Olympus UHI-4 - Page 17

Important Information — Please Read Before Use
11
HIGH FLOW INSUFFLATION UNIT UHI-4
• Never install and operate the high flow insufflation unit.
in locations where:
 The concentration of oxygen is high;
 Oxidizing agents (such as nitrous oxide (N
2
O)) are
present in the atmosphere;
 Flammable gases are present in the atmosphere;
 Flammable liquids are near.
Otherwise, explosion or fire may result because the high flow
insufflation unit is not explosion-proof.
• Position the patient port of the insufflator and as much of the
associated tubing as is practical above the insufflation site,
so that any patient fluids inadvertently entering the tubing do
not drain back into the insufflator via gravity.
• Always keep the gas cylinder in the upright position. Fasten
the cylinder to a wall or another stable structure to prevent it
from toppling. If the gas cylinder is placed horizontally or in
an inclined position, liquefied CO
2
may be transmitted into
the insufflation channel inside the UHI-4 and normal
insufflation may become impossible.
• To prevent gas embolism caused by intra-abdominal
over-pressurization from the combined use of an insufflator
and a laser device, argon-enhanced coagulator or other gas
supply devices, carefully read and understand the following
before using:
 When performing endoscopic using an insufflator and a
laser device, argon-enhanced coagulator, or other gas
supply devices simultaneously, both instruments become
a source of supply for gas. Accordingly, the desired
pressure in the abdomen is reached in a shorter time than
when a pneumoperitoneum device is used alone. In these
cases, be careful that the cavity does not become
over-pressurized.
The laser device, argon-enhanced coagulator, and other
gas supply devices are not equipped to monitor the cavity
pressure (automatic termination of insufflation, warning
light or alarm). Although the insufflator is equipped with
these functions, it does not always prevent gas embolism
inasmuch as this depends on the patient and the
condition of the infected area. We ask that the physicians
make a suitable judgment from a professional standpoint
himself.