Surgical stapling instrument

  • US 9,687,231 B2
  • Filed: 10/21/2013
  • Issued: 06/27/2017
  • Est. Priority Date: 02/13/2008
  • Status: Active Grant
First Claim
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1. A surgical stapler, wherein the surgical stapler comprises a cartridge channel, and wherein said surgical stapler comprises:

  • a staple cartridge body comprising;

    a longitudinal channel;

    a plurality of staples;

    a plurality of staple drivers;

    a staple sled; and

    a cutting member positioned within said staple cartridge body prior to said staple cartridge body being assembled into the cartridge channel of the stapler, wherein said cutting member comprises an engagement portion configured to be engaged with a firing member of the stapler, wherein said cutting member is configured to be slid between a first position and a second position within said longitudinal channel; and

    an anvil assembly comprising;

    a tissue-supporting surface; and

    a plurality of staple cavities, wherein said staple cavities are positioned along a curve, and wherein each said staple cavity comprises;

    a staple cavity centerline, wherein a said staple cavity centerline of a first staple cavity is neither parallel to nor collinear with a said staple cavity centerline of a second staple cavity;

    a first forming cup, comprising;

    a first inside portion;

    a first outside portion; and

    a first interior sidewall extending between said first outside portion and said first inside portion, wherein said first interior sidewall comprises a first vertical portion which is substantially perpendicular to said tissue-supporting surface; and

    a second forming cup, comprising;

    a second inside portion;

    a second outside portion, wherein said first inside portion is positioned in close relation to said second inside portion, wherein said first inside portion and said second inside portion are positioned offset with respect to said staple cavity centerline, wherein said first outside portion and said second outside portion are positioned on opposite sides of said first inside portion and said second inside portion, and wherein said first outside portion and said second outside portion are oriented in a direction which is transverse to said staple cavity centerline; and

    a second interior sidewall extending between said second outside portion and said second inside portion, wherein said second interior sidewall comprises a second vertical portion which is substantially perpendicular to said tissue-supporting surface.

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