Dräger Babylog 8000SC, Техническое и сервисное руководство, Страница: 34 / 155

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Dräger Medical AG & Co. KGaA 6173.3
Function description Babylog 8000
8.2 Controlled Ventilation
A continuous flow of gas is delivered to the Y-piece through the inspiratory line. The fraction of inspired O
2
is measured at the O
2
sensor S 3.1 through the open pneumatic valve Y 3.1. Safety valve Y 3.3 prevents
overpressure in the ventilation system, for example, if the expiratory line is blocked.
Fig. 9: Inspiratory Block
8.2.1 Inspiration
The PEEP control valve 4 triggers the expiratory valve Y 5.1 causing it to close the expiratory side. The
continuous flow of gas is delivered to the patient’s lung. The airway pressure is measured by the two
relative pressure sensors S 6.3 and S 6.4. The inspiratory pressure limit is controlled by expiratory valve
Y 5.1.
Fig. 10: Expiratory valve, PEEP/PIP valve, and pressures measurement
Insp.
3a
10 11a
R3.1
Y3.1
Y3.3
Y3.2
F3.1
D3.1
S3.1
6 Pressure
measurement
5 Expiratory valve
4 PEEP/PIP valve
Y5.1
Y4.1
R1.1
S6.3
S6.4
P
E
E
P