Hemostatic wound dressing and method of making same
AssigneeEthicon, Inc.
InventorsJian Xin Guo, Dwayne Lee Looney, Guanghui Zhang, Anne Jessica Gorman
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Abstract
The present invention is directed to wound dressings that contain a fabric made from biocompatible polymeric fibers and having flexibility, strength and porosity effective for use as a hemostat, and a porous, polymeric matrix prepared from a biocompatible, water-soluble or water-swellable polymer dispersed through the fabric; and to methods of making such wound dressings.
Claims9
A process for making a wound dressing for use with moderate to severe bleeding, the wound dressing comprising a fabric that comprises oxidized regenerated cellulose fibers and a biocompatible, water-soluble or water-swellable polymer matrix of sodium carboxymethyl cellulose, the process consisting of the steps of:
- providing a solution having dissolved therein sodium carboxymethyl cellulose,
- providing a fabric having a top surface and a bottom surface opposing said top surface, said fabric having flexibility, strength and porosity effective for use as a hemostat,
- immersing said fabric at least partially in said solution to distribute said solution at least partially through said fibers,
- lyophilizing said fabric and said solution distributed at least partially through said fibers, thereby forming a porous polymeric matrix at least partially integrated with or about the fibers having a microporous structure with a large fluid absorbing capacity.
Dependencies are inferred from the claim text.