초록 ▼

A surgical handpiece having at least two lumens mounted to a body. One lumen is used for aspiration, the second lumen is used to inject heated surgical fluid for liquefying a cataractous lens. A portion of the second lumen is surrounded by an insulated heating element that heats the surgical fluid a

A surgical handpiece having at least two lumens mounted to a body. One lumen is used for aspiration, the second lumen is used to inject heated surgical fluid for liquefying a cataractous lens. A portion of the second lumen is surrounded by an insulated heating element that heats the surgical fluid as it passes through the second lumen. The handpiece may also contain a device for delivering the surgical fluid through the second lumen in metered pulses of a defined volume.

대표청구항 ▼

[ We claim:] [1.] A liquefaction handpiece, comprising:a) a body;b) a first irrigation lumen mounted internal to the body; andc) a heater cartridge forming a portion of the first irrigation lumen the heater cartridge mounted internal to the body and made from thin wall hyperdermic tubing surrounded

[ We claim:] [1.] A liquefaction handpiece, comprising:a) a body;b) a first irrigation lumen mounted internal to the body; andc) a heater cartridge forming a portion of the first irrigation lumen the heater cartridge mounted internal to the body and made from thin wall hyperdermic tubing surrounded by an electrical insulating sleeve and a resistive heater, the heater being surrounded by an insulator and being capable of heating a surgical fluid within the first irrigation lumen to a temperature of approximately 45.degree. C. to 105.degree. C.