Retainer assembly including a tissue thickness compensator

  • US 9,833,238 B2
  • Filed: 06/07/2016
  • Issued: 12/05/2017
  • Est. Priority Date: 09/30/2010
  • Status: Active Grant
First Claim
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1. A cartridge assembly system for a surgical stapler, comprising:

  • a staple cartridge, comprising;

    a cartridge body comprising a plurality of staple cavities; and

    a plurality of staples positioned within said staple cavities;

    a retainer, comprising;

    a first retainer plate;

    a second retainer plate;

    a connector connecting said first retainer plate and said second retainer plate, wherein said first retainer plate is pivotable relative to said second retainer plate about said connector; and

    a first cam on one of said first retainer plate and said second retainer plate;

    a first biocompatible layer removably attached to said cartridge body and removably attached to the first retainer plate;

    a second biocompatible layer removably attached to said second retainer plate, wherein said first biocompatible layer and said second biocompatible layer are configured to be captured within said staples and assume different compressed heights within different said staples; and

    a spreader configured to be disposed intermediate said first retainer plate and said second retainer plate and configured to move relative to said retainer between a first position and a second position, said spreader comprising a second cam configured to engage said first cam, and wherein movement of said spreader from said first position to said second position causes relative movement between said first cam and said second cam and causes said first retainer plate and said second retainer plate to pivot away from each other.

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