Abstract: Disclosed is a novel improved nasal mask useful for patients suffering from respiratory ailments such as sleep apnea syndrome. The mask includes a shell having a contoured portion circumscribing the nasal area and side wings through which a retention strap passes. A seal is disposed between the shell and the patient's face providing a large contact area to distribute retention forces and reduce facial pressure. Transmission of external loads to and torques induced in the shell are minimized by orienting inlets proximate side wings and supporting a supply conduit along the strap.

Abstract: The present invention comprises a method and apparatus for the treatment of sleep apnea through the application of real-time, interactive positive airway pressure within the airway of a patient attached to the system. A single sensor is arranged in fluid communication with the airway of the air delivery conduit, and is designed to detect abnormal inspiratory flow to the patient's airway on a single breath basis. Output air pressure from the air source to the airway of the patient is continuously increased, instantaneously stopped, and slowly decreased in response to real-time changes in the patient's inspiratory flow curve detected and interpreted by this apparatus, thus providing the optimal pressure required to restore airway patency on each breath.