A nasal cannula for use in a system for providing a flow of respiratory gases to a user is described. The nasal cannula comprises a body made from a pliable material. The body has an inlet and at least one nasal prong fluidly connected to the inlet. In use a conduit providing a flow of gases to the cannula is connected to the inlet, and the nasal prong is inserted into a user's nostril. The cannula is arranged to direct the flow of gases from the nasal prong towards the front wall of the user's nasal passage within the user's nose.

Condensation or rain-out is a problem in medical circuits and previous attempts to manage and/or prevent rain-out have resulted in relatively expensive and/or difficult to manufacture medical circuit components. The subject patent provides an improved medical circuit component for managing rain-out. In particular the component may be an improved breathing tube, or insufflation system limb comprising a helically corrugated tube preferably incorporating a heater wire.

A reservoir configured to retain a volume of liquid for use in an apparatus for humidifying a flow of pressurised air comprises a base portion and a lid portion. The reservoir may be configured to improve its level of thermal contact to the heater plate using the flow of pressurised air. The reservoir may be configured to improve thermal contact between the reservoir and the heater plate by pre-compression upon engagement of the reservoir with the humidifier. The reservoir may comprise a removable intermediate portion, which may include the inlet tube and/or the outlet tube, for improved access for cleaning. The reservoir may also be configured to prevent overfilling. Overfill prevention features in the reservoir may include defined flow egress paths and/or formation of air locks.

A respiratory humidification system for providing humidification to gases that pass through a gas passage way before being provided to an airway of a patient is disclosed. The respiratory humidification system may include a liquid flow controller providing a controlled flow of liquid, a heating system including a heating surface configured to be located in a gases passage way and provide humidification to gases passing through the passage way, wherein the heating system receives the controlled flow of liquid, and one or more hardware processors providing deterministic control of a humidity level of gases passing through the gas passage way by instructing the liquid flow controller to adjust the controlled flow of liquid received at the heating system.

Apparatus for providing air at positive pressure for respiratory therapy to a patient includes a pneumatic block including at least first and second blower sub-assemblies and a common chassis assembly configured to support each of the at least first and second blower sub-assemblies. The at least first and second blower sub-assemblies are different structurally from one another in at least one aspect. Each of the at least first and second blower sub-assemblies includes a corresponding blower configured to produce a flow of air at a therapeutic pressure. The common chassis assembly and the first blower sub-assembly form a first configuration of the pneumatic block, and the common chassis assembly and the second blower sub-assembly form a second configuration of the pneumatic block. The air flow path and the chamber arrangement of the first configuration is different than the air flow path and the chamber arrangement of the second configuration.

A parameter translation system configured to determine respiratory therapy control parameters is provided. When a subject is prescribed respiratory therapy, his or her regimen will likely include receiving therapy from several different respiratory therapy devices. Respiratory therapy devices are often designed and/or approved for a niche depending on acuity of respiratory distress and/or insufficiency in the subject, the physical location of the subject, and/or other factors. These respiratory devices are made by a variety of manufacturers and deliver therapy with a variety of therapy regimes, settings, alarm parameters, and/or other control parameters. It is a laborious process to transfer such control parameters between two or more respiratory therapy devices. The present system facilitates translating these control parameters from one respiratory therapy device to another respiratory therapy device so the subject continues receiving the prescribed respiratory therapy when he or she switches from one device to another.

An expiratory limb is provided that is configured to remove humidified gases from a patient and configured to provide improved drying performance by providing a tailored temperature profile along the limb. Limbs for providing humidified gases to and/or removing humidified gases from a patient are also provided, the limbs having improved gas residence time at constant volumetric flow rate. The improved residence time can be achieved by providing a limb comprising multiple lumens.

A respiratory flow therapy apparatus including a sensing chamber which measures a flow of gases provided to a patient. The sensing chamber can be located after a blower and/or mixer. The sensing chamber can include an ultrasonic transducer, a temperature sensor, a heated temperature sensing element, and/or a gas concentration sensor. A flow path of gases used in conjunction with the sensor system prevents unwanted vorticity in the flow of gases that can create anomalies in measuring flow.

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 shock and vibration system for an infant care transport system with an enclosed infant care device. The shock and vibration system utilizes multiple damping systems that create a floating patient support system that allows the infant care device to move in the various axes of motion instead of being rigidly mounted to the frame or sub-frame, or any substructure.