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2) Inspection of Deflection Controls and Locks
a) Slowly manipulate the Up/Down and the Right/Left
control knobs to see that they function smoothly. Be
certain that a full and appropriate range of deflec-
tion is possible.
b) Engage the deflection locks to be certain that the
position of the deflected tip can be stabilized.
CAUTION:
To avoid damaging the endoscopes, do NOT twist, rotate or bend excessively any of the rubber strain
relief (
①
,
②
) during inspection, clinical use, reprocessing or any handling activity. Be particularly cautious for
the insertion tube strain relief (
①
). When wiping the insertion tube and the umbilical cable, use a slow back
and forth motion to wipe them along the tube/cable. Never apply excessive force or torque on these strain
reliefs or slim tubes/cables. During ANY handling of the instrument avoid excess force, twisting, rotation and/
or bending of the actual insertion tubes and umbilical cables to prevent inadvertent damage (crush,
compression, deformity, etc.) to these parts as well as to internal components contained within the
endoscope.
U
L
R
D
F
F
U
L
R
D
F
F
U
L
R
D
F
F
Twisting or Rotating
Bending
RIGHT-LEFT
UP-DOWN
NOTE:
The deflection locks are of the friction type and the degree of friction is adjustable. The degree of locking
friction depends on the rotational position of the lever.
CAUTION:
ANY lack of smooth operation of the deflection controls may be an early indication of internal damage to
and/or part(s) failure within the endoscope’s angulation system. To avoid the possibility of further endo-
scope damage or the potential for malfunction of the angulation system, do NOT use the endoscope if the
angulation mechanism does not operate properly.
Prior to use ensure that the deflection controls can rotate smoothly, that there is no grinding or excess
friction within the angulation system and that the distal bending section bends freely and smoothly.
NEVER APPLY EXCESSIVE FORCE TO THE DEFLECTION CONTROLS!
When an endoscope exhibits excessive “knob play” or if angulation is lost in any direction, do NOT use
the instrument. Excessive “knob play” can be defined as rotating of the angulation control knob(s) in any
one direction for more than 30 degrees without any corresponding distal tip deflection. The examples
above are indications that service is required to avoid more serious problems with the angulation control
system, including angle or pulley cable/wire breakage and/or the possibility of a “frozen” distal bending
section.
A “frozen” bending section can make instrument extraction from a patient more difficult.
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