Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Composite having voids in a component
Patent
1998-02-18
2000-08-08
McAvoy, Ellen M.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Composite having voids in a component
4283184, 4283193, 424 7806, 424488, 604369, 6043851, 427 231, A61K 900, A61F 1300, B32B 500
Patent
active
060999527
ABSTRACT:
A sponge consisting of a sponge material, such as a polyvinyl alcohol sponge material having a coating of a non adherent mucopolysaccharide, hyaluronic acid ester. The ester can be applied to surfaces of the sponge or can be a uniformly dispersed interstitial gel of an esterified mucopolysaccharide, such as hyaluronic acid, formed by cross linking polyvinyl alcohol with various organic compounds containing carbonyl groups in the presence of acid catalysts, and reacting unreacted portions of the polyvinyl alcohol with the mucopolysaccharide to esterify the mucopolysaccharide and copolymerize the ester with the polyvinyl alcohol.
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McAvoy Ellen M.
Xomed Surgical Products, Inc.
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