Surgical apparatus and instruments for medical, dental or veterinary use; artificial limbs; artificial eyes; artificial teeth; orthopedic apparatus and instruments for diagnostic and therapeutic use; suture materials; surgical implants comprising artificial material; wound drainage apparatus; drainage tubes for medical purposes; medical tubing for drainage; cannulae; subcutaneous valves for implantation; valves for the treatment of hydrocephalus and accessories and parts therefor, namely, med...