| 摘要 |
An anaesthetic machine (2) comprising a gas flow system (6, 8, 10) with a variable-volume gas container (6; 32, 34) for breathing gas, a fresh gas system (24, 26) for supplying the fresh gas system (6, 8, 10) with a flow of fresh gas and a control unit (28) are described. The control unit (28) is devised to control the variable-volume gas container (6; 32, 34) during a first phase of inspiration so a flow of breathing gas is released and mixes with a flow of fresh gas from the fresh gas system (24, 26). The control unit (28) is devised to start a second phase of inspiration if the flow of breathing gas from the variable-volume gas container (6; 32, 34) ceases before inspiration has been completed, the control unit (28) controlling the anaesthetic machine (2) during said second phase so inspiration is maintained with a flow of fresh gas from the fresh gas system (24, 28) in order to achieve a system in which all breathing modes can be accommodated and gas consumption is minimised. <IMAGE> |
