Composition for skin healing comprising a chitosan hydrogel

A - Human Necessities – 61 – L

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A61L 15/28 (2006.01)

Patent

CA 2476131

The composition for healing and formation of scar tissue on skin lesions of chronic or acute wounds, comprises exclusively a hydrogel of chitosan, the degree of acetylation of which is greater than 40 % and preferably comprises 2 to 6 %. The embodiment may be a dressing either in the form of a sheet with a reduced thickness of 1 to 10mm, optionally associated with a support sheet, for example made from cellulose, or in the form of particles of reduced size, or furthermore, in the form of a paste comprising ground material. For the latter case the chitosan hydrogel is prepared by milling in water and partially removing the water to give a paste.

La composition pour la réparation et la cicatrisation de lésions cutanées de type plaies chroniques ou aiguës, est constituée exclusivement d'un hydrogel de chitosane dont le degré d'acétylation est au plus de 40%, de préférence compris entre 2 et 6%. II peut s'agir d'un pansement se présentant ou bien sous la forme d'une plaque ayant une épaisseur réduite, de 1 à 10mm, éventuellement associée à une feuille support notamment en cellulose ou bien sous forme de particules de tailles réduites ou encore sous la forme d'une pâte composée de broyats. Dans de dernier cas, on prépare l'hydrogel de chitosane , on le broie dans l'eau et on élimine partiellement l'eau jusqu'à obtention d'une pâte.

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