Medical apparatus and instruments included in this class, including artificial limbs, eyes, and teeth; orthopaedic articles; suture material; air humidifiers for medical use and parts therefor included in this class; heating blankets for medical use; filters for medical ventilation systems, tubes, couplings and valves for medical ventilators, tubes and couplings for anaesthetic systems, carbon dioxide absorbers, anaesthetic vaporisers, anaesthetic masks, anaesthetic bladders