Abstract: A medical device that can emulsify tissue with a heated fluid. The device may include an active heating element that is located within an inner channel at a distal end of a cannula. The cannula is adapted to be inserted into tissue such as a cornea. The active heating element can provide heat to a fluid that flows through the inner channel. The heat can be transferred into a bolus of fluid that is periodically generated by a pump. The heated bolus is then directed onto tissue.

Abstract: An apparatus for guiding a high speed liquid jet used in forming ophthalmic incisions includes an instrument body having an elongated rectangular portion and a tapered end portion. An applanation suction ring assembly is secured to the tapered end, and is provided with a stepped opening extending axially therethrough. A carriage assembly extends longitudinally within the instrument body, and a pair of high precision crossed roller slides join the carriage and body to permit lateral translation of the carriage. A micro-motor assembly secured within the body is joined to a pinion gear which engages a rack gear joined to the carriage to drive the carriage in lateral translation. The carriage includes a proximal connector for a high pressure fluid hose, and a jet nozzle assembly extending from the distal end. A plurality of guide members are provided, all having common structural features adapted to engage the stepped opening of the distal end of the instrument body.

Abstract: An apparatus for guiding a high speed liquid jet used in forming ophthalmic incisions includes an instrument body having an elongated rectangular portion and a tapered end portion. A cylindrical housing is secured to the tapered end, and is provided with a stepped opening extending axially therethrough. A jet carrier includes a longitudinally extending body, and a pair of high precision crossed roller slides join the carrier and body to permit lateral translation of the jet carrier. A micro-motor assembly secured within the rectangular body portion is joined to a pinion gear which engages a rack gear joined to the jet carrier to drive the jet carrier in lateral translation. The jet carrier includes a proximal connector for a high pressure fluid hose, and a jet nozzle assembly extending from the distal end. A plurality of guide members are provided, all having common structural features adapted to engage the stepped opening of the distal end of the instrument body.