| 摘要 |
An anaesthetic delivery system comprises a ventilation means (1) having an inspiration gas pathway (13,3,7) for conducting inspiration gas to a patient (4) and an expiration gas pathway (8,3,12) for conducting expiration gas away from the patient (4); and a filter element (5) serially connected to both the inspiration and the expiration gas pathways being adapted to retain an anaesthetic from expiration gas passing there through and to release retained anaesthetic into inspiration gas passing there through characterised in that there is further provided a supply of flushing gas (1,21) communicable with the filter element (5) to flush the retained anaesthetic from the system without passing to the patient (4). <IMAGE> |
