Simultaneous Monopolar Electro Surgery Circuit
Now let’s look at the simultaneous monopolar electro surgery (ESU) circuit path theory.
Like before the electricity flows through every component one after the other, in the ESU until it exits the ESU and enters the hand pieces. In this monopolar sub mode you have 2
hand pieces plugged into the same ESU, at the same time. The RF waveform will then enter the patient at the point where each doctor starts to touch the patient’s tissue, and activate his hand piece. Again it’s the RF waveform [the frequency] that will actually heat up the
fluids in each cell, at each hand piece, until it explodes and becomes smoke plume. The
energy then travels through the patient’s body until it finds the return electrode. The energy
then enters the metallic plate and travels up the wire to reenter the ESU. Now this circuit is
a bit different, we have now created a combination series parallel circuit. In this circuit type
again in the series portion the current is common and voltage is additive. That means the
total voltage of the circuit is equal to the sum of the voltages across each individual resistor
(e.g. Vtotal = V1 + V2 + V3 ...). However, in the parallel portion of the circuit voltage is common and current is additive, across each branch of the parallel portion of the circuit. That
means the total current of the circuit is equal to the sum of the current across each individual
resistor (e.g. Itotal = I1 + I2 + I3 ...). In our combination series parallel circuit we have a
source (ESU), circuit paths (both hand pieces, the patient, and the return electrode), and
two resistors (the patient, and applica F