Abstract: A phacoemulsification irrigation sleeve includes an elongated, resilient, tubular body section configured to surround a portion of a shaft of a phacoemulsification needle, the tubular body section having a distal end and a proximal end, and an inner surface and an outer surface. An enlarged section formed on the proximal end of the tubular body portion surrounds a hub of the phacoemulsification needle and connects the irrigation sleeve to a phacoemulsification handpiece. The irrigation sleeve further comprises at least one slitted irrigation port formed adjacent to the distal end of the body section and configured to splay in response to a drop in pressure between the inner surface and the outer surface.

Abstract: A phacoemulsification irrigation sleeve includes an elongated, resilient, tubular body section configured to surround a portion of a shaft of a phacoemulsification needle, the tubular body section having a distal end and a proximal end, and an inner surface and an outer surface. An enlarged section formed on the proximal end of the tubular body portion surrounds a hub of the phacoemulsification needle and connects the irrigation sleeve to a phacoemulsification handpiece. The irrigation sleeve further comprises at least one slitted irrigation port formed adjacent to the distal end of the body section and configured to splay in response to a drop in pressure between the inner surface and the outer surface.

Abstract: A phacoemulsification irrigation sleeve includes an elongated, resilient, tubular body section configured to surround a portion of a shaft of a phacoemulsification needle, the tubular body section having a distal end and a proximal end, and an inner surface and an outer surface. An enlarged section formed on the proximal end of the tubular body portion surrounds a hub of the phacoemulsification needle and connects the irrigation sleeve to a phacoemulsification handpiece. The irrigation sleeve further comprises at least one slitted irrigation port formed adjacent to the distal end of the body section and configured to splay in response to a drop in pressure between the inner surface and the outer surface.

Abstract: A liquefaction handpiece having an internal or integral reservoir for the working fluid. The reservoir may either feed the heater/pump by gravity or may use capillary or wicking action to feed the heater pump.

Abstract: A surgical system for a liquefaction handpiece. The system uses a pressure sensing element located on the output side of the fluid pulse engine to read directly the pressure of the fluid pulse exiting the engine.

Abstract: A surgical handpiece having at least two lumens or tubes mounted to a body. At least one tube is used for aspiration and at least one other tube is used to inject heated surgical fluid for performing a surgical procedure, such as an ophthalmic or otic surgical procedure. A portion of the second tube may form a pumping chamber. The pumping chamber works by boiling a small volume of the surgical fluid. As the fluid boils, it expands rapidly, thereby propelling the liquid downstream of the pumping chamber out of the second tube. The pumping chamber may use a heating filament or a laser to heat the surgical fluid within the boiling chamber, thereby creating a pressure wave that travels down the second tube.

Abstract: A tip for a surgical handpiece having two coaxial tubes or channels mounted within a body. The tip has one or more features that shape the fluid discharge so as to optimize the performance of the handpiece for varying parts of the surgical procedure.