| 摘要 |
A medical ventilator (1) is provided which continuously controls both inspiratory and expiratory flow and pressure, including positive end expiratory pressure (PEEP), through control of a single inspiratory flow-control valve (4). This valve controls inspiratory flow and pressure and, during expiration, controls expiratory flow and pressure by controlling the pressure within the back chamber (15) of an expiratory diaphragm (17) or balloon-type (127) valve. Feedback signals preferably are provided to the valve's controller to provide inspiratory closed-loop flow control and continuous inspiratory and expiratory closed-loop pressure control. <IMAGE> |
