2-77
Figure 32 Structural diagram of the absorber canister and bypass assemblies
2.3.5.7 Volume Exchanger Assembly
The volume exchanger assembly is used to isolate the breathing gas from the drive gas, similar to
bellows. In the expiratory phase, the patient's exhaled gas enters the volume exchanger, which
has a volume of 1500 mL and therefore can contain the patient's exhaled gas. In the inspiratory
phase, the drive gas from the inspiratory valve pushes the patient's exhaled gas that enters the
volume exchanger in the expiratory phase into the sodalime absorber canister so that the gas is
returned to the patient.
Figure 33 Structural diagram of the volume exchanger assembly
Circuit adapter block assembly
Absorber canister assembly
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