Catheters and parts and fittings therefor; Medical apparatus for diagnosing or treating respiratory conditions; Medical apparatus, namely, electric vaporizer for upper respiratory conditions; Medical apparatus, namely, lung ventilators with monitoring capability; Medical apparatus, namely, respiratory equipment and monitors therefor; Medical apparatus, namely, therapeutic devices for delivering specifically engineered pressure and gas mixtures for medical benefit; Medical instruments for measuring and displaying lung capacity; Medical ventilators; Nebulisers for medical purposes; Portable medical devices used for breathing exercises, namely, portable devices used for endogenous breathing exercises and for respiratory muscle training