MULTI-LAYER, ABSORBING WOUND DRESSING HAVING A HYDROPHILIC WOUND CONTACT LAYER

摘要

#CMT# #/CMT# Multi-layer wound dressing comprises a carrier layer, an absorbing layer and a hydrophilic wound contact layer, where the wound contact layer is connected with the absorbing layer and comprises a hydrophilic polyurethane elastomer. #CMT#ACTIVITY : #/CMT# Vulnerary. #CMT#MECHANISM OF ACTION : #/CMT# None given. #CMT#USE : #/CMT# The hydrophilic wound contact layer comprising a hydrophilic polyurethane-elastomer is useful for the production of an agent for active and/or passive support for the tissue construction in wounds preferably in chronic wounds (claimed). The wound dressing is useful for the treatment of wounds. No biological data given. #CMT#ADVANTAGE : #/CMT# The multi-layer wound dressing provides an improved environment for wound healing in the sense that the absorbing layer in the dressing readily absorbs the wound fluids. #CMT#PHARMACEUTICALS : #/CMT# Preferred Components: The hydrophilic wound contact layer further comprises at least an antimicrobial agent. #CMT#POLYMERS : #/CMT# Preferred Components: The absorbing layer is integrally connected with the wound contact layer. The elastomer is an adhesive polyurethane-elastomer or a polyurethane-elastomer-pressure sensitive adhesive. The polyurethane-elastomer is a polyurethane-pressure sensitive adhesive, which comprises less than 4 wt.% of water. The polyurethane-elastomer is obtained by polymerization of at least an aliphatic and/or cycloaliphatic isocyanate-component with a polyetherpolyol-component. The polyurethane-elastomer-pressure sensitive mass is obtained by the polymerization of isophorone diisocyanate or a modified isophorone diisocyanate with at least a diol- or polyol component, preferably 2, 3, 4, 5 or 6 hydroxyl groups exhibiting polyether polyols with hydroxyl number of 20-112 and an ethylene oxide content of >= 10 wt.%, preferably 10-20 wt.%. The wound contact layer exhibits an adhesive force of 0.02-5 N/25 mm. The wound contact layer is a discontinuous wound contact layer. The absorbing layer is a hydrophilic polymer-foam, an absorbing fleece or non-woven, at least a hydrocolloid comprising polymer matrix and/or a freeze-dried foam. The absorbing layer comprises hydrophilic polyurethane foam. The wound dressing exhibits a maximal fluid intake capacity of at least 5000 g/m 2>/24 hour. The carrier layer consists of a polyurethane foam or polyurethane film. The carrier layer and the absorbing layer together consist of a laminate from two different polyurethane foams. The absorbing layer exhibits a highly free absorption as the wound contact layer. The wound dressing further comprises a dispensing layer. #CMT#EXAMPLE : #/CMT# No suitable example given.