Dry hemostatic compositions and methods for their preparation

Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Implant or insert

Reexamination Certificate

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C424S423000

Reexamination Certificate

active

07871637

ABSTRACT:
Dry cross-linked gelatin compositions are prepared that rapidly re-hydrate to produce gelatin hydrogels suitable as hemostatic sealants. Gelatin is cross-linked in the presence of certain re-hydration aids, such as polyethylene glycol, polyvinylprovidone, and dextran, in order to produce a dry cross-linked gelatin powder. The use of the re-hydration aids has been found to substantially increase the re-hydration rate in the presence of an aqueous re-hydration medium, typically thrombin-containing saline.

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