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Chapter 3 Preparation and Inspection
ULTRASOUND GASTROVIDEOSCOPE GF-UCT180
Inspection of the balloon and expelling air
• Do not feed water into the balloon when the water level in the
water container is too low. The balloon may not be inflated
properly. If this occurs, refer to Section 13.1,
“Troubleshooting guide” on page 213.
• Detaching the water container from the endoscope just after
removing the air bubbles from the balloon may cause them to
reenter the balloon when inflating the balloon again.
Therefore, confirm that there are no air bubbles in the balloon
according to the following procedure.
1. Check the water level in the water container. If the water level is low, fill the
water container with sterile deaerated water. After adding water to the water
container or removing the water container from the endoscope, cover the
hole in the air/water valve and depress it to the first stage for about
15 seconds. Turn the light source and suction pump ON.
2. Cover the hole in the air/water valve and completely depress the valve to fill
the balloon with deaerated water.
3. Fill the balloon with deaerated water to a diameter of approximately 3 cm.
Remove your finger from the air/water valve. If the balloon is eccentrically
shaped after inflation, gently hold the balloon and turn it around. Confirm
that there are no holes or other irregularities in the balloon.
4. Confirm that there are no air bubbles in the balloon.
5. If the balloon has no air bubbles in it, completely depress the suction valve
until all the water has been aspirated from the balloon.
6. If air bubbles are observed in the balloon, lower the distal end of the
endoscope and repeat Steps 2 through 5 until they are completely removed
from the balloon. After confirming that all air bubbles have been removed,
repeat Steps 2 through 5 two times to make sure they are completely
removed.
7. Completely depress the suction valve until all the water has been aspirated
from the balloon.
8. Tie the rear end of the balloon tightly with a sterile cotton thread.
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