Abstract: A tube 174 for delivery of gases to a patient interface and for treatment of expiratory gases. The tube has an inspiratory conduit 170 for directing a flow of gas toward a patient interface, an expiratory conduit 173 for directing a flow of gas from the patient interface 100 and a filter 140 in fluid communication with, or part of, the expiratory conduit 140. The filter 140 is configured to filter the flow of expiratory gases from the patent interface 100 before passage of the flow of expiratory gases from the patient interface into ambient air.

Abstract: A patient interface, such as a nasal cannula is described. The patient interface has a body portion to be located, in-use upon a face of a user. The body portion has at least one side arm that extends laterally from a central bridge portion to be located about a user's septum region, where each side arm is connected to a resilient, or relatively more rigid, bridge portion element. The interface has at least one, and preferably a pair of, nasal prong(s). The body portion has at least one fluid passageway connected to the nasal prong(s) for supply of a gas to the nare(s) of the user's nose. A cross section of the passageway varies along the length of the body portion to regions of varying flexibility along the body portion. The bridge portion element defines a substantially predetermined spatial relationship for outlet(s) of a gas delivery system supplying gas via each side arm to the outlet(s) from which, for example, the nasal prong(s) may be provided in fluid connection.

Abstract: A patient interface for respiratory therapy includes an interface body and a housing for receiving the interface body. The patient interface also includes a securement member having a pair of support pads, each of the support pads configured to engage the face of a user. In some configurations, the interface body can be a cannula body or a mask body. In some configurations, the housing can receive different interface bodies, and the interface bodies are interchangeable.

Abstract: A patient interface for respiratory therapy includes a nasal interface having nasal prongs configured to contact nares of the user and form a seal. The patient interface also includes a securement portion having a pair of facial pads, each of the facial pads configured to engage the face of a user on opposing sides of the nasal interface. The facial pads are coupled to the bridging portions configured to urge the nasal interface toward the user's face to create or maintain sealing engagement between the nasal interface and the user's face. In some configurations, the securement portion and the nasal interface are detachably coupled to each other.

Abstract: A patient interface, such as a nasal cannula is described. The patient interface has a body portion to be located, in-use upon a face of a user. The body portion has at least one side arm that extends laterally from a central bridge portion to be located about a user's septum region, where each side arm is connected to a resilient, or relatively more rigid, bridge portion element. The interface has at least one, and preferably a pair of, nasal prong(s). The body portion has at least one fluid passageway connected to the nasal prong(s) for supply of a gas to the nare(s) of the user's nose. A cross section of the passageway varies along the length of the body portion to regions of varying flexibility along the body portion. The bridge portion element defines a substantially predetermined spatial relationship for outlet(s) of a gas delivery system supplying gas via each side arm to the outlet(s) from which, for example, the nasal prong(s) may be provided in fluid connection.

Abstract: A patient interface assembly has a patient interface and a securement system for the patient interface and/or patient interface tubing. The patient interface has a body and at least one nasal prong extending from the body. The at least one nasal prong has a gas inlet for fluid communication with a supply of breathable gas, and a gas outlet configured to direct a flow of gas towards a nare of the user's nose. The at least one nasal prong further includes an exterior surface, at least a portion of the exterior surface is a sealing surface configured to seal the nare of the user's nose. The securement system has a two-part releasable attachment or connection arrangement, the arrangement comprising a first patch and a second patch.

Abstract: A patient interface, such as a nasal cannula is described. The patient interface has a body portion to be located, in-use upon a face of a user. The body portion has at least one side arm that extends laterally from a central bridge portion to be located about a user's septum region, where each side arm is connected to a resilient, or relatively more rigid, bridge portion element. The interface has at least one, and preferably a pair of, nasal prong(s). The body portion has at least one fluid passageway connected to the nasal prong(s) for supply of a gas to the nare(s) of the user's nose. A cross section of the passageway varies along the length of the body portion to regions of varying flexibility along the body portion. The bridge portion element defines a substantially predetermined spatial relationship for outlet(s) of a gas delivery system supplying gas via each side arm to the outlet(s) from which, for example, the nasal prong(s) may be provided in fluid connection.