Stapling assembly for forming different formed staple heights

  • US 9,757,130 B2
  • Filed: 03/12/2014
  • Issued: 09/12/2017
  • Est. Priority Date: 02/28/2007
  • Status: Active Grant
First Claim
Patent Images

1. An end effector for fastening tissue, comprising:

  • a cartridge comprising a plurality of staple cavities, wherein said plurality of staple cavities are arranged in a first longitudinal row of staple cavities and a second longitudinal row of staple cavities, wherein said cartridge further comprises a deck configured to support tissue, and wherein said deck comprises;

    a first tissue-supporting surface, wherein said first longitudinal row of staple cavities is defined in said first tissue-supporting surface;

    a second tissue-supporting surface, wherein said second longitudinal row of staple cavities is defined in said second tissue-supporting surface; and

    a sloped wall defined between said first tissue-supporting surface and said second tissue-supporting surface;

    a plurality of first staples removably stored within said first longitudinal row of staple cavities, wherein each said first staple comprises;

    a first base comprising a first bottom surface;

    a pair of first legs extending from said first base, wherein said first legs extend in directions which are not parallel to each other, and wherein each said first leg comprises a first tip configured to pierce tissue; and

    a first preformed height measured between said first bottom surface and said first tip;

    a plurality of second staples removably stored within said second longitudinal row of staple cavities, wherein each said second staple comprises;

    a second base comprising a second bottom surface;

    a pair of second legs extending from said second base, wherein said second legs extend in directions which are not parallel to each other, and wherein each said second leg comprises a second tip configured to pierce tissue; and

    a second preformed height measured between said second bottom surface and said second tip;

    a planar anvil comprising forming pockets, wherein said anvil is configured to deform said first staples to a first deformed height and said second staples to a second deformed height, wherein said first deformed height is different than said second deformed height;

    a plurality of staple drivers, wherein said staple drivers are configured to lift said first staples and said second staples toward said anvil; and

    a firing member configured to lift said staple drivers toward said anvil, wherein said firing member comprises a first portion configured to engage said anvil and a second portion configured to engage said cartridge, wherein said first portion comprises a first pin and a second pin extending horizontally from said first portion, wherein said anvil comprises a first slot comprising a T-shaped opening configured to receive said first pin and said second pin of said firing member, wherein said T-shaped opening behind said forming pockets corresponding to said first longitudinal row of staple cavities, wherein said cartridge comprises a second slot configured to receive said second portion of said firing member, and wherein said firing member is configured to relatively position said anvil and said cartridge.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×