Patent ID: 8772567
Filing Date: 2014-07-08
Classification: A61F,A61L

Abstract:
1. A device for negative pressure wound therapy comprising (a) a cover material for air-tight sealing of a wound space; (b) optionally, a connector of a negative pressure source; and (c) an open-cell polyurethane foam as a wound dressing, obtained by reaction of a mixture comprising the components (i) polyisocyanate, (ii) polyol, (iii) blowing agent, and (iv) catalyst, whereby the open-cell foam, after three days of storage in bovine serum, has a tensile strength, measured in accordance with DIN 53571, between 80 kPa and 300 kPa, and whereby the open-cell polyurethane foam has an air permeability of 1,000 to 8,000 l/(m