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Composite self-retaining sutures and method

  • US 9,044,225 B1
  • Filed: 01/12/2012
  • Issued: 06/02/2015
  • Est. Priority Date: 12/20/2007
  • Status: Active Grant
First Claim
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1. A surgical suture comprising an elongated filament and a plurality of retainers wherein:

  • the elongated filament is a composite filament including, a core portion formed of a first material and an sheath portion formed of a second material said plurality of retainers being formed in said sheath portion;

    wherein the first material has higher tensile strength than the second material and where the first material comprises a material that expands when exposed to moisture, andwherein the second material is more easily plastically deformed than the first material and where the second material does not expand when exposed to moisture;

    such that expansion of at least some of the core portion causes elevation of said plurality of retainers.

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