| 摘要 |
Anesthesia apparatus comprising a gas circuit (1, 2, 3) with an inhalation branch (1) and an exhalation branch (2) forming a loop circuit (3). A manual ventilation balloon (10) forms a first gas accumulation volume, and a mechanical ventilation enclosure (13) comprises a second gas accumulation volume (14). Switching means (20) make it possible to control communication of the manual ventilation balloon (10) or of the second accumulation volume (14) with the gas circuit (1, 2, 3) in order to change over from a mechanical ventilation mode to a manual ventilation mode, or vice versa. Actuating means govern control means for fresh gas in order to permit introduction of a predefined quantity of fresh gas, into the gas circuit (1, 2, 3), in response to determination of the end of an inhalation phase and after acting on the switching means (20) to change over from a mechanical ventilation mode to a manual ventilation mode, or vice versa. |
