Implantable layer comprising a constricted configuration

  • US 10,478,188 B2
  • Filed: 09/30/2015
  • Issued: 11/19/2019
  • Est. Priority Date: 09/30/2015
  • Status: Active Grant
First Claim
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1. A staple cartridge assembly, comprising:

  • a cartridge body comprising a deck;

    a plurality of staples; and

    an implantable layer positioned over said deck, wherein said implantable layer comprises;

    a first plurality of fibers comprised of a first material having a first thermal transition temperature, wherein said first fibers are interconnected at a plurality of nodes, wherein said plurality of nodes define a plane, and wherein said plurality of nodes is configured to reinforce a three-dimensional structure of said implantable layer; and

    a second plurality of fibers comprised of a second material having a second thermal transition temperature, wherein said second thermal transition temperature is lower than said first thermal transition temperature, wherein said second material is intermixed with said first material, wherein said second fibers are contracted within said implantable layer during a process which exposes said implantable layer to a process temperature which exceeds said second thermal transition temperature, and wherein a first portion of said second fibers are constricted at said plurality at nodes and a second portion of said second fibers are laterally expanded away from said plane.

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