Pentax EG-2990i Instructions For Use Manual page 50

CAUTION:
To avoid user burn and/or unexpected burn to the patient, follow the
instructions below before high frequency energy is delivered.
1) Do not touch the exposed metal parts of the endoscope with unprotected
skin to avoid burns while using an electrosurgical device. Be sure to wear
protective gear such as rubber gloves and goggles.
2) The position of the target area, the insulated distal portion of the
electrosurgical device and the active portion of the electrosurgical device,
should be visible.
3) The active portion of the electrosurgical device should not touch the
metallic distal portion of the endoscope directly or via fluids.
4) The metallic portion of the endoscope should not touch the surrounding
tissue directly or via fluids.
5) The active portion of the electrosurgical device should not touch the
surrounding tissue directly or via fluids.
6) The head of any lesion such as polyp should not touch the surrounding
tissue directly or via fluids.
7) Physicians and assisting personnel should avoid contact with the patient
while high frequency energy is delivered.
8) To avoid the risk of thermal injury, use only insulated devices.
N e v e r u s e n o n - i n s u l a t e d d e v i c e s w h i l e p e r f o r m i n g e n d o s c o p i c
electrosurgical procedures.
CAUTION:
Before start using electrosurgical device, the noise level should be checked
to make sure that problems that interfere with endoscopic examination
such as loss of image will not be caused by the existing noise.
It should be recognized that the use of electro-surgical devices employing
high frequency current may interfere with the normal endoscopic image
and this interference is not indicative of a malfunction of the video
endoscope system. PENTAX has developed a condenser earth cable,
model OL-Z3 intended to reduce potential RF interference and electronic
noise that may appear in the endoscope image when using electrosurgical
device. Ensure that cable OL-Z3 is correctly connected between the
endoscope and video processor as described in the instructions provided
with the OL-Z3. If electronic noise appears in the endoscope image when
using the OL-Z3, select a high frequency setting to minimum levels
capable of achieving the desired clinical effect.
(2)
Figure 3.11
(1)
– 45 –
(1) To Video Processor
(2) To Endoscope