Surgical, medical, dental and veterinary apparatus and instruments; prostheses included in this class; valves included in this class; implantable speaking valves and voice prostheses; goods for voice-box prostheses, namely tracheal tubes, tracheal cannulae, speaking valves, heat and moisture exchanger devices, surgical and medical devices for insertion and cleaning of voice prosthesis, tracheostoma valves, speaking valves for tracheostoma tubes, implantable voice ventilators