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Fast response tubeless vacuum aspiration collection cassette

  • US 4,758,238 A
  • Filed: 08/06/1987
  • Issued: 07/19/1988
  • Est. Priority Date: 09/25/1985
  • Status: Expired due to Term
First Claim
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1. A fast response vacuum aspiration system for use with a source of aspiration and an aspiration surgical instrument comprising:

  • a removable cassette housing which includes a wall portion, having a first surface which, when in use, is oriented towards said source of aspiration;

    at least one sealed collection container secured within said cassette housing;

    at least one flow channel formed in said first surface of said wall portion of said cassette housing for communicating said container with said source of vacuum and said aspiration tool;

    a resilient gasket means abutting said first surface of said wall portion and covering said fluid channels to seal said fluid channels;

    a retaining plate, associated with said cassette housing, sandwiching said gasket means to said wall portion;

    one or more valve seats interposed along said flow channel adapted to receive valve actuator means through said retaining plate to force a portion of said gasket means into said valve seat blocking any fluid flow in said flow channel; and

    each said valve seat connecting first and second portions of said flow channel and comprising a cavity positioned in the wall portion of the cassette housing and being defined by side walls and a bottom wall, and including an aperture in the bottom wall which is in fluid communication with the second portion of the fluid flow channel, said first portion of the flow channel entering said cavity at least partially through said side wall.

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