[Preparation and clinical application of human dermis collagen protein-membrane]

The discarded human dermis was collected after skin grafting and the collagen was extracted by using pepsin-controlling degration method. Under vacuum and frozen condition, the white-clear, frothy, pliable collagen membrane of the human dermis was obtained. The collagen membrane can be easily stored, transported, and used under normal temperature. The collagen membrane with spongiform structure has better water-permeability, adhesiveness, flexibility and less antigen. It was used to cover the wound surface of crust-excised in 7 cases of burn with satisfactory results.