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.

Provided is an ophthalmic surgery instrument that is capable of simplifying the structure of a rod-shaped portion, which is inserted into an eyeball during ophthalmic surgery, and that is suitable for excising a to-be-excised part of the eyeball. The ophthalmic surgery instrument includes a rod-shaped portion that is inserted into an eyeball during ophthalmic surgery. The rod-shaped portion has a single passage formed therein so as to penetrate from one end portion thereof to another end portion thereof. A bent portion is formed at a tip end of the rod-shaped portion. A liquid is caused to flow through the passage to flow out from a tip end opening portion of the passage or a to-be-excised part is sucked through the passage while excising the to-be-excised part with the bent portion.

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 design is described herein for rings and for cutting rings for a device used in capsulotomy procedures. A set of ring dimensions can describe a desired height of a ring at each location of the ring. The set of ring dimensions is also associated with an intended wall thickness, and thus is associated with an intended cross-sectional area at each ring location. A wall thickness at each portion of a can vary from the intended wall thickness specified by the set of ring dimensions at various locations of the ring. At these locations, the height of the ring can be varied such that the resulting cross-sectional area of the ring at these locations is substantially similar to the intended cross-sectional area of the ring at the locations.

Apparatus and methods are described for performing a procedure on a patient's eye. A robotic unit inserts an ophthalmic tool into the eye via an incision in the cornea, such that a tip of the ophthalmic tool is disposed within the eye and a remote center of motion location of the ophthalmic tool is disposed within the incision. The location and the orientation of the tip of a control-component tool are determined based upon data received from one or more location sensors, and the tip of the ophthalmic tool is moved within the eye in a manner that corresponds with movement of the control-component tool. Feedback is provided to an operator that is indicative of a disposition of the remote center of motion location of the ophthalmic tool relative to the incision. Other applications are also described.

A method of treating a lens of a patient's eye includes generating a light beam, deflecting the light beam using a scanner to form a treatment pattern of the light beam, delivering the treatment pattern to the lens of a patient's eye to create a plurality of cuts in the lens in the form of the treatment pattern to break the lens up into a plurality of pieces, and removing the lens pieces from the patient's eye. The lens pieces can then be mechanically removed. The light beam can be used to create larger segmenting cuts into the lens, as well as smaller softening cuts that soften the lens for easier removal.

A surgical system for performing a capsulotomy of a lens capsule of an eye includes an elastic ring, a suction cup, an interface, a converter, and a control console. The elastic ring includes a conductive surface. The interface may be coupled to an air port and/or a fluid line of a phacomachine. The converter detects a pulse of air from the phacomachine via the interface, and produce an electrical signal in response. Fluid received from the phacomachine is delivered into the suction cup. The system is configured to remove the fluid from the suction cup and between the suction cup and a surface of the eye to form a suction seal. The control console is configured to, in response to receiving the electrical signal, drive a series of electrical pulses through the conductive surface of the elastic ring, causing the elastic ring to perform a tissue cutting operation.

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.

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.