Foot actuated pinch valve and high vacuum source for irrigation/

Details Foot actuated pinch valve and high vacuum source for irrigation/ Foot actuated pinch valve and high vacuum source for irrigation/

1985-11-22

1987-10-27

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Material introduced into and removed from body through...

604250, A61M 100

Patent

active

047027339

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.

REFERENCES:
patent: 4168707 (1979-09-01), Douvas et al.
patent: 4274411 (1981-06-01), Dotson, Jr.
patent: 4324243 (1982-04-01), Helfgott et al.
patent: 4428748 (1984-01-01), Peyman et al.
patent: 4457747 (1984-07-01), Tu
Site TXR Brochure, Site Microsurgical Systems, Inc., Horsham, Pa., 19044.

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