Patent ID: 8735363

Claim:
A method for the treatment of a burn and/or a scald, comprising applying a topical preparation containing heparin silver to the burn and/or scald, wherein the heparin silver is prepared according to a method comprising: (a) dissolving a soluble heparin salt in deionized water to obtain a heparin salt solution; (b) adding silver nitrate into the solution obtained in step (a), stirring at room temperature and dissolving; (c) concentrating the solution obtained in step (b) under vacuum at 35-40° C. to precipitate heparin silver, then filtrating to collect the deposit; (d) dissolving the deposit obtained in step (c) in deionized water, then purifying it by dialysis or ultrafiltration; (e) concentrating the solution obtained in step (d) under vacuum at 35-40° C. to obtain a concentrated solution of heparin silver; and (f) freeze-drying the concentrated solution obtained in step (e), or dewatering by adding an organic solvent, collecting the deposit and conventionally drying under vacuum to obtain a finished product; wherein the amount of the added silver nitrate in step (b) is 150-600% by weight of the soluble heparin salt in the solution.