| 摘要 |
A ventilator includes a gas flow generator for generating a gas with an adjustable pressure and/or flow rate, an inspiratory line with a proximal end, connected to the gas flow generator and a distal end, devised for connection to a patient, an expiratory valve connected to the inspiratory line at a specific distance from the distal end of the inspiratory line to evacuate gas exhaled by the patient, a pressure gauge and/or a flow meter arranged to measure pressure and/or the rate of gas flow in the inspiratory line and a control unit for controlling at least the maintenance of a positive end-expiratory pressure (PEEP). For PEEP to be maintained in a simple and reliable manner, the ventilator is devised with the pressure gauge and/or the flow meter connected to the inspiratory line between the expiratory valve and the distal end of the inspiratory line, and the control unit is devised to open the expiratory valve and regulate, on the basis of the pressure and/or flow measured, a flow of gas through the inspiratory line during expiration so that the desired positive end-expiratory pressure is maintained. |
