Surgical end effector for forming staples to different heights

  • US 10,932,774 B2
  • Filed: 06/26/2018
  • Issued: 03/02/2021
  • 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 end portion;

    a first jaw, comprising;

    a cartridge;

    a plurality of fastener cavities defined in said cartridge;

    a slot configured to receive a cutting member;

    a row of first fasteners removably stored in said cartridge, wherein said row of first fasteners extends between said proximal portion and said distal end portion alongside said slot, and wherein each said first fastener comprises a first unformed height;

    a row of second fasteners removably stored in said cartridge, wherein said row of second fasteners extends between said proximal portion and said distal end portion alongside said row of first fasteners, and wherein each said second fastener comprises a second unformed height;

    a row of first fastener drivers, wherein each said first fastener driver comprises a first cradle, wherein each said first cradle is configured to support one of said first fasteners; and

    a row of second fastener drivers, wherein each said second fastener driver comprises a second cradle, wherein each said second cradle is configured to support one of said second fasteners;

    a second jaw extending from said frame, wherein said second jaw comprises an anvil configured to deform said first fasteners and said second fasteneres, wherein said cartridge is movable toward said anvil to place said end effector in a closed configuration, and wherein said anvil comprises;

    a longitudinal row of first fastener forming pockets, wherein each said first fastener forming pocket comprises a first pocket base, wherein said row of first fasteners is aligned with said longitudinal row of first fastener forming pockets when said end effector is in said closed configuration, and wherein each said first cradle is a first distance from a corresponding said first pocket base when said end effector is in said closed configuration; and

    a longitudinal row of second fastener forming pockets, wherein each said second fastener forming pocket comprises a second pocket base, wherein said row of second fasteners is aligned with said longitudinal row of second fastener forming pockets when said end effector is in said closed configuration, wherein each said second cradle is a second distance from a corresponding said second pocket base when said end effector is in said closed configuration, and wherein said first distance is different than said second distance; and

    a firing member movable toward said distal end portion to lift said first fastener drivers and said second fastener drivers toward said anvil during a firing stroke, wherein said first cradles of said first fastener drivers and said first pocket bases of said first fastener forming pockets cooperate to deform said first fasteners to a first fired height, wherein said second cradles of said second fastener drivers and said second pocket bases of said second fastener forming pockets cooperate to deform said second fasteners to a second fired height, and wherein said first fired height is different than said second fired height.

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