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2.2.4.3 Pneumatically-controlled Module of the Anesthetic Ventilator
The pneumatically-controlled module of the anesthetic ventilator provides drive gas for the
patient to breathe. O2 (or Air) from the gas supply inlet assembly enters the
pneumatically-controlled module and is outputted in three pathways: drive gas entering the
breathing system, drive gas discharged through the AGSS outlet and drive gas discharged
through the PEEP outlet. The ventilator controls drive gas flow to prevent too high pressure
inside the pneumatic circuit from injuring the patient. The following picture shows the gas
flow direction and parts concerning the pneumatically-controlled module.
Pneumatically-controll
ed module
Input tube of the
pneumatically-controlled module
Outputs drive gas
Gas exhaust tube
Outputs gas
discharged through
PEEP outlet
Two optional input ports
(select either of them)
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