Instructions for use Primus Infinity Empowered SW 4.5n 97
Operation
SORC (Sensitive Oxygen Ratio
Controller)
Primus Infinity Empowered is fitted with an elec-
tronic O2 minimum delivery system to avoid hy-
poxic gas mixtures when N
2O is selected as carrier
gas. For fresh-gas flows greater than 0.8 L/min, the
minimum O2 concentration is limited to 25 %.
At fresh-gas flows below 0.8 L/min, the O
2 concen-
tration is automatically increased to a value corre-
sponding to an O
2 flow of 200 mL/min. If this control
mechanism is activated, the O2 % value is also
highlighted with a yellow background in addition to
the active settable value. The minimum oxygen de-
livery consequently equals 200 mL/min when using
N
2O as carrier gas.
The SORC function is not active when Air is se-
lected as carrier gas and 100 % Air can be metered
throughout the entire flow range.
Fresh gas failure detection
During operation, Primus Infinity Empowered
checks that the piston cylinder unit has a sufficient
level of fresh gas.
If a sufficient level of fresh gas is not possible, the
system first displays message FG LOW OR LEAK.
In addition, alarm P
INSP NOT ATTAINED or
VOLUME NOT ATTAINED is displayed if the
system is unable to maintain the defined
ventilation.
To ensure continued ventilation, the anesthesia
machine will use ambient air to supplement the gas
volume if it is too low. This may change the gas
composition. Carefully check the gas composition.
DrägerService can change the behavior of the de-
vice so that it does not use ambient air for supple-
menting the gas volume. The device will then ven-
tilate with limited V
T or PINSP, if possible.
z Increase the fresh-gas flow.
z Seal any possible leaks.
022
100
90
80
70
60
50
40
30
20
10
0
0.2 0.8 18.00
0.5
x
Setting ranges
(maximum)
O2-concentration %
Fresh-gas flow [L/min]
WARNING
Risk of patient awareness
If a complete gas supply failure occurs, fur-
ther operation is guaranteed by supplying the
anesthesia machine with ambient air. Anes-
thetic agents will no longer be delivered and
the inspiratory gas composition will be di-
luted.
Carefully monitor the gas mixture and, if nec-
essary, use IV anesthetics.
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