APPARATUS FOR CONTROLLING THE PRESSURE OF GAS BY BUBBLING THROUGH A LIQUID, SUCH AS BUBBLE CPAP

摘要

Apparatus (200) for effecting bubble CPAP. The apparatus (200) includes a hollow vessel (202) holding a liquid (26), a cap (204), and a positionable tube assembly (206). The positionable tube assembly (206) comprises a guide tube (214) and a positionable tube (216). The positionable tube (216) is arranged to have a gas introduced though it and is located within the guide tube (214). The positionable tube (216) is arranged to be slid to various discrete longitudinal positions with respect to the guide tube (214) and to be held in any one of those discrete positions at slots (224) against accidental displacement so that the lower free end (230) of the positionable tube (216) is held at a desired position below the surface of the liquid (26).