Chapter 4 Operation
63
ULTRASOUND GASTROVIDEOSCOPE GF-UCT180
Air/water feeding and suction
• If the sterile water level in the water container is too low, then
air, not water, will be supplied. In this case, turn the airflow
regulator on the light source OFF and add sterile water to the
water container until it reaches the specified water level.
• If air/water feeding does not stop, turn the airflow regulator
on the light source OFF and withdraw the distal end of the
endoscope from the patient. After withdrawal, replace the
air/water valve with a new one.
If the air/water valve is detached while the distal end of the
endoscope is inserted into a patient, there is a higher
potential of back flow of patient fluids from the air/water
nozzle.
Patient fluids flowing into the air/water cylinder from the
air/water channel may pose an infection control risk.
• Before using a syringe to inject liquid through the biopsy
valve, detach the valve’s cap from the main body. Then insert
the syringe straight into the valve and inject the liquid. If the
cap is not detached and/or the syringe is not inserted
straight, the biopsy valve could be damaged, which could
reduce the efficacy of the endoscope’s suction system, and
may leak or spray patient debris or fluids, posing an infection
control risk.
• If the biopsy valve is left uncapped during the procedure,
debris or fluids could leak or spray from it, posing an infection
control risk. When the valve is uncapped, place a piece of
sterile gauze over it to prevent leakage.
If the endoscope is cold, condensation may form on the
surface of the objective lens and the endoscopic image may
appear cloudy. In this case, increase the temperature of the
sterile water in the water container to between 40 – 50°C
(104 – 122°F) and then use the endoscope.
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