Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Internal tissues
Patent
1995-06-07
1997-10-07
Diamond, Alan D.
Bleaching and dyeing; fluid treatment and chemical modification
Treatment of hides, skins, feathers and animal tissues
Internal tissues
623 1, 623 2, 623 3, 623 4, 623 7, 623 9, 623 10, 623 11, 623 12, 623 13, 623 14, A61F 202
Patent
active
056742983
ABSTRACT:
Naturally-derived bioprosthetic materials are treated with epoxide crosslinking agents. In some embodiments, the tissue is crosslinked with low molecular weight epoxides in aqueous solutions at high pH levels. In other embodiments, the tissue is crosslinked at physiologic pH levels with epoxide crosslinking agents catalyzed with tertiary or quaternary amines, such as Tris or imidazole. In an advantageous embodiment, bioprosthetic tissue is crosslinked and derivatized with an anticalcification agent, such as a polyphosphonate anticalcification agent, using a polyphosphonate:polyepoxide monoadduct.
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Lerner Eyal
Levy Robert J.
Diamond Alan D.
The Board of Regents of the University of Michigan
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