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Chapter 4 Operation
ULTRASOUND GASTROVIDEOSCOPE GF-UCT180
4.2 Observation of the ultrasound image
The sterile deaerated water immersion method
• Completely insert the water feeding valve (MD-744) of the
water supply unit (UWS-1) into the biopsy valve (MAJ-853).
Improper connection may cause water to leak.
• If no balloon is attached, do not depress the suction valve
completely. The balloon channel may be clogged.
1. Position the distal end of the endoscope near the target site and push the
“FREEZE” switch on the ultrasound system to change the ultrasound image
to the REAL-TIME mode.
2. Attach the water supply unit’s water-feeding valve to the biopsy valve of the
endoscope.
3. Depress the water supply unit’s water feeding valve as described in its
instruction manual and supply the necessary amount of sterile deaerated
water.
The balloon method
• Do not inflate the balloon to a diameter of more than 3 cm.
• 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 the water container is removed from the endoscope while
inflating the balloon, cover the hole in the air/water valve and
depress the valve to the first stage for about 15 seconds. By
doing so, air bubbles can be prevented from entering the
balloon.
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