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Circular surgical stapler with mating anvil and shell assembly

  • US 9,629,624 B2
  • Filed: 03/21/2013
  • Issued: 04/25/2017
  • Est. Priority Date: 11/06/2008
  • Status: Active Grant
First Claim
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1. A surgical fastener applying apparatus comprising:

  • an elongated body member having proximal and distal ends; and

    a fastener applying portion disposed adjacent the distal end of the elongated body member, the fastener applying portion comprising;

    a first member defining a central opening, and including an annular first tissue contacting surface, the first tissue contacting surface comprising;

    a plurality of slots through which a plurality of surgical fasteners are ejected during firing of the surgical fastener applying apparatus; and

    an alignment depression, wherein the alignment depression is spaced apart from the plurality of slots and spaced apart from the central opening; and

    a second member movable in relation to the first member, the second member including an annular second tissue contacting surface and a fixed projection extending therefrom, wherein the fixed projection frictionally fits within the alignment depression of the first tissue contacting surface to inhibit relative axial displacement between the first and second members.

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