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Surgical stapling apparatus including buttress attachment

  • US 10,420,556 B2
  • Filed: 12/07/2016
  • Issued: 09/24/2019
  • Est. Priority Date: 11/09/2012
  • Status: Active Grant
First Claim
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1. A surgical stapling loading unit including a first jaw and a second jaw movable relative to one another to perform a surgical stapling operation, the loading unit comprising:

  • a cartridge assembly supportable on the first jaw, the cartridge assembly having a tissue contacting surface defining an elongate slot having a knife blade disposed therein;

    an anvil assembly supported on the second jaw, the anvil assembly including an anvil plate having a tissue contacting surface defining an elongate slot configured to receive the knife blade;

    a surgical buttress including a continuous body portion defined by a proximal edge, a distal edge, a first side edge, and a second side edge, the surgical buttress having a first flap extending from the first side edge of the body portion and a second flap extending from the second side edge of the body portion;

    a length of suture securing the body portion of the surgical buttress against the tissue contacting surface of the cartridge assembly or the anvil assembly and the first and second flaps against side surfaces of the cartridge assembly or the anvil assembly, the length of suture extending transversely across a proximal portion of the surgical buttress, through the first flap, transversely across a distal portion of the surgical buttress, and through the second flap such that the length of suture is disposed in a looped configuration with end portions of the length of suture secured to one another and overlying the proximal portion of the surgical buttress, the proximal and distal portions overlying the elongate slot of the cartridge assembly or the anvil assembly, and the knife blade movable through the elongate slot from a proximal position to a distal position such that the knife blade cuts the length of suture at both the distal and proximal portions of the surgical buttress thereby releasing the surgical buttress from the tissue contacting surface; and

    a retaining feature securing the length of suture to the cartridge assembly or the anvil assembly such that the length of suture remains secured to the cartridge assembly or the anvil assembly when the surgical buttress is released therefrom.

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