A facial respiratory interface (1, 11) comprising an interface body (2, 12) which bears at least one thermistor (3) having an active end (4) which can be placed opposite the mouth of a user when the interface (1, 11) is put into position on the facial region of said user, wherein the length (L) separating...http://www.google.co.uk/patents/US20020124849?utm_source=gb-gplus-sharePatent US20020124849 - Nasal breathing mask with adjustable thermistor for treating respiratory disorders of sleep
