Surgical stapling system configured to apply annular rows of staples having different heights

  • US 10,413,297 B2
  • Filed: 04/01/2016
  • Issued: 09/17/2019
  • Est. Priority Date: 04/01/2016
  • Status: Active Grant
First Claim
Patent Images

1. A surgical circular stapler, comprising:

  • a staple cartridge, comprising;

    a cartridge body defining an annular deck surface that defines a centrally disposed knife opening comprising a knife-opening wall;

    a plurality of tissue engaging deck features protruding distally above said annular deck surface and being located around said centrally disposed knife opening and adjacent thereto, at least one said deck feature comprising a deck feature wall that is coextensive with said knife opening wall;

    an inner annular row of staple cavities in said cartridge body;

    at least one first staple positioned within each staple cavity in said inner annular row, wherein each said first staple comprises a first crown and a pair of first legs extending from the first crown and defining a first unformed height;

    an outer annular row of staple cavities positioned radially outward with respect to the inner annular row of staple cavities; and

    at least one second staple positioned within each staple cavity in said outer annular row of staple cavities, wherein each said second staple comprises a second staple crown and a pair of second legs extending from the second crown and defining a second unformed height that is equal to said first unformed height and wherein said surgical circular stapler further comprises;

    an anvil movably supportable relative to said staple cartridge distal thereto and comprising;

    a first staple forming portion facing said annular deck surface and located a first forming distance from said annular deck surface; and

    a second staple forming portion facing said annular deck surface and located a second forming distance from said annular deck surface that differs from said first forming distance.

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