A method includes applying, via a respiratory therapy system, initial therapy settings for a user during a first sleep session in which the user uses the respiratory therapy system. First physiological data, which is received from one or more sensors, is generated during the first sleep session. Modified therapy settings are applied, via the respiratory therapy system, during a second sleep session of the user. Second physiological data is received from the one or more sensors. The second physiological data is generated by the one or more sensors during the second sleep session. A set of sleep-related parameters is determined based on changes between the first physiological data and the second physiological data. One or more of a recommended therapy or recommended therapy settings is determined based on the set of sleep-related parameters.

Methods and apparatus provide automated circuit disconnection monitoring such as for a respiratory apparatus or system. Disconnection of a patient circuit, including a patient interface and air delivery circuit, may be detected and a message or alarm activated. In some versions, detecting occurrences of circuit disconnection event(s), such as by a processor, may be based on an instantaneous disconnection parameter as a function of a disconnection setting. The disconnection setting may be determined based on patient circuit type. The instantaneous disconnection parameter may be determined from detected pressure and flow rate, and may be, for example, a conductance value or an impedance value. Disconnection events may be qualified by one or more detected respiratory indicators. In some cases, instantaneous impedance or conductance may be used to assess re-connection of a patient circuit, detection of flow starvation, determine breath shape for triggering and cycling and to detect patient or circuit obstructions.

A mask system for delivery of respiratory therapy to a patient includes a nares portion and a mouth portion and an inlet conduit connected to at least one of the nares portion and the mouth portion to deliver the pressurized, breathable gas. The mask system is adapted to selectively utilize the nares portion and/or the mouth portion in a first mode utilizing both the nares portion and the mouth portion, and in a second mode utilizing the nares portion and not utilizing the mouth portion.

A patient interface includes a cushion configured to sealingly engage the patient's face, a support structure configured to support the cushion, the support structure being more rigid than the cushion, a plenum chamber formed at least in part by the cushion, and a connector configured to convey the pressurized respiratory gas to the plenum chamber. The connector includes a first portion formed from a first material and adapted to removably connect to the support structure. A plurality of vent holes are formed on the first portion. The connector also includes a continuous flexible portion that is formed from a second material, is more flexible than the first portion, and is configured to flex to permit engagement and disengagement of the first portion. The continuous flexible portion comprises a pair of opposing release buttons that are configured to be inwardly flexed to allow release of the connector from the support structure.

An oscillatory respiratory therapy device 100 has an opening 8 to atmosphere through which air passes to the user. The device has a visual indicator 20 including a paper indicator 25 and a dye reservoir 29 mounted at the opening. Before use, the opening 8 is covered by a removable cover strip 21 that prevents air flowing through the opening. The cover strip 21 is attached to the dye reservoir 29 so that the reservoir is pulled against the paper indicator 25 when the cover strip is removed, thereby the device to be used. This causes dye to flow gradually from the reservoir 29 and spread outwardly across the paper indicator 25, which is marked to indicate duration of use.

A respiratory device comprising a housing enclosing a chamber and an orientation indicator moveable with respect to the housing between a first position indicative of an orientation of the housing predetermined to be suitable for operation of the respiratory device, and a second position indicative of an orientation of the respiratory device predetermined to be less suitable for operation of the respiratory device. The orientation indicator is positioned in a location on the respiratory device visible to a user during the operation of the respiratory device.

A patient interface, including a mask assembly and a headgear assembly, provides improved facial sealing and improved ease of use. The mask assembly includes an inflating or ballooning seal. The seal can be secured between two portions of a snap-fit exoskeleton. The headgear assembly connects to the mask assembly with flexible straps during course fitting and with more rigid straps following course fitting. The straps include holes that fit over a tapering post on the mask assembly.

An infectious aerosol capture mask (IACM) includes a face tent coupled to a suction tube adapter. The face tent includes a proximal opening configured to be disposed over the mouth and nose of a patient. The face tent further includes a distal opening with a smaller diameter than the proximal opening. A coupler is configured to secure the suction tube adapter to the distal opening of the face tent. The suction tube adapter includes a suction port configured to be coupled to a suction tube for active capture of infectious aerosol and left unconnected for passive capture of infectious aerosol. A viral filter is disposed between the suction port and the face tent to capture infectious aerosols expelled by the patient. The IACM further includes one or more one-way valves that are configured to permit airflow into the face tent.

A method of ventilating a patient controls an actuator, in accordance with a prescribed value for a respiratory parameter, to compress an inflatable bag to cause air to flow out of an output valve of the bag. The respiratory parameter may include tidal volume, pressure, volume limit, peak pressure, I:E ratio, inspiratory time, and/or breathing rate of the air flowing through the output valve. The method also senses the pressure flowing through the output valve, and sends a pressure signal to the controller. Additionally, the method senses the flow rate through the output valve, and sends a flow rate signal to the controller. The method also adjusts the compression of the actuator as a function of the flow rate signal and/or the pressure signal to adjust the output tidal volume, pressure, volume limit, peak pressure, I:E ratio, inspiratory time, and/or breathing rate to be in accordance with the prescribed value.

A headgear assembly includes a strap of a first flexible material with an elongate edge, and a second flexible material folded around and running along the elongate edge. The second flexible material may be an elastic material. The second flexible material may also cover an intersection or joint in the first flexible material such that the first flexible material may be made from two flexible materials layered together or joined end to end.