Patent ID: 7799352

Claim:
A hydrogel for the treatment of atopic dermatitis, comprising 1-50% by weight of a biocompatible polymer, 1-20% by weight of a polyalcohol, and 1-30% by weight of a medicinal plant extract obtained from a plant mixture of 5-25% by weight of Houttuynia cordata, 5-25% by weight of elm, 5-25% by weight of persimmon leaves, 5-25% by weight of celandine, 5-25% by weight of pine tree leaves, 5-10% by weight of Canavalia gladiata and 5-30% by weight of an herb selected from the group consisting of rosemary, lavender, spearmint, chamomile, rooibos and combinations thereof, wherein the hydrogel is prepared by irradiation to achieve crosslinking and sterilization of the hydrogel, the hydrogel contains a three-dimensional network structure formed by crosslinking; and the hydrogel is insoluble in water.