초록 ▼

A fluid operated and controlled irrigation and aspiration device for ophthalmic use. A source of fluid under pressure is connected through foot pedal operated valves to clamps for controlling irrigation through a conventional handpiece, and to a vacuum generating device. Selecting valves are provide

A fluid operated and controlled irrigation and aspiration device for ophthalmic use. A source of fluid under pressure is connected through foot pedal operated valves to clamps for controlling irrigation through a conventional handpiece, and to a vacuum generating device. Selecting valves are provided for isolating the vacuum generating means, and for directing pressure to a pulsing circuit. The pulsing circuit can be used to control the vacuum to yield a pulsing aspiration; and, in a modification of the device, the pulsing circuit can be used to control a pressure circuit to operate a cutting device.

대표청구항 ▼

An ophthalmic irrigation and aspiration device comprising; (a) a source of irrigation liquid, (b) a vacuum source, (c) a handpiece, including a needle for insertion into the site of use, said handpiece being adapted to carry outlets for the irrigation liquid and the vacuum from the respective source

An ophthalmic irrigation and aspiration device comprising; (a) a source of irrigation liquid, (b) a vacuum source, (c) a handpiece, including a needle for insertion into the site of use, said handpiece being adapted to carry outlets for the irrigation liquid and the vacuum from the respective sources thereof, (d) a vacuum control valve for selectively connecting said vacuum outlet in the handpiece to said vacuum source, (e) pulsing means for cyclically operating said vacuum control valve, (f) irrigation control means for controlling the flow of said irrigation liquid through the outlet for irrigation liquid in said handpiece, characterized in that said irrigation control means includes first clamping means for stopping the flow of said irrigation liquid through said handpiece, (g) aspiration control means for controlling the application of said vacuum source through said handpiece, (h) fluid operated means for releasing said first clamping means, (i) a source of fluid under pressure, (j) first valve means for selectively connecting said source of fluid under pressure to said fluid operated means for releasing said first clamping means, (k) a fluid operated vacuum generating device, (l) a second valve for selectively directing fluid under pressure from said first valve to said vacuum generating device, (m) a first toggle valve for selectively connecting said fluid under pressure to said pulsing means and to said vacuum control valve, (n) said pulsing means including a first fluid operated valve having an input, an output, and a valve operating port, a second fluid operated valve having an input, an output, and a valve operating port, (o) said output of said first fluid operated valve being in communication with said valve operating port of said second fluid operated valve, and (p) said output of said second fluid operated valve being in communication with said valve operating port of said first fluid operated valve, said output of said second fluid operated valve being connected to said vacuum control valve.