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Endoscope apparatus and surgical instrument therefor

  • US 6,123,665 A
  • Filed: 07/29/1998
  • Issued: 09/26/2000
  • Est. Priority Date: 07/30/1997
  • Status: Expired due to Term
First Claim
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1. A surgical instrument for endoscope, comprising:

  • an operation section having a base part and a single movable part which is movable relative to the base part;

    an elongated and flexible hollow member having a first end coupled to said operating section and a second end for insertion into a body cavity;

    a flexible fluid passage forming member disposed in said hollow member to be slidable relative thereto, a tip end of the fluid passage forming member protruding from and retracting in the second end of the hollow member when the single movable part of the operation section moves in the hollow member relative to the base part thereof; and

    a resecting member disposed within the hollow member, at least one end of the resecting member being engageable with the single movable part which moves relative to the base part of the operation section, the resecting member comprising a loop forming part when it protrudes from the hollow member;

    wherein movement of the single movable part in a first direction protrudes both the tip end of the fluid passage forming member and the resecting member from the hollow member and movement of the single movable part in a second direction retracts both the tip end of the fluid passage forming member and the resecting member into the hollow member.

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