Users Manual

Safety Functions
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8 Safety Functions
8.1 Automatic Venting System
Automatic venting system
The device is equipped with an automatic venting system.
When the insufflator detects an overpressure it automatically activates the venting
system. The venting system releases gas from the cavity until the set nominal pres-
sure has been reached again.
The automatic venting system can be configured in the user menu individually for
each operating mode.
When the venting system is active, the venting threshold is 3 mmHg above set
pressure with a delay of 3 seconds. There is instant venting if actual pressure is
6mmHg above set pressure.
If the venting valve is deactivated, the message
Venting valve deactivated
is shown
when the mode is activated and an acoustic signal is emitted.
The venting function will always be automatically activated without delay if the
abdominal pressure exceeds 45mmHg, even if the venting system is deactivated.
Insufflation source
The manufacturer advises against using additional, non-pressure-controlled insuf-
flation sources during minimally invasive surgical procedures.
The use of CO
2
-cooled lasers and argon beamers can lead to values exceeding the
recommended and safe pressure rating.
WARNING!
Additional insufflation sources / automatic venting system
Make sure the automatic venting system is activated (see Chapter Menu (Over-
view) [}51]). The use of additional insufflation sources increases the intra-abdom-
inal pressure. Continuously monitor intra-abdominal pressure over the course of
the entire insufflation if additional sources are used.
WARNING!
Limited venting system
The venting rate of the automatic venting system is limited. Always monitor the
actual pressure when using additional insufflation sources.
Overpressure
If the overpressure cannot be reduced by the automatic venting system within
5seconds, the display depicts
Overpressure
. An acoustic signal is emitted.
Once the nominal pressure limit of the used operating mode has been reached/ex-
ceeded the display depicts the message
Maximum pressure reached!
A warning
signal is emitted at the same time.
If the actual pressure exceeds 45mmHg for more than 10seconds the display de-
picts the message
Excessive Overpressure
along with an acoustic signal.
8.2 Occlusion
Warning display "Occlusion"
When the tube, Veress cannula, or trocar experiences a blockage, the display de-
picts
Occlusion
and gives an acoustic signal. The actual pressure displays
0mmHg
.
The acoustic signal can be activated/deactivated in the user menu.
CAUTION!
Measurement in the body cavity
The pressure in the body cavity cannot be measured during an occlusion!
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DRAFT