Control system for intraocular surgical device

Fluid handling – Systems – Programmer or timer

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Details

91448, 128305, F15B 2108, A61F 900

Patent

active

044495501

ABSTRACT:
A control system for an intraocular surgical device has first and second actuatable one-way valves connected in series with a high pressure gas input, with the output of the second valve vented to the atmosphere and each valve being actuatable between a closed state and an open state wherein the input and output are in communication. A five-way actuatable valve has an input connected to the series connection between the first and second valves, two outputs vented to the atmosphere and two outputs connectable to a surgical device. The five-way valve is actuatable between a first state wherein the input is in communication with one device output and the other device output is in communication with one venting output and a second state wherein the input is in communication with the other device output and the one device output is in communication with the other venting output. A control circuit maintains the first and second valves in the closed and open states respectively until a device is connected and thereafter reverses said states and for selectively actuating the five-way valve between the first and second states only when the first valve is open and the second valve is closed.

REFERENCES:
patent: 896120 (1908-08-01), Kramer
patent: 3763878 (1973-10-01), Harden
patent: 3943972 (1976-03-01), Bitonti

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