Foot actuated pinch valve and high vacuum source for irrigation/aspiration handpiece system
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United States of America Patent
Stats
-
Oct 27, 1987
Grant Date -
N/A
app pub date -
Nov 22, 1985
filing date -
Nov 22, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pinch valve device is disclosed for a disposable, inexpensive irrigation/aspiration handpiece system used for the removal of unwanted material in a very small, enclosed operative site in which it is important to maintain pressure within a certain range, such as in the surgical operation for removal of a cataract lens from the human eye. The device includes a foot pedal for selectively: (1) restricting the flow of irrigation and aspiration fluid in the handpiece system; (2) permitting irrigation by the handpiece system, without permitting concurrent aspiration by the handpiece system; (3) permitting both irrigation and aspiration by the handpiece system; and (4) providing selective increase in aspiration force.
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Cited Art Landscape
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