An apparatus is provided for delivering a fluid to an orifice of a patient. A delivery device, such as a mask or cannula with nostril tubes, has at least one electrode for contacting the patient's skin or other conductive surface. An alarm circuit produces an electrical alarm signal in response to an...http://www.google.fr/patents/US5320092?utm_source=gb-gplus-shareBrevet US5320092 - Fluid delivery apparatus with alarm
