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Electrosurgery Safety
W A R N I N G
The monitoring system contains protection against interference generated by
electrosurgical instruments. However, operating conditions, surgery site with
respect to the location of ECG electrodes, or the type of instrument used, may
cause noise on the ECG. The noise is generated at the tip of an electrical
knife and is difficult to completely eliminate because of the frequency
components of the ECG. To reduce electrosurgical interference, take the
following precautions:
Location
Locate the electrosurgical unit as far as possible from this unit and the
patient cable. This will help reduce interference on the ECG through the
monitor or cables.
Power Supply
Connect the electrosurgical unit to a power supply that is different from that
of the monitor. This will help prevent interference through the power
cable.
Electrode Placement
The amount of interference is considerably different depending on the
electrode position and surgery site. Place the ECG electrodes as far
away as possible from the surgery site and the ground plate. Do not
place electrodes in the path between the surgery site and the ground plate.
If the electrodes are placed in this path, the amount of interference will be
quite large. Position (+) and (–) electrodes as close as possible to each
other.
Ground Plate
When using electrosurgical instruments, make sure the contact between
the patient and the ground plate is secure. If the connection is
incomplete, the patient may suffer a burn at the electrode site.
Precautions about Magnetic Resonance Imaging
W A R N I N G
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Do not operate this equipment in magnetic resonance imaging (MRI)
environments.
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When conducting MRI test, remove the electrodes and sensors connected
to the patient (test subject).
The local heating caused by the induced electromotive force may cause
burn injury to the patient (subject). For details, refer to the operation
manual for the MRI testing device.
