Protein nonadsorptive membranes for wound dressings
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United States of America Patent
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Oct 31, 1995
Issued Date -
N/A
app pub date -
Jul 14, 1993
filing date -
Jan 24, 1992
priority date (Note) -
Expired
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Abstract
Controlled release membranes are prepared from polyureaurethane polymer derived from prepolymer units at least 75% of which are oxyethylene-based diols or polyols having essentially all of the hydroxyl groups capped with polyisocyanate are disclosed. The membranes are characterized by their biocompatibility and resistance to nonspecific protein adsorption and are particuarly useful for delivery of proteinaceous materials in drug-delivery systems, i.e., wound dressings. Also disclosed are novel biocompatible, protein-nonadsorptive hydrated polymers and the method of producing the same.
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