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Tool for laparoscopic surgery

  • US 5,334,140 A
  • Filed: 01/12/1993
  • Issued: 08/02/1994
  • Est. Priority Date: 05/25/1990
  • Status: Expired due to Term
First Claim
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1. An instrument for laparoscopic evacuation and collection of particulate matter from a body cavity, comprising:

  • (a) a housing having a proximate end and a distal end and having an outlet port for the passage of evacuated fluid and a first conduit communicating with said outlet port, said housing further having an inlet port for the passage of irrigating fluid and a second conduit communicating with said inlet port;

    (b) a third conduit carried by said housing having a longitudinal axis and a proximate end and a distal end with an opening adjacent said distal end, said third conduit extending in an axial direction from said distal end of said housing and having a collection chamber for collecting said particulate matter adjacent said distal end of said third conduit where said collection chamber communicates with said opening and where said third conduit has an axially extending inner conduit communicating with said first and second conduits and said collection chamber, said inner conduit having a single flow path therethrough to permit the passage of irrigating fluid through said opening and into said body cavity or to permit the passage of said evacuated fluid suctioned from said body cavity through said opening, and where said third conduit has an engagement lip extending radially at said distal end of said third conduit forming a terminus and axial boundary of said opening, said collection chamber having a greater cross-sectional area than said inner conduit;

    (c) valve means carried by said housing responsive to external force in a normally closed position to preclude the flow of irrigating or evacuated fluid for selectively permitting the passage of irrigating fluid through said inlet port and into said inner conduit or for selectively permitting passage of evacuated fluid or said particulate matter through said opening into said collection chamber.

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