Dual Electrode Lesion; Caution - NeuroTherm NT1100 Operator's Manual

Dual Electrode Lesion

Caution

When using dual electrode mode, the operator must insure that the two electrodes are not
touching, as this will prevent any heating and thus will not heat the tissue. If the electrodes are in
physical contact at their exposed tips, the impedance will read 0 ohms, and a warning-short
circuit will be displayed. (The NT 1000 is short circuit protected and cannot be damaged by
shorting the outputs.
Dual Electrode size and shapes
Additionally, it is important to realize the relative lesion shapes that are obtained at different
electrode spacing. Typical shapes are shown in the pictures below-
These lesions were made at 80 C for 90 seconds. Notice that at 2 mm spacing, the lesion is
essentially the same shape as a single electrode lesion, only larger. The lesions take on more of
a dumbbell shape at 6 mm. At 8 mm and 10 mm the lesions are essentially the same size and
shape as two independent lesions.
Document 109.00
NEUROTHERM RADIO FREQUENCY LESION GENERATOR
OPERATORS MANUAL
®
MODEL NT1100
10September2012 Issue 06
7-12