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Endoscopic surgical clip applier

  • US 10,363,045 B2
  • Filed: 06/21/2016
  • Issued: 07/30/2019
  • Est. Priority Date: 03/26/2007
  • Status: Active Grant
First Claim
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1. An apparatus for application of surgical clips to body tissue, the apparatus comprising:

  • a shaft assembly including an upper housing and a lower housing, the shaft assembly having;

    first and second jaw members mounted adjacent a distal end portion of the shaft assembly and movable between a spaced-apart position and an approximated position;

    a wedge plate positioned adjacent the first and second jaw members and configured for selective interposition therebetween to move the first and second jaw members to the spaced-apart position;

    a drive channel positioned adjacent the first and second jaw members and configured for selective camming of the first and second jaw members to move the first and second jaw members to the approximated position;

    a wedge plate rack mechanism operatively interposed between a channel of the lower housing and the drive channel, the wedge plate rack mechanism including;

    a wedge plate rack operatively coupled to the wedge plate such that a distal movement of the wedge plate rack is translated into a distal movement of the wedge plate and a proximal movement of the wedge plate rack is translated into a proximal movement of the wedge plate; and

    a single gear making contact with each of the wedge plate rack and the drive channel such that distal movement of the drive channel is translated into the proximal movement of the wedge plate rack and a proximal movement of the drive channel is translated into the distal movement of the wedge plate rack, wherein the distal movement of the drive channel engages a camming surface of the first and second jaw members to move the first and second jaw members to the approximated position to form a surgical clip therebetween and wherein the proximal movement of the drive channel engages the distal movement of the wedge plate to interpose the wedge plate between the first and second jaw members such that the first and second jaw members are in the spaced-apart position, wherein a first portion of the single gear contacts a portion of the wedge plate rack and a second portion of the single gear selectively contacts a portion of the drive channel.

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