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Manuale d’istruzioni / Instruction’s Manual / Manual de Instrucciones
MA036IGBEa
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It is possible to use either single plate neutral reference electrodes or electrodes with split conductive
zone so to watch the plate to patient contact during the surgical intervention.
Control of the units is via front panel keys and display; mains inlet is located on the rear panel.
The units have automatic control systems that, monitoring the internal parameters, signal the possible
damages/errors that are found.
The operational parameters that are used are constantly stored so that, every time the unit is switched
on or the operative method is changed, the last utilized parameters are recalled.
The level of the emission sound can vary; every operator can choose his own level according to the
noise of his working ambient.
Power output can be actived either through holder-handles with pushbuttons or through single or
double foot switch command. Moreover, applying a special optional adapter it is possible the unit
connection to bipolar forceps.
1.4 MONOPOLAR CUT
Monopolar cut is the sectioning of the biological tissue achieved by the high-density passage of HF
current, which is concentrated at point of the active electrode. The HF current, when it is applied to the
tissue, through the point of the active electrode, it creates intense molecular heat in the cells so high
that explosion of it is caused.
The cut effect is achieved by moving the electrode through the tissue and destroying the cells one after
the other. The movement of the electrode prevents the propagation of the side heat in the tissue, thus
limiting to a single line the cells’ destruction.
The best HF current for cutting is pure sine wave without any modulation that cuts very smoothly and
provides the least thermal effect with poor haemostasis while cutting. Because its effects can be
precisely controlled, it can be used safely without damage to the bone, but since good coagulation
while cutting is one of principal benefits of using electrosurgery a current with a certain amount of
modulation is desirable.
The following rules help the operator to obtain good cutting, however every user must follow first of all
his professional judgement as he does every time in his practice.
•
Keep the tissues moist but not wet
•
Survey the stroke before activate the electrode
•
Keep the electrode perpendicular to the tissue
•
Activate the electrode before making contact with the tissue
•
Maintain clean the electrode’s tip (the optional sponges F7520 to clean the electrodes are adviced).
•
Wait at least five seconds before to repeat a stroke.
When the output power is properly set there should be:
•
no resistance to the electrode movement through the tissue
•
no change in the cut surfaces colour
•
no fibres of tissue remained onto the electrode
1.5 MONOPOLAR COAGULATION
Monopolar coagulation is the haemostasis of small blood vessel of the bodily tissue through passing of
high frequency current in correspondence of active electrode. When the current density is reduced and
a broad-surfaced electrode is used, to dissipate the energy over a larger area, the effect is to dry out the
surface cells, without deep penetration, resulting in coagulation. These coagulate surface cells then
serve as a layer of insulation, preventing heat derived by successive applications of current from
penetrating too deeply.
The current normally used for coagulation is modulated and depending from the modulation percentage
is the smoothness of cutting, goodness of haemostasis and likelihood of tissue destruction. Deeper
current modulation brings to somewhat roughly cutting and the chance of some slight depth of tissue
destruction but more efficient coagulation.
The following rules help the operator to obtain good coagulation: however every user must follow first
of all his professional judgement as he does every time in his practice.
•
Select a ball or heavy wire electrode
