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Biopsy forceps instrument having irrigation and aspiration capabilities

  • US 5,897,507 A
  • Filed: 11/25/1996
  • Issued: 04/27/1999
  • Est. Priority Date: 11/25/1996
  • Status: Expired due to Term
First Claim
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1. A biopsy forceps instrument for retrieving tissue samples from a patient for use with an endoscope, comprising:

  • a) a flexible tubular member having an irrigation conduit and an aspiration conduit;

    b) a distal assembly having a hollow first jaw and a hollow movable second jaw, said movable second jaw being pivotable relative to said first jaw and coupled to at least one of said irrigation conduit and said aspiration conduit, and said first jaw being coupled to another of said at least one of said irrigation conduit and said aspiration conduit; and

    c) a proximal actuator coupled to said distal assembly for moving said movable second jaw relative to said first jaw from an open position to a closed position to obtain a tissue sample from the patient, and wherein said movable second jaw and said first jaw are adapted such that when said movable second jaw and first jaw are in said closed position, said movable second jaw and first jaw form a substantially closed fluid passage between said irrigation conduit and said aspiration conduit so that the aspiration conduit can retrieve the tissue sample from the distal assembly with irrigation fluid provided by the irrigation conduit.

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