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US 10,800,905 B2Granted
Resilient foams and uses thereof
AssigneeSmith & Nephew, Inc.
InventorsGeorge T. Delli-Santi, Helawe Betre
Life of this patent
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Abstract
Disclosed is a resilient foam and methods of making the foam. The resilient foam includes a derivatized polyanionic polysaccharide and has an open-cell structure. When the resilient foam is contacted with water, the foam forms a thixotropic hydrogel.
Claims19
A method of preparing a resilient foam, the method comprising:
- (a) obtaining a hydrogel comprising a derivatized polyanionic polysaccharide, wherein the hydrogel is a thixotropic hydrogel;
- (b) subjecting the hydrogel to conditions to freeze water comprised in the hydrogel;
- (c) subjecting the hydrogel from step (b) to a drying step to form an open-cell foam;
- and
- (d) contacting the open-cell foam from step (c) with water to form the resilient foam.
2 more elements
Dependencies are inferred from the claim text.