Implantable or graftable medical devices comprising material derived from living tissue [ for orthopedic and spinal applications and ] for use in the treatment of the nerve, dura mater, skin, [ bone ] or tendon; [ bone graft substitute comprising material derived from living tissue; ] tissue regeneration matrices comprising material derived from living tissue; human allograft tissue; wound dressings; dressings for surgical use; dressings for dental use; pharmaceutical preparation comprising collagen used for neurosurgery, [ orthopedic surgery, spine surgery, ] reconstructive surgery, and plastic surgery