Implantable layers and methods for altering one or more properties of implantable layers for use with fastening instruments

  • US 9,884,456 B2
  • Filed: 02/24/2014
  • Issued: 02/06/2018
  • Est. Priority Date: 02/24/2014
  • Status: Active Grant
First Claim
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1. A method for changing the spring rate of a tissue thickness compensator for use with a surgical instrument, said method comprising the steps of:

  • obtaining a tissue thickness compensator comprising a first spring rate, wherein said tissue thickness compensator is at least partially comprised of a material having a glass transition temperature and a melting temperature;

    heating said tissue thickness compensator to a temperature higher than said glass transition temperature and lower than said melting temperature;

    deforming said tissue thickness compensator to induce a localized change in a tissue-facing portion of said tissue thickness compensator from said first spring rate to a second spring rate, wherein said second spring rate is different than said first spring rate;

    allowing said tissue thickness compensator to cool below said glass transition temperature; and

    releasing said tissue thickness compensator.

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