Pentax EG-2990i Instructions For Use Manual page 41

9) The objective lens may be cleaned during the procedure by alternately using the
air/water and suction control valves.
CAUTION
Patient material and secretions should be removed from the area of
observation to eliminate the potential to blur the endoscopic image and/or
obscure the illumination system.
Continuing use of the light guide with sticky debris might cause steam
because debris is deprived of moisture by heat. As a result, endoscopic
images become blurry. If steam is found on the light guide during a
procedure, stop it immediately and withdraw the endoscope carefully from
a patient.
NOTE:
Should debris on the objective lens be difficult to clean, one can
temporarily use the HIGH air pressure setting on the video processor and
simultaneously press the air/water and suction control valves. Return air
pressure setting to original selection before proceeding.
10) A Water Jet may be directed at the target area during the procedure as necessary.
USE STERILE WATER ONLY.
NOTE:
Leaving the finger on the button could cause the function (hard copy or
recording, etc.) to be activated inadvertently.
11) Image capture, hard copy, video recording, etc. may be carried out as necessary.
12) Before withdrawing the endoscope, trapped air should be suctioned to reduce
patient discomfort.
13) When attempting to withdraw the endoscope, return the angulation lock levers to
their free position. Always withdraw the endoscope under direct visualization.
WARNING:
If for any reason, the image is lost due to power shortage, lamp or video
processor failure, etc. the angulation lock levers should be released, the
endoscope tip should be straightened to its neutral position, and the
insertion tube should be carefully and slowly withdrawn from the patient.
If the endoscope is withdrawn without releasing the angulation lock lever,
it may cause an injury such as perforation to the patient.
(1)
Top spoke of angulation knobs in this position
corresponds to neutral distal tip orientation
Figure 3.4
(2)
(3)
(3)
– 36 –
(1) Up/Down Angulation
Lock Lever
Free Position (Lock
Released)
(2) Right/Left Angulation
Lock Knob
Free Position (Lock
Released)
(3) Lock Position