Medical and surgical apparatus and instruments; medical equipment for the purpose of delivering oxygen and/or humidification therapy; respiratory apparatus and instruments; humidification apparatus; invasive and non-invasive ventilation apparatus and instruments; apparatus and instruments for bi-level therapy; apparatus and equipment for the treatment of respiratory diseases and conditions; breathing tubes used in the delivery of air and gases to and away from patients; tracheostomy tubes, connectors and fittings; controllers for medical respirators or ventilators; facial masks, oral masks, nasal masks, nasal cannula, headgear, all being for medical purposes; parts and fittings for all the aforementioned goods