Pentax EG-2990i Instructions For Use Manual page 39

CAUTION:
The endoscope not necessarily can be used trans-nasally to all patients
because there are individual differences in the shape and size of patient's
nasal lumen, as well as the receptivity of trans-nasal insertion. There is a
potential for nasal lumen injury if trans-nasal insertion is forced.
Whether to insert trans-nasally should be confirmed, and carefully judged
by the doctor. The patient should be appropriately prepared prior to the
endoscopic examination in accordance with the intended point of entry into
the patient.
Figure 3.3
4) Adjust the intensity of the video processor to obtain a brightness level suitable for
observation.
CAUTION:
The light emission from the endoscope could cause thermal injury. To
minimize the risk, use only the minimum amount of brightness and avoid
close stationary viewing and unnecessary prolonged use.
5) The angulation controls should be used as needed to position the endoscope.
Angulation of the tip should be performed under direct vision in a gentle and
deliberate manner. Should resistance be encountered, never apply excessive force.
WARNING:
Ensure that the angulation controls can rotate smoothly, that there is
no grinding or excess friction within the angulation system and that the
bending section bends freely and smoothly.
NEVER APPLY EXCESSIVE FORCE TO THE ANGULATION CONTROLS!
ANY lack of smooth operation of the angulation controls may be an
early indication of internal damage to and/or part(s) failure within the
endoscope's angulation system. To avoid the potential for malfunction
of the angulation system, do NOT use the endoscope if the angulation
mechanism does not operate properly. Use of endoscope with suspect
angulation mechanism could lead to angulated distal tip to not being able
to be released and could cause possibly perforation.
If during a procedure angulation is lost in any direction such as when "cables
snap" (broken pulley wire, broken angle wire, etc.), do NOT continue to
use the instrument and do NOT rotate the angulation control knob. Should
the angulation system fail for any reason, stop the procedure, release the
lock lever and carefully withdraw the endoscope under direct visualization.
If the endoscope is withdrawn without releasing the angulation lock lever,
it may cause an injury such as perforation to the patient.
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