Aztec GEM II Manual page 12

7. What if a ring has to be removed from an
unconscious patient?
8. What if water based gel is not available.
Is there another product commonly
available that can be used?
11
First if using a diamond disc check condi-
tions of the disc (See Question 6).
It is important to warn the patient that
there will be a heat build-up in the ring and
that as soon as they feel the ring getting
warm to notify the operator. The operator
should stop immediately wipe away the
gel from the ring and re-apply fresh cold
gel before continuing the cutting process.
Normally by this stage the ring will be virtu-
ally cut through so that the second phase of
cutting will be short lived.
According to a research study in the brain
journal of Neurology 125 issue 3 pp. 501-
510 on 'Pain Threshold on Normal Skin!'
The range of warm sensation is 37.8 ±
28°C. Redness of the skin equivalent to sun
burn occurs around 44-45°C. In tests we
have carried out on rings that have water
based gel applied to the ring surface prior
to cutting after 60 seconds of continuous
cutting temperature on the surface of a ring
made of brass 4mm x 1mm thick measured
38-39°C. After a further 60 seconds the
surface temperature had reached 44-45°C.
A sensible precaution to take would be to
cut for 60 seconds, stop, wipe away old gel
and replace with fresh cold gel and re-start
the cutting process for a further 60 seconds.
As the cutting process has been interrupted
the ring surface temperature would not
reach 44°C. It is unlikely a 3rd phase of cut-
ting would be required.
We have found that liquid soap from a soap
dispenser works well. It helps to lubricate
the ring area and makes inserting the metal
guard section of the finger guard much
easier. It also collects the debris from the
cutting process.
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