Non-porous collagen sheet for therapeutic use, and the method and apparatus for preparing it

摘要

Type I collagen gel with an H.sub.2 O content not exceeding 20% by weight, in the form of a sheet of thickness between 0.02 and 2 mm, of compact transparent structure, with a capacity for absorbing aqueous biological liquids limited to a maximum of 15 times its weight, being free from native collagen degradation products, and suitable for the therapeutic treatment of wounds and burns.