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Tool for laparoscopic surgery

  • US 5,380,277 A
  • Filed: 11/02/1993
  • Issued: 01/10/1995
  • Est. Priority Date: 05/25/1990
  • Status: Expired due to Term
First Claim
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1. An instrument for laparoscopic surgery comprising:

  • (a) a housing having an irrigating fluid inlet port and an irrigating fluid outlet port and an inlet vacuum port and an outlet vacuum port, said housing having an internal vacuum conduit connecting said inlet vacuum port to said outlet vacuum port to permit the passage of evacuated fluid through said internal vacuum conduit and an internal fluid conduit connecting said irrigating fluid inlet port to said irrigating fluid outlet port to permit the passage of irrigating fluid through said internal fluid conduit;

    (b) valve means in a normally closed position carried by said housing and responsive to external force for selectively permitting the passage of irrigating fluid through said internal fluid conduit or said evacuated fluid through said internal vacuum conduit;

    (c) a shaft member having a distal end and a proximate end and a longitudinal axis said proximate end of said shaft member carried by said housing where said shaft member has an axially extending channel therethrough communicating with said fluid outlet port of said housing and said inlet vacuum port of said housing, said channel having a single flow path therethrough and an opening at or adjacent said distal end of said shaft member to permit the passage of irrigating fluid into the operative region or to permit the passage of evacuated fluid into said channel;

    (d) an electrocautery member carried by said shaft member and extending distally from said distal end of said shaft member; and

    (e) electrical connecting means for electrically connecting said electrocautery member to a power source.

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