Fukuda Denshi DS-8400, Service Manual

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Electrosurgical Instrument
 The monitoring system contains protection against interference generated by electrosurgical instruments.
However, depending on the operating conditions, surgery site with respect to the location of ECG electrodes,
ground plate attachment condition, or the type of instrument used, it may cause burn injury at the electrode site
or noise on the ECG. The noise is generated at the tip of the electrosurgical 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 equipment 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 this equipment. This will help
prevent interference through the power cable.
Electrode Placement
The amount of noise 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 from burn at the electrode site.
 The stored data will not be affected. The measurement accuracy will temporarily decrease during
electrosurgery, but it will not compromise the safety of patient and the equipment.
 When using the electrosurgery-proof type ECG relay cable, the impedance respiration cannot be measured, and
its numeric data and waveform will not be displayed. When measuring in an environment where electrosurgery
is not performed, make sure to use the standard ECG relay cable.
 As this equipment utilizes capacitive touch panel, the energy from the electrosurgical knife may pass through
the cable to the touch panel causing unintentional touch panel control. Locate the cables as far away as possible
from the touch panel.
MRI (Magnetic Resonance Imaging)
MR Unsafe-Keep away from magnetic resonance imaging (MRI) equipment.
 Do not use this equipment in magnetic resonance imaging (MRI) environments.
 When conducting MRI test, remove the electrodes and sensors connected to the patient (test subject).
This equipment may be pulled towards the MRI device. Also, the local heating caused by the induced
electromotive force may cause burn injury to the patient or performance degradation, failure, damage of this
equipment.
For details, refer to the operation manual for the MRI testing device.
WARNING
WARNING