Wound covering and production process

US7994381B2 · kind B2 · utility

Assignee

• Collano AG · CH

Inventors

• Catherine Baron · Magstatt-le-Bas, FR
• Alfred Rasche · Dormagen, DE
• Fabian Leuthard · Merenschwand, CH
• Adrian Schulthess · Tentlingen, CH
• Andreas Dobmann · Oberkirch, CH
• Manuel Leumann · Beinwil am See, CH
• Dirk Clasen · Buxtehude, DE

Key dates

• Filing date: Oct 30, 2007
• Grant date: Aug 9, 2011
• Expiry date: Apr 19, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T156/1062
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The invention relates to a production process for a foam wound dressing having an external germ barrier, more particularly a film layer, and also to a wound dressing thus obtained, having, where appropriate, a pressure-sensitive adhesive layer. In the process according to the invention the germ barrier is produced by means of extrusion directly on the foam base. This results in a more reliable bond between foam layer and germ barrier, without detriment to the absorptiveness of the foam for wound exudate. The process presented is simple and cost-effective, and all of the requirements from the medical sector (e.g. absence of solvent) can be met.