Three other wound dressings were developed by similar method, namely collagen membrane with polyurethane membrane onlay, polyurethane-coated collagen membrane and collagen membrane on gauze.

• 并以类似的方法研制成聚氨酯膜-胶原海绵复合膜，涂聚氨酯胶原膜，和纱布胶原膜三种创伤敷料。