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2.3.5.1 Patient Circuit Assembly
The patient circuit assembly consists of the inspiratory flow sensor (18.7), expiratory flow sensor
(18.13), inspiratory check valve (18.1), expiratory check valve (18.15), expiratory valve (18.22),
auto/manual valve (18.25), APL valve (18.26), bag arm, and leak detection plug. The patient
circuit assembly is assembled with the guiding post of the circuit adapter block through two
mounting holes, is connected to the gas interface on the adapter block to realize pneumatic
connection, and is stopped by the bypass assembly. A position switch is provided on the circuit
adapter block to detect whether the patient circuit is in place. The structural diagrams of the
patient circuit assembly and the circuit adapter block are shown below.
Figure 26 Structural diagram of the patient circuit assembly
Figure 27 Structural diagram of the circuit adapter block
Auto/manual valve (built-in)
Expiratory flow sensor (built-in)
Inspiratory flow sensor (built-in)
Expiratory valve (built-in)
Auto/manual drive valve assembly
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