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Endoscope with sheath retaining device

  • US 5,876,329 A
  • Filed: 09/03/1997
  • Issued: 03/02/1999
  • Est. Priority Date: 08/08/1996
  • Status: Expired due to Fees
First Claim
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1. An endoscope for use with a sheath for performing an endoscopic procedure, the sheath having a distal end portion movable between a radially expanded position and a contracted position, the distal end portion of the sheath being biased toward the contracted position comprising:

  • a handle;

    an insertion tube extending away from the handle portion and terminating at a distal end portion, the distal end portion of the insertion tube having a non-circular cross-sectional area and having a generally axially extending outer surface the insertion tube being removably coverable by the distal end portion of the sheath and insertable therein when the sheath is in the radially expanded position; and

    a sheath retaining member connected to the distal end portion of the insertion tube, the sheath retaining member having a pair of spaced-apart retaining tabs extending generally radially away from the outer surface of the distal end portion, the retaining tabs being sized so the distal end portion of the sheath is stretched over the retaining tabs when the distal end portion of the insertion tube is adjacent to the distal end portion of the sheath and when the distal end portion of the sheath is in the contracted position, the retaining tabs having engaging surfaces that engage the sheath when the sheath is in the contracted position and prevent the distal end portion of the sheath from moving axially relative to the distal end portion of the insertion tube.

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