Abstract: A patient interface comprising a plenum chamber, a seal-forming structure configured to form a seal with a region of the patient's face surrounding an entrance to the patient's airways, and a vent structure configured to allow a flow of gases exhaled by the patient from an interior of the plenum chamber to ambient. The plenum chamber comprises an anterior portion comprising an inlet configured to receive a flow of air at the therapeutic pressure for breathing by the patient. The vent structure is configured to vent the flow of gases from the interior of the plenum chamber in a substantially lateral direction in use. The patient interface further comprises a deflector configured to redirect the laterally vented flow of gases. The patient interface further comprises a diffuser to diffuse the vented flow of gases.

Abstract: This invention relates to a vent structure for a respiratory therapy system. In one form the vent structure comprises a vent housing. The vent housing may define a flow path for a flow of air being vented from the respiratory therapy system, a vent inlet configured to allow the flow of air to enter the flow path, and a vent outlet configured to allow the flow of air to exit the flow path into the surrounding ambient air. The vent housing may be configured so that the flow path comprises a curved turning region in which the flow path changes direction by at least 90°. The vent housing may comprise an inner path surface on an inner side of the flow path and an outer path surface on an outer side of the flow path. The width of the flow path at the turning region and at a region downstream of the turning region may be at least substantially 0.85 mm.

Abstract: A patient interface system for delivery of respiratory therapy to a patient comprises: a nasal portion including a nasal chamber and a nasal sealing portion adapted to form a seal with the patients including an opening; an inlet conduit connected to the nasal portion to deliver the pressurized, breathable gas to the nasal chamber; and a nasal chamber coupling component adapted to form part of a releasable fluid coupling to enable the nasal portion to be fluidly coupled to a mouth portion to communicate a portion of the pressurized, breathable gas through the nasal chamber opening to the mouth portion.

Abstract: A patient interface to deliver of a flow of air at a positive pressure with respect to ambient air pressure to an entrance to the patient's airways including at least the entrance of a patient's nares while the patient is sleeping, to ameliorate sleep disordered breathing, includes a seal-forming structure, a positioning and stabilising structure, and a connector assembly adapted to connect to an air circuit. The connector assembly includes a ring member configured to be removably and releasably secured in the patient interface and an elbow assembly configured to connect to the air circuit. The elbow assembly is repeatedly connectable to and disconnectable from the ring member. The elbow assembly includes an elbow member and a clip member that includes a separate and distinct structure from the elbow member, and the clip member is configured and arranged to connect to the elbow member.

Abstract: Aspects of the present technology comprise a positioning and stabilising structure to hold a seal-forming structure in a therapeutically effective position on a head of a patient. The seal-forming structure may be constructed and arranged to form a seal with a region of the patient's face surrounding an entrance to the patient's airways for sealed delivery of a flow of air at a therapeutic pressure of at least 4 cmH2O with respect to ambient air pressure throughout the patient's respiratory cycle in use. The positioning and stabilising structure may comprise at least one gas delivery tube to deliver the flow of air to the entrance of a patient's airways via the seal-forming structure. The positioning and stabilising structure may comprise an adjustment mechanism for adjustment of a length of the at least one gas delivery tube to enable the positioning and stabilising structure to fit different size heads.

Abstract: A patient interface to deliver of a flow of air at a positive pressure with respect to ambient air pressure to an entrance to the patient's airways including at least the entrance of a patient's nares while the patient is sleeping, to ameliorate sleep disordered breathing, includes a seal-forming structure, a positioning and stabilising structure, and a connector assembly adapted to connect to an air circuit. The connector assembly includes a ring member configured to be removably and releasably secured in the patient interface and an elbow assembly configured to connect to the air circuit. The elbow assembly is repeatedly connectable to and disconnectable from the ring member. The elbow assembly includes an elbow member and a clip member that includes a separate and distinct structure from the elbow member, and the clip member is configured and arranged to connect to the elbow member.

Abstract: Aspects of the present technology comprise a positioning and stabilising structure to hold a seal-forming structure in a therapeutically effective position on a head of a patient. The seal-forming structure may be constructed and arranged to form a seal with a region of the patient's face surrounding an entrance to the patient's airways for sealed delivery of a flow of air at a therapeutic pressure of at least 4 cmH2O with respect to ambient air pressure throughout the patient's respiratory cycle in use. The positioning and stabilising structure may comprise at least one gas delivery tube to deliver the flow of air to the entrance of a patient's airways via the seal-forming structure. The positioning and stabilising structure may comprise an adjustment mechanism for adjustment of a length of the at least one gas delivery tube to enable the positioning and stabilising structure to fit different size heads.

Abstract: Aspects of the present technology comprise a positioning and stabilising structure to hold a seal-forming structure in a therapeutically effective position on a head of a patient. The seal-forming structure may be constructed and arranged to form a seal with a region of the patient's face surrounding an entrance to the patient's airways for sealed delivery of a flow of air at a therapeutic pressure of at least 4 cmH2O with respect to ambient air pressure throughout the patient's respiratory cycle in use. The positioning and stabilising structure may comprise at least one gas delivery tube to deliver the flow of air to the entrance of a patient's airways via the seal-forming structure. The positioning and stabilising structure may comprise an adjustment mechanism for adjustment of a length of the at least one gas delivery tube to enable the positioning and stabilising structure to fit different size heads.

Abstract: Aspects of the present technology comprise a positioning and stabilising structure to hold a seal-forming structure in a therapeutically effective position on a head of a patient. The positioning and stabilising structure may comprise at least one gas delivery tube to deliver the flow of air to the entrance of a patient's airways via the seal-forming structure. The at least one gas delivery tube may be constructed and arranged to contact, in use, at least a region of the patient's head superior to an otobasion superior of the patient's head. The positioning and stabilising structure may comprise an adjustment mechanism for adjustment of a length of the at least one gas delivery tube to enable the positioning and stabilising structure to fit different size heads.

Abstract: A patient interface to deliver of a flow of air at a positive pressure with respect to ambient air pressure to an entrance to the patients airways including at least the entrance of a patients nares while the patient is sleeping, to ameliorate sleep disordered breathing, includes a seal-forming structure constructed and arranged to form a seal with a region of a patient's face surrounding the entrance to the patients airways, a positioning and stabilising structure to provide a force to hold the seal-forming structure in a therapeutically effective position on a patients head, and a connector assembly adapted to connect to an air circuit. The connector assembly includes a ring member configured to be removably and releasably secured in an aperture of an attachment region of the patient interface and an elbow assembly configured to connect to the air circuit. The elbow assembly is repeatedly connectable to and disconnectable from the ring member. The elbow assembly includes an elbow member and a clip member.

Abstract: Aspects of the present technology comprise a positioning and stabilising structure to hold a seal-forming structure in a therapeutically effective position on a head of a patient. The positioning and stabilising structure may comprise at least one gas delivery tube to deliver the flow of air to the entrance of a patient's airways via the seal-forming structure. The at least one gas delivery tube may be constructed and arranged to contact, in use, at least a region of the patient's head superior to an otobasion superior of the patient's head. The positioning and stabilising structure may comprise an adjustment mechanism for adjustment of a length of the at least one gas delivery tube to enable the positioning and stabilising structure to fit different size heads.