An apparatus for humidifying a flow of breathable gas includes a water reservoir including a chamber structured to hold a volume of water, a water reservoir dock structured and arranged to receive the water reservoir in an operative position, and a latch movable between (1) a locked position to releasably lock the water reservoir to the water reservoir dock in the operative position, and (2) an unlocked position to allow insertion of the water reservoir into the water reservoir dock and removal of the water reservoir from the water reservoir dock.

The invention relates to a respiratory device (10) for the artificial respiration of a patient (12), comprising: —a respiration gas source assembly (15, 62), —a flow-changing device (16), —a humidifier device (38) which is designed to increase the value of the absolute humidity of the inspiratory respiration gas flow (AF), said humidifier device (38) having a liquid store (40) and an evaporation device (76) with a variable output for this purpose, —a respiration gas line assembly (30), —a proximal temperature sensor (48) which detects the temperature of the respiration gas flow (AF) in the proximal longitudinal end region (30a) of the respiration gas line assembly (30), —a humidity sensor assembly (66) which directly or indirectly detects the absolute humidity of the inspiratory respiration gas flow (AF), —a flow sensor (44), and —a controller (18) which is designed to control the operational output of the evaporation device (76)

An apparatus such as a fluid mixer, suitable for use with a respirator, including a venturi nozzle for flow of a pressure-controlled fluid; an ambient fluid aperture in fluid communication with the venturi nozzle; a fluid port; a pressure force multiplier in fluid communication with the fluid port; and a valve moveable relative to the venturi nozzle between a start flow position and a stop flow position; where the pressure force multiplier is configured such that fluid forced into the fluid port actuates the valve relative to the venturi nozzle; and where the pressure force multiplier is configured such that fluid withdrawn from the fluid port actuates the valve relative to the venturi nozzle. A method of using an apparatus suitable for a ventilator is also disclosed.

Various methods and systems are provided for determining a quality of a medical gas flow. In one example, a method for a medical gas quality monitoring system includes obtaining measurements of a medical gas via a plurality of sensors, the plurality of sensors including at least one of a humidity sensor, a particulate matter sensor, a carbon dioxide sensor, and a total volatile organic compound (tVOC) sensor, determining a gas quality index of the medical gas based on the obtained measurements, and outputting the determined gas quality index.

A device for use as part of a breathing assistance system for providing gases to a user. The device may include a fan, an enclosure for receiving a humidification chamber or both. A user interface of the device can indicate the operating mode of the device, whether a peripheral device is connected and whether a gases conduit is correctly connected to the outlet of the device. A controller in the device may hide or block options from the display of the user interface and may also initiate a power save mode when the device is powered by a battery.

This disclosure describes systems and methods for humidifying ventilator delivered breathing gases. These systems and methods utilize a hollow cone atomizer (e.g., a pressure swirl atomizer) and/or a heating element associated with a heating circuit and/or a heating tube. In some aspect, the systems and methods utilize received flow, temperature, and/or humidity information to determine an amount of water to add to breathing gases to reach a desired humidity of the breathing gases delivered to the patient. In further aspects, the humidification system can serve as a nebulization system for delivering nebulized medicine.

A method for canceling noises generated by a respiratory system that is configured to supply pressurized air to a user during a sleep session comprises generating sound data using a microphone; generating, using or one or more sensors, respiration data associated with respiration of the user of the respiratory system; analyzing the sound data to determine if noise associated with operation of the respiratory system is occurring; and causing a speaker to emit sound waves based at least in part on (i) the sound data, (ii) the respiration data, (iii) data related to the operation of the respiratory system, or (iv) any combination of (i), (ii), and (iii), the emitted sound waves being configured to acoustically cancel at least a portion of the noise associated with operation of the respiratory system.

A breathing mask including a vent system for ventilating the mask, a detector for providing respiration data of a user and located for sensing at least one physical property of air inside the breathing mask when worn by a user and a controller configured to activate the vent system based on the respiration data. The controller may be configured to predict future respiration data based on historic respiration data of at least one earlier detected inhaling or exhaling cycle, determine whether a future inhaling or exhaling cycle will occur based on predicted future respiration data and activate the vent system before the determined future inhaling or exhaling cycle commences.

Systems and method for conducting respiratory therapy in a respiratory system can adjust a flow of respiratory gases to a patient based upon a detected patient breath cycle. The respiratory system can include a non-sealed patient interface. The respiratory system can be configured to deliver a high flow therapy. A patient breath cycle may be determined using one or more measured parameters, such as a flow rate, a blower motor speed, and/or a system pressure. A flow source may be adjusted to have a phase matching that of the patient's breath cycle, such that flow in increased in response to the patient inhaling, and decreased in response to the patient exhaling.

A respiratory pressure therapy (RPT) system may include a housing portion forming a plenum chamber pressurizable to a therapeutic pressure; a seal-forming structure constructed and arranged to with a region of the patients face; a positioning and stabilising structure constructed and arranged to provide an elastic force to hold the seal-forming structure in a therapeutically effective position on the patients head; a blower configured to pressurize the plenum chamber to the therapeutic pressure; a vent assembly configured to discharge gas from a plenum chamber to atmosphere; a sensor port positioned downstream of the vent assembly such that the sensor port is in pneumatic communication with the air within the plenum chamber in any position of the vent assembly; and a sensor in pneumatic communication with the air within the plenum chamber via the sensor port.