Wound-covering hydrogel material

A - Human Necessities – 61 – L

Patent

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A61L 15/16 (2006.01)

Patent

CA 2714490

A wound-covering hydrogel material which has excellent strechability and absorbs exudates from wounds. It can maintain over long a wet environment which is suitable for accelerating the healing of wounds. There is no fear of causing pain or damaging the regenerated skin when the wound--covering hydrogel material is replaced with a fresh one. The wound- covering hydrogel material prepared by spreading a hydrogel comprising a water-soluble semi-synthetic polymer, glycerol and water, on a laminated two-layer film composed of a polyurethane film and hydrophobic fibers. The covering material has a moisture permeability as measured by the cup method in accordance with JIS Z0208 of 500-2,000(g/m2/24h).

L'invention porte sur une matière à base d'hydrogel de recouvrement d'une plaie qui a une excellente extensibilité à l'étirement et absorbe les exsudats provenant des plaies. Elle peut maintenir pendant longtemps un environnement humide qui est approprié pour accélérer la cicatrisation des plaies. Il n'y a aucune crainte de provoquer une douleur ou un endommagement de la peau régénérée lorsque la matière à base d'hydrogel de recouvrement de la plaie est remplacée par une fraîche. La matière à base d'hydrogel de recouvrement d'une plaie comprend : un film à bicouches stratifié composées d'un film de polyuréthane et de fibres hydrophobes ; et un hydrogel étalé sur le film stratifié, l'hydrogel comprenant un polymère (semi)synthétique soluble dans l'eau, du glycérol et de l'eau. La matière de recouvrement a une perméabilité à l'humidité telle que mesurée par la méthode à la coupelle conformément à JIS Z0208 de 500-2000 (g/m2/24h).

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