Scientific instrumentation and electronic apparatus for medical and telemedical use, namely, [ electroencephalographic and radiology apparatus for medical purposes; patient monitoring, remote monitoring, analyzing and/or recording apparatus, namely, blood pressure measurers; thermometers for medical use; abdominal respiration sensors; pH detectors, air pressure and air flow sensors, and thoracic respiration sensors and body position sensors, all for medical use; ] apparatus for investigating, monitoring, analyzing, diagnosing and/or treating sleep, sleep related and respiratory disorders, respiratory function and respiration [, namely, portable monitoring apparatus, namely, respiratory and electrophysiological monitoring units; apparatus for investigating, monitoring, analyzing, diagnosing and/or recording electrophysical variables including variables relating to the nervous system, neurology, cardiology and physiology, namely, respiratory and electrophysiological monitoring units; apparatus for sleep staging, namely, sleep data capturing, processing and monitoring apparatus; interface adaptors and sensors for monitoring patient variables, namely, EEG (electroencephalogram), EOG (electroculogram), EMG (electromyogram), oxygen saturation, carbon dioxide, nasal air flow, patient movement, namely, leg movement, thoracic and abdominal respiratory movement, heart rate, body temperature including rectal temperature, blood pressure, pH level, oesophageal pressure, snoring noises, positive airway mask pressure, airway mask air flow, and airway titration, radiology imaging apparatus for medical purposes, namely, remote imaging and transmitting apparatus in the nature of radiological image data capturing, processing and monitoring apparatus; apparatus for providing ventilation support to patients for therapeutic, diagnostic and/or analytical purposes including apparatus for providing gas delivery to patients and apparatus for providing air including continuous positive air pressure delivery to patients, but excluding instruments and devices used for investigating, monitoring, measuring or analyzing enzymes, phosphatases, or systolic pulmonary artery pressure, and instruments and devices used to treat related medical conditions ]