Vaporizers for medical purposes; anaesthetic masks; probes for medical purposes; blood oxygen monitors; medical device, namely, a device for measuring body position during sleep; medical device, namely, a device for measuring leg movements during sleep; medical devices for treating sleep disorders; medical apparatus for detecting rapid eye movement and other physiological conditions in a sleeping person indicative of dreaming and for inducing partial awakening so as to cause a state of lucid dreaming; medical instruments for measuring and displaying blood pressure; medical device accessories, namely, pre-packaged electrodes and pre-packaged electrical medical leads; disposable medical devices and supplies, namely, ECG connectors being medical electrodes and leads; electrocardiograph (ECG) lead wires for use between patient and equipment; blood pressure cuffs; medical apparatus and instruments for use in surgery; electrodes for medical use; arterial blood pressure measuring apparatus; respirators for artificial respiration; respiration monitors; medical ventilators; medical apparatus, namely, lung ventilators with monitoring capability; air filters for medical ventilators; apparatus for artificial respiration; blood pressure and diabetic diagnostic medical devices; medical diagnostic apparatus for detecting cancer; ultrasonic medical diagnostic apparatus; spirometers, being medical apparatus; defibrillators; manually-operated exercise equipment for physical therapy purposes for medical use; foam rollers for use in physical therapy; weight lifting machines for physical therapy for medical use