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Stapler and firing device

  • US 5,083,695 A
  • Filed: 12/18/1990
  • Issued: 01/28/1992
  • Est. Priority Date: 12/18/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. A surgical stapler having:

  • first and second structural members each being elongate in a first direction, the first structural member having a handle part including first and second ends and the second structural member having a base part having first and second ends, and each of the first and second structural members having a jaw part projecting from said first ends, said structural members having pivot means at said second ends adapted for free engagement and disengagement in a plane normal to said first direction for affording, when engaged, relative pivotal movement of said structural members in said plane between a closed position with said jaw parts in closely spaced relationship, and an open position with said jaw parts spaced farther from each other than in said closed position;

    an elongate locking member having first and second ends, first and second sides, inner and outer surfaces extending between said sides and a pivot point closely adjacent the first end of the locking member, the pivot point of said locking member being mounted on said second structural member adjacent the first end of said second structural member for pivotal movement around an axis generally normal to said first direction between a locking position generally aligned with the handle part of said second structural member with said inner surface adjacent said second structural member, and a release position with the second end of said locking member spaced from the second end of said second structural member, said first end of said locking member and said handle part of said first structural member adjacent the first end of said first structural member having surfaces adapted, when said pivot means are engaged with said structural members in said open position, for engagement during movement of said locking member from said release position to said locking position to forcefully move said structural members to said closed position; and

    means for releasable engagement between the elongate locking member and the second structural member comprisingsaid second structural member having a slot extending between said inner and outer surfaces generally adjacent the second end of said second structural member;

    a lever lock including a hook portion adapted to pass through said slot in said second structural member and having a retaining surface adapted to engage a portion of said inner surface,means for mounting the lever lock on said locking member for movement between an unlatched position with said hook portion aligned to pass through said slot and to afford movement of the locking member between said latched and release positions and an latched position with said hook portion aligned to position the retaining surface along a portion of said inner surface to retain the elongate locking member in the locking position;

    first and second release buttons; and

    actuating means mounting said first and second release buttons on opposite sides of said locking member for movement between first and second positions with respect to said locking member, said actuation means being operable by movement of either of said buttons from said first to said second positions for moving said lever lock from said engaged position to said disengaged position.

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