Free Breathing Valve - GE Datex-Ohmeda Aisys Carestation Reference Manual

2.13.9 Free
breathing valve
M1046983 04/08
The free breathing valve (17) helps assure the patient can spontaneously breathe. The
ventilator is programmed to supply a specified number of breaths per minute to the
patient. If, in between one of these programmed cycles, the patient needs a breath
(spontaneous), the free breathing valve permits the patient to inhale. The free
breathing valve is closed on mechanical inspiration.
Figure 2-55 • Free breathing valve
Vent Engine
Free Breathing
Check Valve
Mechanical Overpressure
Valve (110 cm H2O)
17
Inspiratory Flow
Control Valve
2 Theory of Operation
Atmosphere
Popoff
Valve
Exhalatio
Drive Gas Check Valve
(2.0 cm
(3.5 cm H2O bias)
20
25 psig @
15 LPM
Gas Inlet
Valve
Co
if c
2-65