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SELF-RETAINING SUTURES HAVING EFFECTIVE HOLDING STRENGTH AND TENSILE STRENGTH

  • US 20100298875A1
  • Filed: 08/04/2010
  • Published: 11/25/2010
  • Est. Priority Date: 09/30/2002
  • Status: Active Grant
First Claim
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1. A wound-closure device comprising:

  • a strand of monofilament suture, having a first end, a second end, a longitudinal axis, a surface and a diameter (D), having a minimum knot pull strength requirement (S);

    a plurality of angled cuts made in the surface of the strand and spaced along the strand;

    the plurality of angled cuts made in the surface of the strand defining a plurality of tissue-retaining elements spaced along the strand;

    the plurality of tissue-retaining elements being adapted to permit movement of the strand through tissue in a direction of the first end and resist movement of the strand through tissue in an opposite direction;

    each tissue-retaining element having a tip separated from the strand and a base connected to the strand;

    each tissue-retaining element having a length no less than about 0.8 diameters (0.8*D), measured tip-to-base along the longitudinal axis;

    the tissue-retaining elements being spaced at a distance no larger than two diameters (2*D), measured tip-to-tip along the longitudinal axis; and

    the wound-closure device having a tensile strength no less than about 80% of the USP minimum knot pull strength requirement (S) for monofilament suture of the diameter (D).

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