Instructions for use Zeus Infinity Empowered SW 2.n 445
Description
Safety concept (HighFlow operation)
There is a second gas analyzer (SGA) in the inspi-
ration to a pathway in addition to the gas sensor in
the Y-piece, in order to safeguard the control loop
function. This gas analyzer checks the control loop
function by monitoring the inspiratory limit values.
The gas analyzers are also checked for plausibility
by mutual comparison of the measured values.
The safety concept increases the fresh-gas flow
(High Flow operation) in the case of error. The ad-
justed concentration values then apply to the in-
creased fresh-gas flow. The control loops are thus
switched off.
O2 emergency delivery
In addition to the electronic fresh-gas mixer, there is
a mechanical emergency O2 delivery system,
which can be operated at any time irrespective of
the system status of the device (even with the de-
vice switched off). The set range of the fine-control
valve for oxygen flow is 0 and 3 up to 12 L/min
(STPD). The position of the open emergency O
2
delivery system is read electrically and a message
is displayed on the operating screen when neces-
sary. This message refers to potential risks.
O2 flush
Two mechanical flush buttons are used. Upon op-
eration of a flush button, an O
2 flow of approx.
35 L/min (STPD) flows into the breathing system:
Each flush button can be operated at any time, in-
dependently of the system status of the device.
Additional oxygen delivery for regional
anesthesia
The additional O2 output supplies an oxygen flow of
0 to 16 L/min (STPD). The additional flow of O2 is
not delivered to the breathing system.
Criteria for starting a flush phase with carrier gas
Air
Start inN
2O or etN2O >6 Vol.%
End after 60 s
and
inN
2O and etN2O <1 Vol.%
Criteria for starting a flush phase with carrier gas
N
2O
Start after a gas balance as follows:
inN
2O + FiO2 + inAGas + 7 Vol.% H2O
(corresponds to 100 % rel. humidity)
<90 Vol.%
End after 60 s
or
a gas balance as follows:
inN
2O + FiO2 + inAGas + 7 Vol.% H2O
(corresponds to 100 % rel. humidity)
>95 Vol.%
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