Systems and methods producing a customised patient respiratory interface are disclosed. Data representative of one or more landmark features of a head of a human is obtained. One or more landmark feature locations of the landmark features are identified based on the data. A set of manufacturing specifications for production of the patient respiratory interface component is determined based on the one or more landmark feature locations. The patient respiratory interface component is produced based on the set of manufacturing specifications.

Systems and methods producing a customised patient respiratory interface are disclosed. Data representative of one or more landmark features of a head of a human is obtained. One or more landmark feature locations of the landmark features are identified based on the data. A set of manufacturing specifications for production of the patient respiratory interface component is determined based on the one or more landmark feature locations. The patient respiratory interface component is produced based on the set of manufacturing specifications.

A patient interface including a positioning and stabilizing structure that is configured to maintain a first seal-forming structure and a second seal-forming structure in a therapeutically effective position. The positioning and stabilizing structure comprises a frame coupled to the plenum chamber. The frame includes a central portion coupled to the plenum chamber outside of the cavity. The frame also includes a pair of arms that extend away from the central portion in a posterior direction past the second seal-forming structure. The pair of arms are more flexible than the central portion. The positioning and stabilizing structure also includes headgear straps coupled to the frame, which configured to provide a tensile force to the first seal-forming structure and to the second seal-forming structure into the patient's face via the frame.

A patient interface including a positioning and stabilizing structure that is configured to maintain a first seal-forming structure and a second seal-forming structure in a therapeutically effective position. The positioning and stabilizing structure comprises a frame coupled to the plenum chamber. The frame includes a central portion coupled to the plenum chamber outside of the cavity. The frame also includes a pair of arms that extend away from the central portion in a posterior direction past the second seal-forming structure. The pair of arms are more flexible than the central portion. The positioning and stabilizing structure also includes headgear straps coupled to the frame, which configured to provide a tensile force to the first seal-forming structure and to the second seal-forming structure into the patient's face via the frame.

A vent structure for a respiratory therapy system may comprise a vent housing and a membrane within the vent housing. The vent housing may define a first flow path between an air circuit and a plenum chamber of a patient interface, and a second flow path between the first flow path and surrounding ambient air. The first flow path passes through a central aperture of the membrane. A first side and opposite second side of the membrane may both be exposed to air flow in the first flow path in use. When air flows from the air circuit to the plenum chamber the membrane may adopt a first configuration in which air flow to the second flow path is partially blocked. When air flows from the plenum chamber to the air circuit the membrane may adopt a second configuration allowing air flow from the first to the second flow path.

A vent structure for a respiratory therapy system may comprise a vent housing and a membrane within the vent housing. The vent housing may define a first flow path between an air circuit and a plenum chamber of a patient interface, and a second flow path between the first flow path and surrounding ambient air. The first flow path passes through a central aperture of the membrane. A first side and opposite second side of the membrane may both be exposed to air flow in the first flow path in use. When air flows from the air circuit to the plenum chamber the membrane may adopt a first configuration in which air flow to the second flow path is partially blocked. When air flows from the plenum chamber to the air circuit the membrane may adopt a second configuration allowing air flow from the first to the second flow path.

A first source of medical gas has a generally cylindrical male outlet with a cylindrical bore and a threaded outer cylindrical surface. A flexible cylindrical elastomeric medical gas tubing has an input end with a bushing making a flush abutment with the male outlet at the output orifice. An output end attaches to any of a plurality of medical gas utilizing devices, but preferably with a dampening disperser held in position in the space in the vicinity of a patient's nose and mouth. An annular flange of the input end bushing resides within a central cylindrical bored out region extending through the first end and nearly to the second end of a rotatable connector forming an interior surface of a connector with threads coupling with the threads of the male outlet. The second end is an annular abutment against the annular flange holding the input end tubing bushing against the outlet source and providing an airtight coupling. A gripping means is on the exterior surface of the connector.

A seal-forming structure for a patient interface may include a patient-contacting surface configured to engage the patient's facial skin to form a seal; a posterior opening formed in the patient-contacting surface, the posterior opening configured to provide the flow of air at said therapeutic pressure to the patient's nares; and a support structure extending from the patient contacting surface to an interior surface of the seal-forming structure, the support structure and the interior surface forming a continuous loop, wherein the patient interface is configured to allow the patient to breath from ambient through their mouth in the absence of a flow of pressurised air through the plenum chamber inlet port, or the patient interface is configured to leave the patient's mouth uncovered.

Expiration system for a patient interface, comprising at least two walls, wherein the walls are arranged next to one another at least in certain sections. The expiration system has at least two flow paths for the flow of respiratory gas out of an interior of the patient interface, wherein the first flow path at least partially runs between the first wall and the second wall and the first flow path is configured for at least intermittently reducing respiratory gas pressure and wherein the second flow path is at least partially enclosed by the second wall and the second flow path is at least partially configured for the at least intermittent flow of respiratory gas into the interior of the patient interface.

Expiration system for a patient interface, comprising at least two walls, wherein the walls are arranged next to one another at least in certain sections. The expiration system has at least two flow paths for the flow of respiratory gas out of an interior of the patient interface, wherein the first flow path at least partially runs between the first wall and the second wall and the first flow path is configured for at least intermittently reducing respiratory gas pressure and wherein the second flow path is at least partially enclosed by the second wall and the second flow path is at least partially configured for the at least intermittent flow of respiratory gas into the interior of the patient interface.