US 2009/0024068 A1Published application

Absorbable tissue dressing assemblies, systems, and methods formed from a Hydrophilic chitosan sponge structure and including a flexible absorbable backing layer of poly-4-hydroxy butyrate

AssigneeHemCon Medical Technologies, Inc.

InventorsSimon McCarthy, Barbara McGrath, Ervelyn Winata

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Absorbable tissue dressing assemblies are formed from hydrophilic polymer sponge structures, such as chitosan.

Dependent claims

An absorbable tissue dressing assembly comprising

a tissue dressing matrix comprising an absorbable hydrophilic material made from chitosan, and
a flexible absorbable polymer film backing layer consisting essentially of a poly-4-hydroxy butyrate biomaterial.

Dependencies are inferred from the claim text.

A61F 13/00995
For treating webs, e.g. for moisturising, coating, impregnating or applying powder: for mechanical treatments
A61F 13/00063
Accessories for dressings: comprising medicaments or additives, e.g. odor control, PH control, debriding, antimicrobic
A61L 15/28
Containing macromolecular materials: polysaccharides or their derivatives
A61L 15/425
Use of materials characterised by their function or physical properties: porous materials, e.g. foams or sponges

From the US filing history. Foreign family members aren’t listed.

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