Tissue thickness compensator comprising tissue ingrowth features

  • US 10,441,285 B2
  • Filed: 12/22/2014
  • Issued: 10/15/2019
  • Est. Priority Date: 03/28/2012
  • Status: Active Grant
First Claim
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1. A staple cartridge for stapling the tissue of a patient, comprising:

  • a cartridge body, wherein a plurality of staple cavities are defined in the cartridge body;

    a plurality of staples removably positioned in the staple cavities; and

    a compressible tissue thickness compensator releasably secured relative to the cartridge body, wherein the tissue thickness compensator is configured to adapt in thickness in response to the thickness of the tissue and adaptively apply different pressures to the tissue based on the thickness of the tissue captured within the staples, wherein the compressible tissue thickness compensator comprises a plurality of fibers, and wherein the plurality of fibers comprises;

    a first matrix of fibers oriented in a first direction, wherein the first matrix of fibers comprises a first set of material properties comprising a first medicament absorbed into the first matrix of fibers; and

    a second matrix of fibers oriented in a second direction, wherein the second matrix of fibers comprises a second set of material properties comprising a second medicament absorbed into the second matrix of fibers, wherein the second medicament is different than the first medicament, wherein the second direction is different than the first direction, wherein a network of interstices is defined intermediate and among the first matrix and the second matrix, wherein the network of interstices comprises a plurality of cavities, and wherein the plurality of cavities within the network of interstices promotes tissue and cellular ingrowth between the first and second matrices of fibers.

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