2 Safety
900-400_IFU_V1.0.0.6.17.9_20140-S2-20130604-EN
Operating Manual ARC 400
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2.3.6. Configuring HF device settings and using accessories
Setting the output power too high can injure the patient. Therefore, before you
increase the output power, ensure that:
the neutral electrode is attached properly;
the working electrodes are clean;
the plug connections are all correct.
Setting the HF device correctly
To prevent inadvertent (thermal) tissue damage during operations on body parts
with small cross sections and in areas with high resistance (bones or joints), use
the bipolar method in these areas.
Set the level of the acoustic signal that sounds when the electrode is activated so
that it is always clearly audible.
Risk of nerve or muscle excitation by low-frequency currents.
During HF surgical operations (especially when an arc is formed), part of the HF
current is converted into a low-frequency current. This current can trigger muscle
contractions in the patient.
To minimize the risk of injury to the patient, set the power and the effect as low as
possible.
Correct use of accessories
Use only insulated accessories.
Check all electrodes for sharp edges and projecting parts before use.
Use only electrodes that are free of defects and in good working order.
Never place active electrodes on or near the patient.
Do not remove hot electrodes from the patient’s body directly after cutting or
coagulation.
Ensure that there is sufficient distance between the patient cables and the cables
of the HF device.
Do not run the patient cable across the patient.
