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Surgical cassette

  • US 5,267,956 A
  • Filed: 09/15/1992
  • Issued: 12/07/1993
  • Est. Priority Date: 02/05/1992
  • Status: Expired due to Term
First Claim
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1. A cassette for use in combination with a surgical handpiece and a control console for controlling irrigation and aspiration fluid flows in the handpiece, comprising:

  • a) a housing having an external surface and an interface wall adapted to be held in operative association with the control console;

    b) a means for generating a partial vacuum through interaction with a motive force in the control console having an inlet and a discharge line connected to a waste container;

    c) an aspiration fluid inlet coupling integrally formed in the housing;

    d) an irrigation fluid inlet coupling integrally formed in the housing;

    e) an irrigation fluid outlet coupling integrally formed in the housing;

    f) an aspiration fluid flow passage integrally formed in the housing in fluid communication with the aspiration fluid inlet coupling and the partial vacuum generating means inlet;

    g) an irrigation fluid capacitance chamber integrally formed in the housing;

    h) an irrigation fluid inlet flow passage integrally formed in the housing in communication with the irrigation fluid inlet coupling and the capacitance chamber;

    i) an irrigation fluid outlet flow passage integrally formed in the housing in communication with the irrigation fluid inlet flow passage and the irrigation fluid inlet coupling through the capacitance chamber and the irrigation fluid outlet coupling to form a continuous irrigation fluid flow passage between the irrigation fluid inlet coupling and the irrigation fluid outlet coupling; and

    j) a valve on the interface wall of the housing for controlling the irrigation fluid flow in the continuous irrigation fluid flow passage.

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