| 摘要 |
A respirator, particularly for infants, for supplying respiratory gas to a patient selectively according to an intermittent positive pressure ventilation cycle, an positive end expiratory pressure cycle, a continuous positive airway pressure cycle, and an intermittent mandatory ventilation cycle comprising, a respiration gas supply line connectable to a patient for supplying a respiratory gas to the patient, an expiration valve for switching from an inspiration phase to an expiration phase and back also connectable to the patient, and a first logic element connected to the expiration valve for switching the expiration valve from an inspiration phase to an expiration phase and back again. A pressure control system is connected to the first logic element for supplying gas at selected pressures to the expiration valve for the inspiration and expiration cycles thereof. A time control system is connected to the first logic element and the pressure control system which provides a selected time duration for an inspiration phase and an expiration phase. A source of static control pressure is derived from the respiration gas supply line and the pressure and time control systems both comprise a plurality of logic elements, each connectable to the static control pressure for controlling the inspiration and expiration phase switching, the selected pressures and the selected time durations. |
