CO
2
EFFICIENT ENDOSCOPIC INSUFFLATOR Operator’s Manual
Page 5
Section 3.0 THEORY OF OPERATION
The CO
2
EFFICIENT ENDOSCOPIC INSUFFLATOR operates by administering
CO
2
at a maximum flow rate of 3 LPM, and then monitoring the endoscopic pressure.
A mode of operation is selected by the operator, by using a switch found on the front
panel to select from Free Flow Mode and Managed Flow Mode. It is used to change
the rate that the flow is delivered to the endoscopic system. When the switch is set to
Free Flow Mode, the unit will deliver CO
2
at a flow rate of 3 liters per minute
continuous. The clinician will use the air/water valve on the endoscope and visual
feedback of the endoscopic system to manually distend the gastrointestinal tract with
CO
2
.
When the switch is set to Managed Flow Mode, the system will be delivering CO
2
in
a more efficient manner. This mode reduces the amount of CO
2
that is lost through
the air/water valve which is normally lost at a rate of 3 liters per minute. When gas is
not used in the endoscopic system to insufflate, the unit will operate at the Managed
Flow rate of 0.25 to 1.0 liter per minute. This transition to the Managed Flow rate
will occur if the unit senses no need for insufflation in a 2 second time period. When
gas is needed to insufflate, the unit will deliver CO
2
at a flow rate of 3 liters per
minute.
The user will need to place the system into RUN mode in order for it to deliver the
CO
2
to the endoscopic system.
The CO
2
EFFICIENT ENDOSCOPIC INSUFFLATOR has a Pressure Relief Valve
set at 375 mm Hg and an independent redundant Pressure Relief Valve pre-set to 400
mm Hg. Both pressure relief safety devices are active whether the
FLOW STOP/RUN is on or off.
Summary of Contents for CO2EFFICIENT 710302
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