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Glossary
14 Glossary
Ancillary equipment
An equipment that supports and/or extends a device in its
function.
Applied part
An applied part, according to standard IEC 60601-1, is a part of
a medical electrical equipment that comes into physical contact
with the patient, e.g. an HF instrument. Or, it is that part of an
medical electrical equipment through which current can flow
between the patient and the medical electrical equipment, e.g.
the neutral electrode socket.
Autoclaving
Sterilization with saturated steam.
Crest factor
The crest factor is a waveform parameter of alternating current.
It shows the ratio of peak values to the effective value. High
crest factors indicate peaks. To give a reliable statement on
the effect that the height of a crest factor has, it is necessary to
distinguish if a cutting mode or a coagulation mode is used. For
cutting modes it can be said, that the higher the crest factor is,
the higher is the thermal effect on the tissue (incl. coagulation
depth).For coagulation modes it can be said, that the higher
the crest factor is, the stronger is the formation of sparks. This
can be unwanted, as the risk of tissue carbonization rises with
sparks. However, strong sparks can also be desired, e.g. for the
SprayCoag mode, where very strong sparks are used for contact
free, superficial coagulation.)
Deionized water
Water without anions and cations of salts. Also called
demineralized water (DI water or DM water).
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