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Method for making a reinforced absorbable multilayered hemostatic wound dressing

  • US 20060257457A1
  • Filed: 04/10/2006
  • Published: 11/16/2006
  • Est. Priority Date: 10/20/2004
  • Status: Abandoned Application
First Claim
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1. A method for making a multilayered wound dressing having a first absorbable nonwoven fabric, one or more second absorbable woven or knitted fabric, thrombin and/or fibrinogen, comprising the steps of:

  • (a) crimping absorbable polymer fibers or yarns in the range of about 10 to 30 crimps per inch;

    (b) cutting the crimped fibers or yarns to a staple length between about 0.1 and 2.5 inch;

    (c) carding the staple to form the first absorbable nonwoven fabric while controlling the humidity to about 20 to 60%, at a room temperature of about 15 to 24°

    C.;

    (d) attaching the first absorbable nonwoven fabric to the second absorbable woven or knitted fabric;

    (e) applying thrombin and/or fibrinogen to the first absorbable nonwoven fabric.

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