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Chapter 7 Troubleshooting
HIGH FLOW INSUFFLATION UNIT UHI-3
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If the insufflator emits a warning (warning light or alarm)
for intra-abdominal over-pressurization, quickly open the
stopcock or valve of the trocar.
In this event, reduce the amount of outflow from the laser
device, argon-enhanced coagulator, or other gas supply
device.
If use is continued while the alarm is sounding, there is a
risk of gas embolism due to intra-abdominal
over-pressurization.
• Carefully monitor the patient’s condition. Patients coming out
of anesthesia may have increasing abdominal pressures.
• When the excessive pressure warning lamp lights and the
alarm sounds:
The pressure within the abdominal cavity is 5 mmHg or more
above the set pressure. Immediately perform the appropriate
remedial actions.
• If the suction tube is correctly connected, approximately
10 seconds later, the automatic suction function will start
working. Suction will continue until the abdominal pressure
drops to the set pressure.
• When relief mode is set to ON (active) and the abdominal
pressure is 5 mmHg or more above the setting, the gas is
released through the internal channel until the abdominal
pressure readout reaches the set pressure.
Tube obstruction
• When the tube obstruction warning lamp lights and the alarm sounds:
The reason may be that the veress needle’s distal end is clogged, the
insufflation tube has buckled, the stopcock on the veress needle is
closed or insufflation is performed into an abnormally narrow cavity,
such as subcutaneously.
• When a filter is used with the device, backward flow of body fluids (e.g.
blood) may clog the filter and cause a tube obstruction alarm. In these
conditions, the abdominal pressure cannot be measured, so
immediately check the possible reasons and remedy as appropriate.
• This warning is not performed during the STOP MODE.