Control system for intraocular surgical device

Details Control system for intraocular surgical device Control system for intraocular surgical device

1984-02-08

1986-05-27

Coven, Edward M.

Surgery

Truss

Pad

604 22, A61B 1732

Patent

active

045909350

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: 3033194 (1962-05-01), Lippert
patent: 3126889 (1964-03-01), Blumenfeld
patent: 3805793 (1974-04-01), Wright
patent: 3815604 (1974-06-01), O'Malley et al.
patent: 3884238 (1975-05-01), O'Malley et al.

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