The electrosurgical circuit includes a generator, two electrodes and the patient . All electrosurgery is bipolar because it involves two electrodes.
Electrosurgery can be delivered through monopolar or bipolar instruments. The main difference between them is where the two electrodes are placed. With monopolar instruments, the dispersive electrode is placed on the patient away from the active electrode, while bipolar instruments have two electrodes at the tip and no need for a dispersive electrode.
Electrosurgery follows the physical rules of electricity.
The generator or electrosurgical unit (ESU) has three main functions:
conversion of the low electrical frequency of the mains (50–60 Hz) to higher frequencies (500 KHz–3 MHz);adjustment of the wattage and, indirectly, the voltage; and control of the duty cycle.
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Manufactuer of disposable medical products: Electrosurgical pencil,grounding plate,skin stapler and ECG electrode
