A patient interface gas delivery mask having a forehead and chin support system including a forehead support, a chin support, and a system for supplying a flow of gas to a patient that incorporates such a mask, forehead support, and chin support. The forehead support includes a supporting arm which is...http://www.google.fr/patents/US7748384?utm_source=gb-gplus-shareBrevet US7748384 - Patient interface with forehead and chin support
