Patents Represented by Attorney Samuel Branch Walker

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  • Compacted surgical hemostatic felt
    Patent number: 3937223
    Abstract: Tissue absorbable synthetic polymeric fibers, such as polyglycolic acid, are felted to form a thin mat with at least one, and preferably both, surfaces compacted by contact with a heated embossing surface such as a hot roller. Porosity is reduced but the compacted felt retains its flexibility, and conforms readily to the surface of a bleeding wound to give effective rapid hemostasis. The hemostatic felt is conveniently but not necessarily allowed to remain in place during the healing process and is absorbed by living tissue.
    Type: Grant
    Filed: April 19, 1974
    Date of Patent: February 10, 1976
    Assignee: American Cyanamid Company
    Inventor: Roy William Roth