Mechanical Ventilation - GE Datex-Ohmeda Aisys Carestation Reference Manual

2.12.3 Mechanical ventilation

Mechanical inspiration
D
P
AP Airway Pressure
D
Drive gas
FG Fresh Gas
P Pilot pressure
V
Bag/Vent switch to Vent
1
Flow to absorber
2
Flow from absorber
3
Inspiratory flow
Figure 2-36 • Mechanical inspiration
M1046983 04/08
The Bag/Vent switch closes the manual path (V). Pilot pressure (P) closes the
exhalation valve.
Drive gas (D) pushes down on the bellows. Gas flows from the bellows (1), through the
absorber (2), and through a unidirectional valve (inspiratory check valve) to the patient
(3).
During inspiration, fresh gas flows into the inspiratory limb, upstream of the inspiratory
check valve.
D
1
V
2 Theory of Operation
AP
FG
2
3
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