2 Safety
20
Operating Manual ARC 250 / 303
900-301_IFU-V2.2_11316-S0-20131023-EN
Lack of preparation, errors in usage or faults in the HF device can cause
damage to the HF device.
Use the automatic monitoring functions to ensure that the HF
device works properly without errors. For information on the
automatic test functions, see section Monitoring functions, page 29.
Ensure that no conductive fluids (e.g. blood, amniotic fluid) have
penetrated the foot switch or the manual switch.
Ensure that the cables for the foot switch and manual switch are
free from short circuits and broken leads.
2.3.6.
Adjusting the settings of the HF device and use of the
accessories
Setting the output power too high can injure the patient. Therefore,
before you increase the output power, ensure that:
the neutral electrode is correctly positioned,
the working electrodes are clean,
and 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 acoustic signal that sounds when the electrode is activated
so that it is always clearly audible.
Nerve and muscle irritations due to low-frequency currents!
In electrosurgical applications (particularly applications generating an
arc), a part of the HF current is converted to a low-frequency current.
This can trigger muscle spasms in patients.
To minimize the risk of injury to the patient, set the power and
effect as low as possible.
Correct usage of the 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.
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