Medical device to alleviate or prevent snoring; apparatus especially for assisting and/or maintaining effective patient/subject respiratory function; system especially for assisting and/or maintaining effective patient/subject respiratory function; device for assisting or supporting patient/subject ventilation; apparatus for assisting or supporting patient/subject ventilation; system for assisting or supporting patient/subject ventilation; device for supporting nasal and/or oral ventilation; apparatus for supporting nasal and/or oral ventilation; system for supporting nasal and/or oral ventilation; ventilation therapy device; ventilation therapy arrangement; device to alleviate or prevent snoring; ventilation therapy system; device for assisting breathing or respiration; apparatus for assisting breathing or respiration; system for assisting breathing or respiration; device for breathing purposes; apparatus for breathing purposes; system for breathing purposes; device for medical and therapeutic stimulation of the body; apparatus for medical and therapeutic stimulation of the body; system for medical and therapeutic stimulation of the body; system to alleviate or prevent snoring; device for alleviation of breathing difficulties; apparatus for alleviation of breathing difficulties; system for alleviation of breathing difficulties; bed accessory for therapeutic use; anti-snoring device; disposable clothing for medical use; therapy and/or treatment device; mattress accessory for therapeutic or medical use; therapeutic apparatus or device to minimize snoring and sleep apnea; therapeutic devices; sleep device that enables continuous positive airway for the treatment of sleep apnoea, sleep related and respiratory disorders; anti-snoring devices; therapeutic apparatus to minimize snoring and sleep apnoea; medical device for helping to alleviate or provide relief of sleep apnoea and generally improving air flow through nasal cavities; device for medical use/purposes; apparatus for medical use/purposes; system for medical use/purposes; device especially for assisting and/or maintaining effective respiratory function