments of systems, devices and methods to aid in or perform the capsulotomy procedure via access into an eye through a small incision. Embodiments of the present disclosure may employ the unique characteristics of shape-memory materials to enable device access into the eye through the requisite small incision size, and via simple mechanical means either to create a template for surgeons to follow in order to create an appropriately-sized capsulotomy, or to create such a capsulotomy via cutting, tearing, or abrading the lens capsule.

Medical devices and methods for removing a predetermined portion of soft tissue from a target tissue layer, thereby creating a channel between two side walls of the target tissue layer, are described. The medical device is a cutting tool comprising: an elongated round body extending along a longitudinal axis and having a uniform outer cross-section at a proximal side thereof; a cutting portion at a distal side of the elongated body, comprising at a distal end thereof a cutting edge of a first cross-section being smaller than said outer cross-section, and a distally and continuously decreasing outer cross-section; and a chamber extending along the longitudinal axis inside the cutting tool from said cutting portion, the chamber having dimensions enabling storing of the removed soft tissue portion inside the chamber thereby providing a validation to the channel creation.

Certain embodiments provide a cover mounted on top of a manifold, the cover comprising an exhaust opening and an inner surface forming a space between the inner surface of the cover and an outer surface of the manifold, wherein the space is configured to receive pressurized gas at an inlet positioned on a first side of a valve. The valve is coupled to the outer surface of the manifold and positioned within the space. The exhaust opening is positioned on a second side of the valve opposite the first side of the valve such that pressurized gas circulates from the inlet around the valve and exits through the exhaust opening.

A vitrectomy apparatus is provided, including a pressure source, a cut valve connected to the pressure source, the cut valve configured to be turned on and off to provide pressure to selectively extend and retract a vitrectomy cutting device, a sensor configured to sense pressure provided from the cut valve, and a controller configured to control operation of the cut valve based on pressure sensed by the sensor. The controller is configured to monitor pressures encountered and alter cut valve timing based on pressure conditions previously encountered.

A small gauge surgical instrument is shown with advantages such as diminished “play” at the tip. A surgical instrument assembly is also shown with support along a length of the instrument that can be selected by the surgeon. Devices and method described provide adjustability of the instrument without protruding into a gripping surface of the instrument.