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Knife shield for surgical instruments

  • US 5,800,449 A
  • Filed: 03/11/1997
  • Issued: 09/01/1998
  • Est. Priority Date: 03/11/1997
  • Status: Expired due to Term
First Claim
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1. A surgical instrument including a handle, an end effector and an elongated closure tube connected to said handle and adapted to actuate said end effector comprising:

  • a tissue stop for use in a surgical instrument, wherein said tissue stop comprises;

    a distal end and a proximal end;

    a body at said proximal end;

    a knife housing at said distal end;

    a neck interconnecting said body and said knife housing;

    a knife blade slot in said knife housing at said distal end;

    a knife channel connecting said distal end to said proximal end through said body, said neck and said housing;

    a first wireform guide channel on a first side of said body; and

    a second wireform guide channel on a second side of said body;

    a first wireform element passing through said elongated tube on a first side of said tissue stop;

    a second wireform element passing through said elongated tube on a second side of said tissue stop;

    a knife positioned within said tissue stop wherein said knife includes a blade positioned in said knife blade slot;

    a knife edge at a distal end of said knife blade such that the entirety of said knife edge is contained within said slot when said knife is in a proximal position.

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