Patent ID: 8312881

Claim:
A cushion having: a base; and a pair of nozzles, each nozzle including a head portion in the form of a truncated hollow cone having a relatively narrow tip portion to enter into the nasal passage of the patient's nose and a relatively wider portion to sealingly engage with an area about the rim of the nostril opening; and a flexible hollow stalk extending between the base and each said head portion to define a fluid path for delivery of pressurized gas from the base to the head portions, said hollow stalk defining a longitudinal axis that is parallel to the fluid delivery path, each said hollow stalk having a first end provided to the base, a second end provided to support the truncated hollow cone, and only a single substantially concave wall, as seen in cross section taken perpendicular to the longitudinal axis, extending from the first end to the second end, each second end having a reduced cross section with respect to a base portion of the respective truncated hollow cone, said reduced cross section being taken perpendicular to the longitudinal axis.