A breathing mask arrangement for feeding a respiratory gas to a patient includes a forehead support device, an arch body, a sealing lip means for bearing against the surface of the patient's face, a respiratory gas conduit means for feeding respiratory gas to a mask internal space defined by the arch...http://www.google.es/patents/US7654263?utm_source=gb-gplus-sharePatente US7654263 - Breathing mask arrangement and a forehead support device for same
Breathing mask arrangement and a forehead support device for same
