| 摘要 |
<p>An anaesthesia unit which operates according to the recirculatory system with circulation in a flow duct (1) while passing an absorber (3) of carbon dioxide. The duct has a connection (2) to the patient and when the patient exhales, breathing gas has to be brought to the inlet side (13) of the absorber and when the patient inhales, the gas must be carried away from the outlet side (15) of the absorber, whereas a corresponding direction of flow regarding the circulation of gas in the duct is ensured. In order to maintain this direction of flow, at least one ejector (18) with pumping action is connected to the duct. The ejector has an outlet opening (19), placed in a throttle (20), for gas from a gas pump (23), which pumps gas from a connection (25) to the duct (1) and back into the duct through the outlet opening (19).</p> |
