Solid polysaccharide materials for use as wound dressings
OwnerCarla A. Haynes, Elaine Lorimerinventors
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Abstract
Solid, bioabsorbable materials for use as wound dressings comprise at least 50% by weight of a mixture of xanthan and at least one galactomannan, such as guar gum or locust bean gum. The weight ratio of xanthan: total galactomannans is in the range 1:99 to 99:1, preferably 10:99 to 99:10. The material is preferably made in the form of a sponge by freeze drying a mixed aqueous gel of the xanthan and galactomannans.
Claims10
A solid bioabsorbable material for use as a wound dressing, said material comprising at least 50% by weight of a mixture of xanthan and at least one galactomannan such that the weight ratio of xanthan to total galactomannan is in the range of 1:99 to 99:1 wherein the material is in the form of sponge and said sponge material is made from a solution comprising less than 1 weight percent solids of the mixture of xanthan and a galactomannan.
A method of making a solid bioabsorbable material for use as a wound dressing, the method comprising:
- dispersing at least 50% by weight of a mixture comprising xanthan and at least one galactomannan such that the weight ratio of xanthan to total galactomannan is in the range of 1:99 to 99:1 in a solvent to form a mixed dispersion wherein the mixture comprises a solution of less than 1 weight percent solids of xanthan and galactomannan in said dispersion, and freeze-drying the dispersion to reduce said material in the form of a sponge.
Dependencies are inferred from the claim text.