Pentax EC-380LKp, Owner'S Manual, Page: 21 / 52

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3-4. LASER
Laser equipment should only be used by physicians who have thoroughly studied all the characteristics of the
equipment and who are familiar with the proper techniques of endoscopic laser therapy. The user must carefully
read and follow all instructions in the operating manual supplied with the Laser equipment. The Laser equipment
should be carefully and thoroughly inspected and calibrated. Only the user can determine if the condition of the
Laser equipment is suitable.
1) The user has the option of using a non-explosive gas
for insufflation. Non-explosive gas from a pressure-
regulated and flow-rate controlled source can be con-
nected to the provided or optionally available gas
adapter, Model OF-G11, as illustrated.
2) The gas adapter, which can be secured to the air/water port on the PVE connector, has a luer receptacle to
accept tubing from an external source of non-explosive gas. As long as the air/water feeding tube from a
PENTAX water bottle assembly is connected to the gas adapter and the air pump in the video processor is
turned OFF, non-explosive gas can be delivered.
3) Flow of gas from the nozzle at the distal end of the scope can be checked by placing the tip of the scope under
water and covering the hole on the top of the CO
2
/water valve. The flow rate of gas should be no greater than
the rate of air delivery when the air feeding valve on the control head of the scope is covered.
4) The water delivery system is activated by depressing the CO
2
/water feeding valve.
WARNING:
The PENTAX endoscopes identified in this manual are compatible with Nd:YAG laser (wavelength
1064 nm) and Diode Laser (wavelength 800 nm ~ 1000 nm) only. Do not use these endoscopes with
other types of laser such as KTP, He-Cd, or Excimer Laser Systems. It could result serious injury to the
patient.
LIGHT GUIDE PLUG
CO
2
GAS
CYLINDER
CO
2
GAS
ADAPTER
OF-G11
PROCESSOR
NOTE:
Never connect an unregulated source of gas to the
PENTAX endoscope.
NOTE:
Set the pressure below 49 kPa (0.5 kg/cm 2 , 7.1 PSI) and the flow rate at about 1 liter/min.
CAUTION:
Open the valve of the CO
2
gas cylinder only AFTER turning off the pump switch of the processor. Failure
to do so will apply excessive pressure to the processor and can cause damage to the air pump.
NOTE:
It should be noted that as long as the valve of the CO
2
gas cylinder is OPEN and the hole at the top of the
A/W feeding valve is NOT covered, CO
2
gas will constantly be vented through the A/W valve into the
room. To reduce excessive CO
2
concentrations, it is, therefore, recommended to close the CO
2
gas cylin-
der valve, work in a well ventilated room, and use air delivery whenever possible during examinations
which are lengthy or in very confined quarters. As an alternative, the optionally available gas/water valve,
Model OF-B130, may be used in place of the standards air/water valve. OF-B130 is a closed two-stage
valve mechanism. Pressing the first stage delivers CO
2
gas and fully depressing the second stage acti-
vates water delivery.
When using the OF-B130 valve, there will be no venting of CO
2
gas into the room.
Replace OF-B130 with the air/water valve OF-B121 after using the CO
2
gas.