4
2 • Notes on Safety
Danger of suffocation:
uncontrolled argon flow
Precautionary measures
Operating errors
Disregarding or falsely
interpreting error messages
Confusing actuation switches
and actuation signals
Do not use laser safety goggles
WARNING! The APC 300 may only be operated with argon. A cylinder
containing a dangerous gas could be connected to the cylinder
connection of the unit. Check each cylinder to ensure that it really does
contain argon: identification must not be damaged or missing.
WARNING! Argon build-up in the air being breathed can cause
suffocation. Symptoms are drowsiness, rising blood pressure and
breathing difficulties. In an atmosphere of pure argon, sudden loss of
consciousness and suffocation occur without prior warning.
When the APC is used in the manner intended the concentration of argon
in a room reaches about 1% in a room measuring 6m x 6m x 3m in 100
min. this argon/air mixture is completely harmless.
A short hissing noise will be heard when the gas valves are opened due
to the argon flowing in the hoses. If this hissing continues for longer
than 2 sec. when a cylinder is opened, there is a leak and the argon
cylinder must be closed again immediately. The unit may not be used
until the leak has been rectified.
Make sure that the hoses are faultlessly (tightly) connected to the APC
300 and the gas cylinder. This also applies to the connection of the
pressure reducer to the argon cylinder.
Close the safety valves of the argon cylinders after use.
Operating errors, confusion, disregarding error messages
WARNING! The APC 300 possesses an instrument identification facility
which assigns to each instrument appropriate CUT flow and COAG flow
values (l/min) for the application. The set values can naturally be altered
within limits. If an insufficient flow rate is selected, the applicator can
sustain damage. Read CHAPTER 7: Description of the graphical interface
of the APC 300
à
.
WARNING! A large number of different instruments can be connected
to the APC 300 or to the electrosurgical unit, e.g. for cutting, bipolar
cutting, coagulation, bipolar coagulation and for argon plasma
coagulation. Depending on the actuation concept and setting, these can
be activated via foot and/or finger switches. Do not confuse the actuation
switches and actuation signals. Read CHAPTER 8: Actuation concepts
à
. Please comply at all costs with the settings and connections described.
If in doubt, check which instrument is actuated by which key and which
pedal! Never place instruments on the patient or in the immediate vicinity
of the patient.
WARNING! The APC 300 is equipped with an error recognition and
error reporting system. Take note of visual and audible error indications.
Do not set the volume of the actuation signals for COAG, CUT and
PURGE too low.
It is possible that the APC 300 display may no longer be visible with
laser safety goggles.
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