A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.

A patient interface for delivering breathable gas to a patient includes a sealing portion including a nose tip engagement portion adapted to form a seal with the patient's nose tip, an upper lip engagement portion adapted to form a seal with the patient's upper lip and/or base of the patient's nares, and nostril engagement flaps adapted to form a seal with the patient's nares. The nose tip engagement portion, the upper lip engagement portion, and the nostril engagement flaps are all structured to extend or curve outwardly from a supporting wall defining an air path.

A patient interface for delivering breathable gas to a patient includes a sealing portion including a nose tip engagement portion adapted to form a seal with the patient's nose tip, an upper lip engagement portion adapted to form a seal with the patient's upper lip and/or base of the patient's nares, and nostril engagement flaps adapted to form a seal with the patient's nares. The nose tip engagement portion, the upper lip engagement portion, and the nostril engagement flaps are all structured to extend or curve outwardly from a supporting wall defining an air path.

A patient interface to deliver a flow of air at a positive pressure to ameliorate sleep disordered breathing includes a seal-forming structure forming at least a portion of a plenum chamber pressurizable to a therapeutic pressure and a vent and AAV arrangement. The vent and AAV arrangement is configured to regulate flow therethrough to (1) provide a vent flow path when pressure in the plenum chamber is above a predetermined magnitude and (2) provide a breathable flow path when pressure in the plenum chamber is below the predetermined magnitude or not delivered. The vent and AAV arrangement includes an AAV member including a flap portion structured and arranged to regulate flow through a port. The flap portion includes a plurality of vent holes therethrough.

A mask for delivering breathable gas to a patient at positive pressure to treat sleep disordered breathing, may comprise: a rigid mask frame having a bore and an interfacing structure, the interfacing structure being located on the rigid mask frame and along a peripheral edge of the bore, said mask frame having no built-in or integral headgear attachment points; a sealing cushion provided to the rigid mask frame and adapted to form a seal with the patient's face, the rigid mask frame and the sealing cushion together forming, at least partly, a breathing cavity; and a headgear connector adapted to engage the interfacing structure with a snap-fit, said headgear connector including a pair of lower headgear clip anchors adapted to be engaged with respective ones of a pair of lower headgear clips to attach a pair of lower side straps, said headgear connector including a fixed forehead support.

The invention provides a respiratory mask comprising a mask body including a base and walls upstanding from the base and converging towards an apical region and a forehead engagement member extending from the apical region of the mask body. The forehead engagement member coupled to the mask body so as to be movable relative to the mask body in a sagittal plane when the mask body is worn by a patient. An adjustment mechanism is provided for adjusting the relative positions of the forehead engagement member and the mask body. In another aspect, the invention also provides a respiratory mask including a mask body including a base and walls upstanding from the base and converging towards an apical region. The body includes a pair of transversely opposite headgear anchors adapted for attachment to headgear that a patient wears during use to secure the mask to the face of a patient.

A nasal assembly for delivering breathable gas to a patient includes a frame having an integrally formed first connector portion. A nozzle assembly includes a gusset or base portion and a pair of nozzles. At least one inlet conduit is structured to deliver breathable gas into the frame and nozzle assembly for breathing by the patient. A pair of second connector portions are removably and rotatably connected to respective first connector portions of the frame and are in communication with respective inlet conduits, e.g., directly or via angle connectors. A headgear assembly is removably connected to the pair of second connector portions and/or the angle connectors so as to maintain the frame and the nozzle assembly in a desired adjusted position on the patient's face.

A respiratory mask assembly for delivering breathable gas to a patient includes a frame and a cushion. The cushion has a non-face contacting portion structured to be connected to the frame, a face-contacting portion structured to engage the patient's face, and a central portion that interconnects the non-face contacting portion and the face contacting portion. The frame may be structured to allow a forehead support to assume multiple positions, to compensate for replacement cushions that may have a different profile, shape or size. The cushion is structured to compensate for variations in strap tension, treatment pressure and/or movement of the patient. Headgear may be provided with a strap assembly in which one or more straps is provided with selectively adjustable elasticity or extensibility that may be automatically changed in dependence of treatment pressure and/or treatment type.

A mask for delivering breathable gas to a patient at positive pressure to treat sleep disordered breathing, may comprise: a rigid mask frame having a bore and an interfacing structure, the interfacing structure being located on the rigid mask frame and along a peripheral edge of the bore, said mask frame having no built-in or integral headgear attachment points; a sealing cushion provided to the rigid mask frame and adapted to form a seal with the patient's face, the rigid mask frame and the sealing cushion together forming, at least partly, a breathing cavity; and a headgear connector adapted to engage the interfacing structure with a snap-fit, said headgear connector including a pair of lower headgear clip anchors adapted to be engaged with respective ones of a pair of lower headgear clips to attach a pair of lower side straps, said headgear connector including a fixed forehead support.

A patient interface for delivering breathable gas to a patient includes a sealing portion including a nose tip engagement portion adapted to form a seal with the patient's nose tip, an upper lip engagement portion adapted to form a seal with the patient's upper lip and/or base of the patient's nares, and nostril engagement flaps adapted to form a seal with the patient's nares. The nose tip engagement portion, the upper lip engagement portion, and the nostril engagement flaps are all structured to extend or curve outwardly from a supporting wall defining an air path.