| 摘要 |
Disclosed is a pressure regulating breathing assistance apparatus (100) which can produce pressure oscillations having high amplitudes, a low broad-band frequency spectrum and long time duration for use in CPAP for infants. The apparatus includes a pressurized gas source (110); a container of fluid (160) and a conduit (140). The conduit has proximal (141) and distal ends (145). The proximal end is adapted for connection to the pressurized gas source. The distal end has at least one peak inspiratory pressure control conduit configured to be submerged in the body of fluid at varying depths and at least one positive end-expiratory pressure control conduit configured to be submerged in the body of fluid at varying depths and a valve (125) intermediate the at least one peak inspiratory pressure control conduit and the at least one positive end-expiratory pressure control conduit. The conduit is also adapted for connection to a patient interface (130) intermediate the proximal and distal ends. The device can control the oscillatory amplitude, frequency range and composition, time duration, and mean airway pressure levels by adjusting certain device parameters, such as the angle and depth of the device in the fluid. A device and mechanical system for remotely adjusting and measuring the angle of the device in a fluid are also disclosed. Furthermore, a device and system are disclosed that can deliver pressure oscillations having high amplitudes, a low broad-band frequency spectrum, long time duration, and multiple mean airway inspiratory and expiratory pressure levels. The device and system also provide means for controlling respiration timing in a patient, including: breaths per minute, inspiratory time, and the ratio of inspiratory to expiratory time. |
