Bioactive and biocompatible polyurethane-buthanediol-glycosaminoglycan salt copolymers
First Claim
1. A copolymer comprising the polymerization reaction product of a biocompatible polyurethane and a bioactive polysaccharide, wherein the bioactive polysaccharide is incorporated into the polyurethane backbone of the copolymer.
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Accused Products
Abstract
A bioactive and biocompatible polyurethane-butanediol-glycosaminoglycan copolymer for use in medical implant devices. The biocompatible urethane component being the reaction product of 4,4′-methylene-di-(p-phenyl isocyanate) and poly(tetramethylene oxide)n and further reacted with 1,4-butanediol, wherein n=10 to 40. The bioactive glycosaminoglycan being a salt of hyaluronic acid, such as a cetylpyridinium salt acid having 5 to 10,000 repeating units or a salt of heparin, such as a dimethyldioctadecylammonium salt of heparin has 5 to 65 repeating units or a suitable salt of dermatan sulfate. The weight content of the bioactive glycosaminoglycan is an amount sufficient to render the copolymer bioactive. The copolymers described herein have excellent hemocompatibility and biocompatibility.
21 Citations
24 Claims
- 1. A copolymer comprising the polymerization reaction product of a biocompatible polyurethane and a bioactive polysaccharide, wherein the bioactive polysaccharide is incorporated into the polyurethane backbone of the copolymer.
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12. A method of making a bioactive and biocompatible polyurethane-diol-polysaccharide copolymer comprising:
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reacting a suitable isocyanate-containing molecule and a suitable poly(C2-10 alkylene oxide)n to produce a diisocyanate reactant, and, reacting the diisocyanate reactant with a suitable C4-50 diol-containing molecule and a bioactive polysaccharide, wherein n=10 to 40, wherein the C2-10 alkylene is linear or branched, substituted or un-substituted, and, wherein the C4-50 is linear or branched, substituted or un-substituted. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of making a bioactive and biocompatible polyurethane-butanediol-glycosaminoglycan salt copolymer comprising:
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reacting 4,4′
-methylene-di-(p-phenyl isocyanate) and poly(tetramethylene oxide)n to produce a diisocyanate reactant, and,reacting the diisocyanate reactant with 1,4-butanediol and a bioactive glycosaminoglycan salt selected from the group consisting of a suitable salt of hyaluronic acid and a suitable salt of heparin, wherein n=10 to 40. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification