US 7,115,792 B2 · Scar-reducing plaster

Abstract

The present invention is a scar-reducing plaster and a method for preparing scar-reducing plasters. The scar-reducing plasters comprise a backing film comprising an air- and water vapor-pervious and water-impervious polymer layer, and a breathable and adhesive polyurethane xerogel matrix layer that coats the backing film. The polyurethane xerogel matrix layer includes a central scar contact region and an edge region, wherein the scar contact region merges with the edge region and the thickness of the edge region decreases from the scar contact region to a thickness of from 5 to 150 μm at the edge of the polyurethane xerogel matrix layer. The scar-reducing plasters of the present invention have a reduced tendency to peel off during normal use.

Claims16

Dependent claims

A scar-reducing plaster, comprising

a backing film comprising an air- and water vapor-pervious and water-impervious polymer layer, and
a breathable and adhesive polyurethane xerogel matrix layer coating the backing film, the polyurethane xerogel matrix layer including a central scar contact region and an edge region, wherein the scar contact region merges with the edge region and the thickness of the edge region decreases from the scar contact region to a thickness of from 5 to 150 μm at the edge of the polyurethane xerogel matrix layer.

Dependencies are inferred from the claim text.

Facts

Application

10/948,622Filed 22 Sep 2004 · continuation

Priority

DE 102 12 86622 Mar 2002

Published

US 2005/0095276 A15 May 2005

Granted

3 Oct 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification5 codes

A61L 15/60
Use of materials characterised by their function or physical properties: liquid-swellable gel-forming materials, e.g. super-absorbents
A61L 15/26
Containing macromolecular materials: macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated…
A61L 15/42
Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons: use of materials…
A61L 15/425
Use of materials characterised by their function or physical properties: porous materials, e.g. foams or sponges

Scar-reducing plaster

Life of this patent

Scar-reducing plaster

Life of this patent

Abstract

Claims16