| 摘要 |
An apparatus (10) for supplying a respiratory gas to a patient includes a respiratory gas generating device (12), a device (36) for introducing the respiratory gas into the cavitas nasi of the patient, a conduit (18) fluidly connected to the respiratory gas generating device (12) and the introducing device (36); a valve (32), provided in the conduit (18), for separating and connecting the introducing device (36) from and to the respiratory gas generating device (12) and an orifice (24,26) provided in the conduit (18) upstream of the valve means (16). The apparatus (10) for supplying the respiratory further includes a controller (22) for operating the valve (32) between intermittent and continuous mode. In the intermittent mode, the valve (32) connects the introducing device (36) to the respiratory gas generating device (12) at a predetermined interval to provide the respiratory gas in the form of a pulse, and in the continuous mode, the valve continuously connects the introducing device (36) to the respiratory gas generating device (12). The valve (32) is provided in the conduit adjacent to the introducing device (36) to allow the pressure pulse of the respiratory gas to reach the introducing device (36) a delay no greater than 20 msec. <IMAGE> |
