Abstract: A cushion for a patient interface that delivers breathable gas to a patient includes a base wall structured to be connected to a frame, an underlying support cushion extending away from the base wall towards the patient's face in use, and a membrane provided to substantially cover at least a portion of the underlying cushion. The membrane is adapted to form a continuous seal on the patient's face. The underlying cushion has a spring-like connection with the base wall. The underlying cushion and/or base wall define a spring constant that varies along a length of the seal.

Abstract: 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.

Abstract: A cushion for a respiratory mask assembly includes a frame-connecting portion, a face-contacting portion, and a gusset portion disposed between and joining the frame-connecting and face-contacting portions. The gusset portion includes at least one perimetrical region which includes a laterally projecting exterior gusset section and a laterally projecting interior gusset section.

Abstract: A cushion for a patient interface that delivers breathable gas to a patient includes a base wall structured to be connected to a frame, an underlying support cushion extending away from the base wall towards the patient's face in use, and a membrane provided to substantially cover at least a portion of the underlying cushion. The membrane is adapted to form a continuous seal on the patient's face. The underlying cushion has a spring-like connection with the base wall. The underlying cushion and/or base wall define a spring constant that varies along a length of the seal.

Abstract: A respiratory mask assembly for treatment of sleep disordered breathing includes a frame, a cushion which at least in part defines a cavity adapted to receive at least a patient's nose, and an air delivery connection supported by the frame and adapted to connect an air delivery conduit to supply air to the cavity. The cushion includes a face contacting portion, a non-face contacting portion, and a gusset portion between the face contacting portion and the non-face contacting portion. The gusset portion includes a hanging portion that, when seen in cross-section, hangs over an adjacent exterior surface of the cushion. The gusset portion includes a first point adjacent to the face contacting portion and a second point adjacent to the non-face contacting portion, and the first point is offset radially outwardly from the second point.

Abstract: A patient interface for delivery of a supply of pressurised air or breathable gas to an entrance of a patient's airways including: a cushion member that includes a face contacting portion, a retaining structure and a resiliently flexible lip; and a frame member, wherein the retaining structure and the frame member are repeatedly engageable with and disengageable from one another, wherein a gas chamber is formed at least in part by engagement of the cushion member and the frame member, and wherein the resiliently flexible lip is configured to provide a sealing force between the cushion member and the frame member.

Abstract: A comfortable low-leak mask assembly for use with Non-Invasive Positive Pressure Ventilation (NIPPV) is provided to improve patient compliance and/or treatment. The mask system may include headgear having straps that are substantially inextensible and/or micro-adjustable; and/or a mask and/or cushion that includes various structures to allow enhanced/tailored sealing and/or fit at selected locations on the patient's face.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A full-face cushion for a patient interface that delivers breathable gas to a patient includes a frame connector adapted to engage the cushion with a mask frame. A clip is provided to maintain the cushion to the frame. The clip includes clip portions that connect to the frame with a snap-fit.

Abstract: A mask assembly for treating sleep disorder including: a first frame including a first wall that at least partially delimits a breathing chamber, a second wall surrounding an opening through the first wall and defining a first substantially cylindrical surface surrounding the opening, the second wall extending from the first wall, the opening allowing the flow of pressurized gas to the breathing chamber; a second frame including a third wall defining a second substantially cylindrical surface, a fourth wall, a member extending toward a forehead support and two headgear attachment locations, the third wall extending from the fourth wall, the second cylindrical surface at least partially overlapping with the first cylindrical surface, and the second frame being configured to removably interlock with the first frame proximate the opening; and a cushion molded to the first frame and adapted to seal around at least a patient's nose.

Abstract: 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.

Abstract: A face mask assembly (FMA) for supplying breathable gas to a wearer. The face mask assembly (FMA) includes a mask frame including a support, a facial cushion attached to the mask frame, and a forehead support. The forehead support includes a forehead cushion assembly and an adjustment knob operatively coupled to the forehead cushion assembly. The adjustment knob is threadably engaged with the forehead cushion assembly such that turning movement of the adjustment knob causes the mask frame to be moved between retracted and extended positions with respect to the forehead cushion assembly.

Abstract: A respiratory mask assembly for delivering breathable gas to a patient includes a frame to support one of at least first and second compliant patient interfaces and a forehead support adjustably mounted to the frame. The forehead support is structured and configured to be moved between a first position for use with the first patient interface and a second position relative to the frame for use with a second patient interface, whereby the forehead support maintains a horizontal offset distance with the first and second patient interfaces which is substantially constant.

Abstract: A nasal prong (230) for sealing with a nasal passage of a patient includes a head portion (235) structured to seal and/or sealingly communicate with the patient's nasal passage and a column or stalk structured to interconnect the head portion with a base. The head portion (235) is configured to direct gas in use away from the septum and/or posteriorly relative to the nasal passage.

Abstract: 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.

Abstract: A forehead support for a patient interface used in the treatment of sleep disordered breathing, includes a support post provided to a frame and a pair of arms extending from the support post. At least one of the pair of arms is adapted to rotate relative to the support post about an axis that extends transverse to the support post.

Abstract: A nasal prong for sealing with a nasal passage of a patient includes a head portion structured to seal and/or sealingly communicate with the patient's nasal passage and a column or stalk structured to interconnect the head portion with a base. The nasal prong is structured to redirect air flow direction, diffuse air flow or create turbulence, and/or orient a prong orifice in order to reduce and/or eliminate air jetting effects.

Abstract: 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.