Agar gel topical dressing
AssigneeLaclede Professional Products, Inc.
InventorMichael A. Pellico
Life of this patent
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Abstract
An agar gel topical dressing for coating a burn area or other area of skin impairment is prepared by heating and agitating a mixture of agar, diethylene glycol and water to solubilize the agar. The resulting solution, upon cooling to its gelation temperature, is converted to a thermally reversible agar gel. Application of the agar gel as a burn coating is undertaken by heating the gel to obtain a sol, applying the sol to the burn area at a tissue compatible temperature, and allowing the sol to cool and set in the form of a gel.
Claims13
An agar gel topical dressing, which comprises about 5 to about 12 wt.% agar, about 20 to about 75 wt.% diethylene glycol and water to 100 wt.%.
A method for preparing a thermally reversible, agar gel topical dressing having a gelation temperature from about 24.degree. to abour 49.degree. C, which comprises heating and agitating an admixture containing about 5 to about 12 wt.% agar, about 20 to about 75 wt.% diethylene glycol and water to 100 wt.% to solubilize the agar and allowing the resulting solution to cool and set in the form of a gel.
A method for applying an agar gel topical dressing to a burn area or other area of skin impairment, which comprises:
- (a) heating a thermally reversible, agar gel topical dressing containing about 5 to about 12 wt.% agar, about 20 to about 75 wt.% diethylene glycol and water to 100 wt.% to obtain a sol, said sol having a gelation temperature from about 24.degree. to about 49.degree. C.;
- (b) applying the sol at a tissue compatible temperature to the burn area or other area of skin impairment;
- and
- (c) allowing the sol to cool and set in the form of a gel.
Dependencies are inferred from the claim text.