A patient interface for delivery of a supply of pressurised air or breathable gas to an entrance of a patient's airways comprising: a cushion member that includes a retaining structure and a seal-forming structure permanently connected to the retaining structure; a frame member attachable to the retaining structure; and a positioning and stabilising structure attachable to the frame member.

A patient interface comprises a support structure and a seal-forming structure. The support structure is arranged to support the sealing portion and is configured to connect to the frame. The sealing portion comprises textile and is attached to the support structure along an outer perimeter of the sealing portion such that in use the sealing portion may be in tension due to reactive stress of the support structure and/or a resilient stretch characteristic of the textile such that the sealing portion exerts a force against the patient's face.

A patient interface comprises a support structure and a seal-forming structure. The support structure is arranged to support the sealing portion and is configured to connect to the frame. The sealing portion comprises textile and is attached to the support structure along an outer perimeter of the sealing portion such that in use the sealing portion may be in tension due to reactive stress of the support structure and/or a resilient stretch characteristic of the textile such that the sealing portion exerts a force against the patient's face.

A patient interface includes a frame including a textile material and a seal-forming structure provided to the frame. The seal-forming structure includes a foam material and/or a foam and textile material configured and arranged to form a seal with the patient's nose and/or mouth.

A patient interface includes a frame including a textile material and a seal-forming structure provided to the frame. The seal-forming structure includes a foam material and/or a foam and textile material configured and arranged to form a seal with the patient's nose and/or mouth.

A patient interface includes: a plenum chamber; a seal-forming structure; a positioning and stabilising structure; a plenum chamber insert configured to be positioned and retained within the plenum chamber; and a vent structure; wherein the plenum chamber insert has a plenum chamber insert port; wherein the plenum chamber insert has an exterior surface configured to be positioned adjacent to an interior surface of the plenum chamber; wherein when the plenum chamber insert is positioned and retained within the plenum chamber, a radial channel is formed by the interior surface of the plenum chamber and the exterior surface of the plenum chamber insert such that gas is able to pass between a patient-proximal side plenum chamber insert and a patient-distal side of the plenum chamber insert via the radial channel during use.

A patient interface includes: a plenum chamber; a seal-forming structure; a positioning and stabilising structure; a plenum chamber insert configured to be positioned and retained within the plenum chamber; and a vent structure; wherein the plenum chamber insert has a plenum chamber insert port; wherein the plenum chamber insert has an exterior surface configured to be positioned adjacent to an interior surface of the plenum chamber; wherein when the plenum chamber insert is positioned and retained within the plenum chamber, a radial channel is formed by the interior surface of the plenum chamber and the exterior surface of the plenum chamber insert such that gas is able to pass between a patient-proximal side plenum chamber insert and a patient-distal side of the plenum chamber insert via the radial channel during use.

The application describes a nasal sub-system (21) having: a hollow body (22) with an inner chamber (22a) and an inlet (22b) for receiving a respiratory gas, and a pair of nasal prongs (23, 24), in fluid communication with the inner chamber 22a of the hollow body 22, each nasal prong (23, 24) comprising a pair of inner channels (23b, 23c; 24b, 24c), each inner channels (23b, 23c; 24b, 24c) comprising a first channel (23b; 24b) and a second channel (23c; 24c) arranged in parallel, each first passage (23b; 24b) fluidly connecting the internal chamber (22a) of the hollow body (22) with a nostril (13, 14) of the patient (1), and each second passage (23c, 24c) fluidly connecting a nostril (13, 14) with a vent conduit (25) arranged in the hollow body (22) and in fluid communication with the atmosphere via at least one venting port (25a).

The application describes a nasal sub-system (21) having: a hollow body (22) with an inner chamber (22a) and an inlet (22b) for receiving a respiratory gas, and a pair of nasal prongs (23, 24), in fluid communication with the inner chamber 22a of the hollow body 22, each nasal prong (23, 24) comprising a pair of inner channels (23b, 23c; 24b, 24c), each inner channels (23b, 23c; 24b, 24c) comprising a first channel (23b; 24b) and a second channel (23c; 24c) arranged in parallel, each first passage (23b; 24b) fluidly connecting the internal chamber (22a) of the hollow body (22) with a nostril (13, 14) of the patient (1), and each second passage (23c, 24c) fluidly connecting a nostril (13, 14) with a vent conduit (25) arranged in the hollow body (22) and in fluid communication with the atmosphere via at least one venting port (25a).

A respiratory mask assembly for delivering breathable gas to a patient includes a frame and an elbow assembly. The frame has a front surface and a rear surface adapted in use to face the patient. The frame includes a main body providing an aperture therethrough for the introduction of breathable gas into a nasal breathing cavity. The elbow assembly is swivelably coupled to the front surface of the frame. The elbow assembly includes a swivel elbow that defines an intake port and an exhaust port separated from the intake port using a baffle. The elbow assembly includes an end portion that interfaces with the aperture of the frame.