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KION / KION-i
Exhaust gas
Parallell
I/O
D/A
converter
Pulse width
modulator
A/D
converter
Processor
CON-SW
PC 1730 Control
PC 1730 – Regulation of expiration
Regulation of expiration depends on the following
setting:
• PEEP.
The PEEP V
is used to control the expiratory gas
ALVE
from the patient. The sampling point for PEEP
pressure is located as close to the PEEP V
possible to enhance regulation of PEEP.
The PEEP pressure signal from the P
T
(actual value) is supplied from PC 1750 to
RANSDUCER
the A/D
. The regulation of PEEP (CON-SW)
CONVERTER
controls the opening of the PEEP valve using the
PEEP pressure signal (actual value) and the front
panel setting for PEEP (reference value). This
regulation also uses the Exp. pressure signal for Exp.
channel pressure-drop compensation.
The output signal PEEP valve is supplied to the PEEP
V
from the P
W
ALVE
ULSE
IDTH
signal is pulse width modulated to prevent effects of
hysteresis. The pulse lenght affects the position of
the valve; the longer the pulses – the more closed is
the valve.
E382 E392E 061 01 02 02
PEEP
valve
PEEP
valve
Pressure
CAN bus
CAN
interface
as
ALVE
RESSURE
M
. The control
ODULATOR
Siemens-Elema AB
PC1750 TRANSDUCER
PC1781 PC1781 PC1781 PC1781
3
1
2
4
PEEP
EXP.
INSP.
MAN.
18
16
Tidal Volume ml
14
12
10
8
Minute Volume l/min
6
4
3
O 2 /Air
O 2 /N 2 O
Volume
2
1,5
1,0
0,5
0,3
0,1
Fresh Gas Flow l/min
Preset O 2 Conc.%
28
21
!
100
Mains/Batt. Charg.
Battery On
No Screen
Alarm
Pressure controlled modes:
In pressure controlled modes, the PEEP V
used to regulate the inspiratory pressure. This is
necessary due to the constant fresh gas flow during
inspiration.
The regulation is performed in cooperation with the:
• G
M
D
G
– When Circle System is
AS
ODULE
RIVE
AS
selected.
• I
F
G
V
NSPIRATORY
RESH
AS
ALVE
is selected.
Description of functions
To EVAC
Exp. Tidal Volume ml
Airway P ressure
40
Exp. Minute Vol. l/min
cmH
O
2
mbar
Lower Vol. Alarm Limit
CMV b/min
Upper Press. Limit
Press. Level above PEEP
8
50 60
50
30
6
40
40
60
10
20
40
70
4
30
20
30
70
80
20
30
10
50
20
80
80
2
90
90
1
40
10
90
90
50
10
60
I:E Ratio
PEEP
Trigger Sensitivity
1:2 1:1 2:1
10
Press.
Flow
1:3
4:1
5
15
0
20
Off
Hand Ventilation
Volume Control
Pressure Support
Pressure Control
Circle Sy stem
Non-Rebreathing
Auxiliary
Fresh Gas Outlet
Alarm Silence
!
On
Standby
Off
is also
ALVE
– When Non-Rebreathing
3 - 15
3
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