Abstract: A device for controlling the pressure of a gas in a circuit via the generation of bubbles through a liquid, which is used to produce a continuous positive airway pressure (CPAP), is provided. The device includes a container containing a liquid and a bubble tube with one end located outside the liquid connected to a device connected to a patient's respiratory tract and the other end located within the liquid. The device also includes at least one hose for adjusting the level of liquid in the container.

Abstract: The present invention relates to a device for controlling the pressure of a gas in a circuit by means of the generation of bubbles through a liquid, this effect being is used to produce a continuous positive airway pressure (CPAP). The invention comprises a container containing a liquid; a bubble tube with one end located outside the liquid connected to a device connected to a patient's respiratory tract and the other end located within the liquid; and means for adjusting the level of liquid in the container. The device may also comprise, in addition to the aforesaid, means to stabilize the liquid level inside the container, humidifying and heating means located inside the container, and a gas-recycling system that conveys all or a portion of the gases generated in the container towards the humidifying and heating device.