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Chapter 3 Preparation and Inspection
Inspection of remote switch
Inspection of the air feeding function
40
If the object cannot be seen clearly, wipe the objective lens
using a clean, lint-free cloth moistened with 70% ethyl or
isopropyl alcohol.
All remote control switches should be checked to work
normally even when they are not expected for use. The
endoscopic image may freeze or other irregularities may
occur during examination and may cause patient injury,
bleeding and/or perforation.
Depress every remote control switch and confirm that the specified functions
work normally.
1.
Set the airflow regulator on the light source to "High", as described in the
light source's instruction manual.
2.
Immerse the distal end of the insertion tube in sterile water to a depth of
10 cm and confirm that no air bubbles are emitted when the air/water valve
is not operated.
3.
Cover the hole in the air/water valve with your finger and confirm that air
bubbles are continuously emitted from the air/water nozzle.
4.
Uncover the hole in the air/water valve and confirm that no air bubbles are
emitted from the air/water nozzle.
If a stream of air bubbles is emitted from the air/water nozzle
even though the air/water valve is not being operated and the
distal end of the insertion tube is 10 cm or more below the
surface of the sterile water, an irregularity in the air feeding
function may be suspected. If the endoscope is used while
air is continuously being fed, over-insufflation and patient
injury may result.
If air bubbles are emitted from the air/water nozzle, remove
and reattach the air/water valve correctly, or replace it with a
new one. If this fails to stop air bubbles from being emitted,
do not use the endoscope, as there may be a malfunction.
Contact Olympus.
EVIS EXERA TJF TYPE 160VR OPERATION MANUAL
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