Medical apparatus and instruments and medical devices for use in oxygen, nebulizer, and aerosol therapy; medical apparatus and instruments and medical devices for use in respiratory physiotherapy; respiratory and ventilatory apparatus and instruments; kits or sets of parts for assembly into medical apparatus and instruments and medical devices for use in oxygen, nebulizer, and aerosol therapy; kits or sets of parts for assembly into medical apparatus and instruments and medical devices for use in respiratory physiotherapy; kits or sets of parts for assembly into respiratory and ventilatory apparatus and instruments; closed suction devices for medical use; breathing and ventilating apparatus for medical use; intubation apparatus; tracheal tubes; endotracheal tubes; flow generators (medical devices); valves for use with breathing apparatus; venturi valves for medical use; medical airway devices; nebulizers; tubes and hoses for medical use; medical devices for placing and securing medical tubes; T-pieces for medical use; cannulae; filters for medical therapy and treatment purposes; catheter mounts; heat and moisture exchangers for medical purposes; masks for medical therapy and treatment purposes; respiratory hoods for medical use; oxygen therapy masks; medical venturi masks; nasal masks for medical therapy and treatment purposes; gas inlets for masks for medical therapy and treatment purposes, respiratory hoods for medical use, oxygen therapy masks, venturi masks and nasal masks for medical therapy and treatment purposes; filters for masks for medical therapy and treatment purposes, respiratory hoods for medical use, oxygen therapy masks, venturi masks and nasal masks for medical therapy and treatment purposes; medical apparatus and devices for the treatment of respiratory conditions; respiratory therapy apparatus and devices; BiPAP and CPAP devices being breathing and ventilating devices for medical purposes; respiratory exercisers for medical use; atomisation devices for medical use; syringes; reservoir bags for medical and surgical use; oxygen and gas recovery apparatus for medical use; humidifying apparatus for medical use; de-humidifying apparatus for medical use; mouthpieces being a component of surgical and medical apparatus and instruments; patient monitors; respiration monitors; patient monitoring systems comprising medical apparatus with computer hardware and software for use in monitoring, measuring, displaying and storing patient data; parts, fittings, accessories and connectors for all the aforesaid goods.