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If the laser unit is found to be in any way defective, the findings must be duly entered in
the device logbook and reported to the Laser Safety officer. Besides, either Gebrüder
Martin or a service technician authorized by Gebrüder Martin to carry out repairs should be
contacted as soon as possible. Never use the system as long as it is defective!
2.7
Pilot Laser Safety Instructions
The radiation emitted by the red pilot laser (diode laser, wavelength 635 ± 10 nm) is relatively
harmless. For example, this type of radiation cannot damage the skin or ignite any materials
present in the operating room. However, it can harm the human eye! Eye damage cannot be
ruled out if intensive pilot laser light accidentally hits the eye several times during a working
day.
The pilot light brightness can be adjusted by the operator. The maximum intensity is about
2 mW, which corresponds to laser class 3B.
Attention!
Upon switching on the unit, visible pilot laser radiation is emitted at the front end
of the applicator system (focusing handpiece or scanner) if the pilot laser has not
been switched off by pressing the yellow-backlight pilot laser button. To avoid
eye damage, never stare into the beam exit (aperture) of the applicator system
when this button is on! Note that while the "D 10600 nm L4" antilaser goggles
provide adequate protection against CO
regard to pilot laser radiation!
In contrast, the scattered radiation produced by the pilot laser light (e.g. the light reflected by
the target tissue) is completely harmless even at maximum output power (2 mW).
To sum it up: No special eye protection (such as protective goggles) is required in connection
with the pilot laser light, provided that the instructions outlined above are duly observed.
As the pilot laser light takes the same path through the optical fiber system as the CO
beam, it can be conveniently used to check the laser delivery system for integrity. If no pilot
laser spot is produced at the distal end, or if the spot has a low intensity or unclear/irregular
shape, this may indicate damage or malfunction in the delivery system.
2.8
Laser Smoke
Caution!
Laser smoke (plume) could contain viable tissue particles.
The application parts installed at the front end of the articulated mirror arm are connected to
the laser unit's irrigation gas connector. The irrigation gas exits the focusing handpiece at its
distal end, usually together with the laser beam. Its function is to clear the optical beam path
12
MCO25plus Operating Instructions
laser radiation, they are ineffective with
2
laser
2
V 4.1
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