US 7,604,816 B2Granted

Bio-absorbable collagen-based wound dressing

AssigneeRESORBA Wundversorgung GmbH & Co. KG

InventorsClaus M. Hiltner, Karl-Heinz Sorg, Ton Pieter Alblas

Life of this patent

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Abstract

A collagen-based bio-absorbable wound dressing which contains a linear polymer biguanide and/or a water-soluble salt thereof. The biguanide is preferably polyhexamethylene biguanide. The bio-absorbable wound dressing has a long residence time in the body, is extremely well tolerated and leads to rapid and uncomplicated wound healing with clearly reduced infection risk.

Claims20

Dependent claims

Bio-absorbable wound dressing, comprising a collagen-based material which contains at least one of a linear polymer biguanide and a water-soluble salt thereof.

Dependencies are inferred from the claim text.

Facts

Application: 11/122,243Filed 5 May 2005
Priority: DE 10 2004 022 6457 May 2004
Published: US 2005/0260251 A124 Nov 2005
Granted: 20 Oct 2009
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

A61L 15/325
Proteins, polypeptides; Degradation products or derivatives thereof, e.g. albumin, collagen, fibrin, gelatin: collagen
A61L 15/20
Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons: containing organic materials
A61L 15/46
Use of materials characterised by their function or physical properties: deodorants or malodour counteractants, e.g. to inhibit the formation of…
A61L 2300/206
With nitrogen-containing functional groups, e.g. aminoxides, nitriles, guanidines: biguanides, e.g. chlorohexidine

Family

US 2005/0260251 A1Pre-grant publication · published 24 Nov 2005
US 7,604,816 B2This patent

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

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