End effectors for surgical staplers

  • US 9,895,147 B2
  • Filed: 10/06/2014
  • Issued: 02/20/2018
  • Est. Priority Date: 11/09/2005
  • Status: Active Grant
First Claim
Patent Images

1. A surgical instrument, comprising:

  • a shaft;

    an end effector extending from the shaft, wherein the end effector comprises;

    an anvil including a staple forming portion;

    a cutting member; and

    a staple cartridge, comprising;

    a cartridge body including a proximal end and a distal end;

    an elongate slot extending between the proximal end and the distal end, wherein the cutting member is movable relative to the elongate slot to cut tissue captured between the anvil and the staple cartridge;

    a deck, comprising;

    a first deck surface; and

    a second deck surface, wherein one of the first deck surface and the second deck surface is stepped up from the other one of the first deck surface and the second deck surface;

    a plurality of first staple cavities arranged in a first row on a lateral side of the elongate slot, wherein the first row extends along the first deck surface;

    a plurality of second staple cavities arranged in a second row on the lateral side of the elongate slot, wherein the second row is closer to the elongate slot than the first row, and wherein the second row extends along the second deck surface;

    a plurality of first staples removably stored in the plurality of first staple cavities, wherein the plurality of first staples comprises;

    a first unformed height;

    a distal staple positioned in the first row; and

    a proximal staple positioned in the first row, wherein the proximal staple is positioned proximally to the distal staple along the first row, and wherein the distal staple and the proximal staple are deployed simultaneously into the tissue captured between the anvil and the staple cartridge; and

    a plurality of second staples removably stored in the plurality of second staple cavities, wherein the plurality of second staples comprises;

    a second unformed height different from the first unformed height; and

    a second staple positioned in the second row, wherein the second staple is deployed simultaneously with the distal staple and the proximal staple in the first row; and

    a control assembly, comprising;

    a control circuit configured to generate a drive signal; and

    a drive unit movable in response to the drive signal to deploy the plurality of first staples and the plurality of second staples.

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