Patent ID: 7335376

Claim:
A method for photodynamic therapy of an area, site or zone of psoriasis, basal cell carcinoma and skin metastasis of mammary gland carcinoma, the method comprising: sensitizing a surface of the pathological area, site or zone by superimposing an applicator comprising 5-aminolevulinic acid, and irradiating the sensitized area, site or zone with therapeutic optical radiation in the spectral range of 625-700 nm, characterized in that the applicator through which irradiation passes comprises: a base of a bioinert material and a sensitizing layer including a carrier and 5-aminolevulinic acid dissolved or dispersed in the carrier, further characterized in that the base is made in the form of a bioinert polymer, transparent in the spectral range of at least 625-700 nm, and the carrier is made in the form of a film layer of biocompatible hydrophilic copolymers comprising N-vinylpyrrolidone, acrylic acid amide, and ethyl ester of acrylic acid with a ratio of the monomeric links respectively (20-35):(35-60):(20-30) wt. % and a molecular weight of from 20,000 to 1,000,000 Daltons.