Hydrophilic biopolymeric copolyelectrolytes, and biodegradable wound dressing comprising same

Patent 4570629 Issued on February 18, 1986. Estimated Expiration Date:

September 21, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventor

Widra, Abe

Assignee

University of Illinois Foundation

Application

No. 06/534486 filed on 09/21/1983

US Classes:

604/304, Bandage, pad, or shield placed on body for sustained treatment thereof424/400, PREPARATIONS CHARACTERIZED BY SPECIAL PHYSICAL FORM602/49, Polysaccharide602/50, Amino acid, polypeptide, or protein604/368Collagen or gelling material

Examiners

Primary: Rosenbaum, C. Fred
Assistant: Vinyard, Sherri E.

Attorney, Agent or Firm

Shimei; Barbara A.

International Classes

C08H 1/00 (20060101)
C08H 1/06 (20060101)
A61L 27/34 (20060101)
A61L 27/00 (20060101)
A61L 26/00 (20060101)
A61L 33/00 (20060101)
C08L 5/08 (20060101)
C08L 5/00 (20060101)
A61F 2/00 (20060101)

Abstract

Hydrophilic biopolymeric copolyelectrolytes comprising (a) a water-soluble linear anionic protein polyelectrolyte component derived from keratin and (b) a water-soluble linear cationic biopolymer polyelectrolyte component derived from at least one biopolymer selected from the group consisting of collagen and a glucosaminoglycan. Hydrogel membranes formed from the copolyelectrolytes are useful as biodegradable dressings for denuded tissue wound sites.