Fastener cartridge assembly comprising a fixed anvil and different staple heights

  • US 10,159,482 B2
  • Filed: 08/15/2013
  • Issued: 12/25/2018
  • Est. Priority Date: 08/31/2005
  • Status: Active Grant
First Claim
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1. An end effector for a surgical fastening instrument, said end effector comprising:

  • a frame;

    a first jaw, comprising;

    a cartridge body comprising a longitudinal slot configured to receive a cutting member;

    a plurality of fastener cavities defined in said cartridge body;

    a longitudinal row of fastener drivers;

    a longitudinal row of first fasteners removably stored in said cartridge body, wherein said longitudinal row of first fasteners extends alongside said longitudinal slot, and wherein each said first fastener comprises;

    a first base; and

    a first pair of legs extending from said first base in non-parallel directions to one another, wherein a first unfired height is defined by said first base and said first pair of legs; and

    a longitudinal row of second fasteners removably stored in said cartridge body, wherein said longitudinal row of second fasteners extends alongside said longitudinal row of first fasteners, and wherein each said second fastener comprises;

    a second base; and

    a second pair of legs extending from said second base in non-parallel directions to one another, wherein a second unfired height is defined by said second base and said second pair of legs, wherein said second unfired height is different than said first unfired height, and wherein said longitudinal row of first fasteners and said longitudinal row of second fasteners are supported by said longitudinal row of fastener drivers;

    a second jaw extending fixedly from said frame, wherein said second jaw comprises an anvil configured to deform said first fasteners to a first fired height and said second fasteners to a second fired height, wherein said first fired height is shorter than said second fired height, and wherein said anvil comprises fastener forming pockets; and

    a firing member, wherein said firing member comprises a first portion configured to engage said first jaw and a second portion configured to engage said second jaw, wherein said second portion comprises a pin extending laterally therefrom, wherein said second jaw further comprises a second longitudinal slot comprising a T-shaped opening configured to receive said pin of said firing member, and wherein said T-shaped opening extends behind said fastener forming pockets corresponding to said longitudinal row of first fasteners.

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