Fastener cartridge assembly comprising a driver row arrangement

  • US 9,844,373 B2
  • Filed: 08/20/2013
  • Issued: 12/19/2017
  • 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 proximal portion;

    a distal portion;

    a first jaw, comprising;

    a plurality of fastener cavities;

    a first longitudinal slot configured to receive a cutting member;

    a first longitudinal row of first fasteners removably stored in said first jaw, wherein said first longitudinal row of first fasteners extends between said proximal portion and said distal portion alongside said first longitudinal slot, and wherein each said first fastener comprises;

    a base;

    a first leg extending from said base in a first direction; and

    a second leg extending from said base in a second direction, wherein said first direction is not parallel to said second direction; and

    a second longitudinal row of second fasteners removably stored in said first jaw, wherein said second longitudinal row of second fasteners extends between said proximal portion and said distal portion alongside said first longitudinal row of first fasteners;

    a second jaw extending fixedly from said frame, wherein said second jaw comprises an anvil configured to deform said fasteners, and wherein said anvil comprises a plurality of forming pockets;

    a firing member movable longitudinally toward said distal portion, 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 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 forming pockets corresponding to said first longitudinal row of first fasteners; and

    a fastener driver, wherein said fastener driver supports a first fastener from said first longitudinal row and a second fastener from said second longitudinal row, wherein said first fastener is positioned distally with respect to said second fastener, wherein said firing member is configured to lift said fastener driver toward said anvil, wherein said fastener driver and said anvil are configured to co-operate to deform said first fastener to a first fired height and to deform said second fastener to a second fired height, and wherein said first fired height is shorter than said second fired height to provide a smaller tissue compression space within said first fastener than said second fastener.

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