
Fabius
®
Function Description
2-30
Cop
yr
ight
2000 Dr
aeger
M
edical,
In
c.
sec2_
funcde
scr
ip_
b.fm
Intermittent Positive Pressure Ventilation (IPPV): Inspiration
During inspiration, the inspiratory valve
1
remains open. The PEEP valve closes the
expiratory valve
2
. A control pressure, which varies with the pressure limit (Pmax) set
on the control box, is applied to the PEEP valve.
The gas mixture (expiratory and fresh gas) from the ventilator
3
flows through the
hose
4
, the inspiratory valve
1
, the inspiratory hose
5
, and through the Y-piece
6
into
the lung
7
. The ventilation pressure cannot exceed the pressure limit (Pmax) set on
the control box. The fresh gas flows through the absorbers and fills the breathing bag.
Any excess amount of fresh gas flows through the APL valve
8
and the non-return
valve
9
into the anesthetic gas scavenging system
10
.
Fig. 24:
Intermittent positive pressure ventilation (inspiration)
If the inspiratory pressure exceeds the set pressure limit (Pmax), the PEEP valve
opens. Any excess gas flows through the PEEP valve, and the flow sensor into the
circle absorption system.
4
6
2
1
5
7
8
9
3
10
ventilator
PEEP valve
fresh gas
Summary of Contents for Fabius 4116029
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