Use of a polyurethane foam as a wound dressing in negative pressure therapy

US8772567B2 · kind B2 · utility

Assignee

• PAUL HARTMANN AG · DE

Inventors

• Axel Eckstein · Heidenheim, DE
• Pierre Croizat · Herbrechtingen, DE
• Ulrich Fink · Tuttlingen, DE
• Krzysztof D. Malowaniec · Heidenheim, DE

Key dates

• Filing date: Aug 19, 2011
• Grant date: Jul 8, 2014
• Expiry date: May 21, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61L15/46
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A device for negative pressure wound therapy having a cover material for air-tight sealing of the wound space connected to a negative pressure source; and a wound dressing having an open-cell polyurethane foam. The open-cell polyurethane foam has special properties, in particular a tensile strength after three days of storage in bovine serum, measured in accordance with DIN 53571, between 80 kPa and 300 kPa. The open-cell polyurethane foam may be used as a wound dressing in negative pressure wound therapy.