Erbe 10128-002, Instruction Manual

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4-8
4.3.2 Time limit
With normal use, a high-frequency generator is only activated
briefly for performance of an incision or a coagulation by
fingerswitch, pedal or AUTO START. This generally lasts only
a few seconds.
Through an error in the unit, in the accessories or in use, the
high-frequency generator can be switched on unintentionally. To
prevent greater damage due to unintentional activation of the high-
frequency generator, the ICC is equipped with a monitor which
automatically monitors the time limit on the high-frequency
generator. Once a predetermined maximum time limit has been exceeded, this monitor generates
a visible signal. If the high-frequency generator is then not switched off, the generator additionally
produces an acoustic signal and automatically switches the HF generator off. The high-frequency
generator can however be restarted at any time, whereby the time limit is also monitored anew.
In this way, greater damage due to unintentional activation of a high-frequency generator for
undeterminably long times is avoided.
Custom adaptation of the maximum time limit
In consideration of the risk of thermal tissue damage due to unintentional switching on of an HF
generator, an unintentionally switched-on HF generator should be switched off again as soon as
possible automatically. Since the unit cannot automatically distinguish between intentional and
unintentional switching on of an HF generator, the automatic switching off of an HF generator
must not occur too quickly, because this would hinder the operator during cutting and/or
coagulation. Since the risk of thermal tissue damage varies greatly among the various operating
modes, the ICC can adapt and store the maximum time limit for each operating mode and in
each storable program via the Test program no. 10 of at least 3 sec. to a maximum of 900 sec.
(For instructions, see Chapter 6.11).
4.3.1 Unit-related output error
The ICC is equipped with automatic monitoring of the HF output
parameters, which monitors deviations in the actual value from
the set value for the currently set HF output parameters and
produces a warning signal and/or switches off the HF generator
if the deviation is so large than the required quality of the
respective effect (cutting or coagulation) is no longer ensured. In
case of deviations or absence of the required effect, display of a
unit-related output error allows the operator to immediately check
whether the defect is caused by the unit or not.
Deviations in the HF output parameters from the currently set HF output parameters on the ICC
can only result from loads which have too low a resistance, e.g. coagulation electrodes that are
too large, a short circuit between the active and neutral electrode, or due to an error in the unit.
4.3. Description of the safety features
The ICC 200 is equipped with the following safety features:
4.3.1 OUTPUT ERROR = Automatic monitoring of unit-related output error
4.3.2 TIME LIMIT = Automatic monitoring of the time limit
4.3.3 NESSY = Neutral Electrode Safety System
4.3.4 Protection against operating error