A method includes receiving first data associated with a first sleep session of a user. The method also includes determining a first set of sleep-related parameters associated with the first sleep session of the user based at least in part on the first data. The method also includes receiving second data associated with a second sleep session of the user. The method also includes determining a second set of sleep-related parameters associated with the second sleep session of the user based at least in part on the second data. The method also includes receiving third data associated with a variable condition. The method also includes causing one or more indications associated with the variable condition and the first sleep session, the second sleep session, or both to be communicated to the user.

A mechanical insufflation-exsufflation device including an air source to provide positive airway pressure (PAP); a patient interface; at least one sensor to sense air pressure and flow at the patient interface; and a controller to control the air source to deliver at least one mechanically assisted cough to the patient in response to at least one of a target breathing flow and a target inhalation time period being sensed by the at least one sensor, and when the at least one of a target breathing flow and a target inhalation time period is not sensed, the controller is configured to control the air source to deliver each in a series of high-level PAP provided over a duration being followed by a low-level PAP provided over a duration, the series of high-level PAP increasing in pressure level and duration from a prior one in the series of high-level PAP.

The gases temperature supplied to a patient when the patient is undergoing treatment such as oxygen therapy or positive pressure treatment for conditions such as Obstructive Sleep Apnea (OSA) or Chronic Obstructive Pulmonary Disease (COPD) is often measured for safety and to enable controlling of the humidity delivered to the patient. The invention disclosed is related to measurement of properties, particularly temperature (thermistor), of gases flowing through a heated tube, supplying gases to a patient, which utilises the heating wire within the tube.

A device (102) provides respiratory treatment for SDB (including mild OSA) and other respiratory conditions. A flow generator warms and humidifies gas at controlled flow levels. For example, the device (102) delivers breathable gas to the upper airway at flow rates of about 10-35 Liters/minute. Levels of flow rate, temperature and/or humidification of the device may be automatically adjusted in response to the detection of SDB events. The device may also automatically deliver adjustments of any of the levels in accordance with detected phases of respiratory cycles. In some embodiments, the device automatically delivers distinct levels to either of the nares based on independent control of flow to each nare. A warm-up procedure controls temperature and humidity at a desired target during a ramp-up of flow to the set therapy level. A cool-down procedure controls temperature above the dewpoint to avoid condensation internal to the device and patient interface.

A gases humidification system includes a measuring chamber and a mixing chamber. The mixing chamber has one or more mixing elements that improve a mixing of gases before reaching the measuring chamber. Ultrasonic sensing is used to measure gases properties or characteristics within the measuring chamber. A baffle or a vane may be used to control and direct the gases flow through the mixing chamber as the gases flow moves into the measuring chamber.

A method of estimating respiratory demand of a patient being administered flow therapy can include: administering a gas flow rate to the patient through both nostrils using a flow therapy apparatus with a patient interface for each nostril, measuring a parameter associated with that nostril, the parameter being one or more of: respiratory demand of that nostril, indicative of respiratory demand of that nostril, or a parameter from which respiratory demand of that nostril can be derived, determining respiratory demand (or parameter indicative of respiratory demand) for the patient from the nostril parameter for each nostril.

An apparatus for humidifying a flow of pressurised, breathable air includes varying a first pressure of the flow of breathable gas to vary a level of thermal engagement between the conductive portion of the reservoir and the heater plate, varying a height of the variable portion varies a level of thermal engagement between the conductive portion of the reservoir and the heater plate, use of a humidifier reservoir base component with a maximum water capacity substantially equal to the predetermined maximum volume of water of the humidifier reservoir or the use of intersecting inlet and outlet axes.

An apparatus for treating a respiratory disorder in a patient, includes a respiratory pressure therapy device that generates a flow of air at positive pressure for treating the respiratory disorder. An air circuit transports the flow of air generated by the respiratory pressure therapy device to a patient interface. A nebuliser module is located at or adjacent to a proximal end of the air circuit to nebulise a liquid to form a nebula of the liquid. The nebula is admitted into the flow of air generated by the respiratory pressure therapy device. A vaporiser is located at the distal end of the air circuit to receive and vaporise the nebula to form a humidified flow of air.

An apparatus for humidification of air to be delivered to a patient's airways may include a reservoir, and a humidifier chamber. The humidifier chamber may include a humidifier wick and a heating element for heating the humidifier chamber. The humidifier wick may comprise a fibrous sheet material. The humidifier chamber and wick may be vertically oriented in use such that a first end of the wick is above the second end of the wick. A deioniser may be provided to deionise the liquid prior to the humidifier wick. The apparatus may pasteurise liquid to be delivered to the humidification wick.

An add-on device and method for an Endo-Tracheal Tube (ETT), the add-on device including a lengthy body having a major arc-shaped cross section sized and shaped to tightly fit over an ETT, at least one longitudinal cavity passing along the lengthy body, including a distal suction cavity ending with a suction inlet at a distal end of the lengthy body; and a distal suction outlet channel extending from a proximal end of the lengthy body, the channel is a continuous extension of the distal suction cavity and configured to provide suction to the distal suction cavity. The add-on device senses moisture at a distal end of the add-on device, and in case of detection of excessive wetness, provides suction to the distal end of the device through a cavity passing along the device, the suction is provided via a suction outlet channel extending from a proximal end of the device.