Electrical characteristics of the sparks produced by electrosurgical devices.
The electrical characteristics of the sparks produced between the active electrode and the biological tissue during electrosurgical procedures have been experimentally investigated. The results have shown that the minimum voltage required to initiate a spark depends on the applied voltage polarity resulting in electrosurgical voltage asymmetry. This voltage asymmetry is capable of producing dc levels that can result in tissue electrostimulation or direct current burns as discussed in this paper. The experimental setup and the conditions, under which the results have been obtained, including the techniques used to improve experimental reproducibility, are reported in detail.
Schneider
Bertoldo
B
Federal University of Technology, Paraná, Av. Sete de Setembro, Curitiba, PR, Brazil. bertoldo@utfpr.edu.br
Abatti
Paulo José
PJ
D000818:Animals; D004574:Electromagnetic Fields; D004598:Electrosurgery / Q000295:instrumentation* / Q000379:methods*; D004735:Energy Transfer / Q000502:physiology*; D019544:Equipment Failure Analysis; D066298:In Vitro Techniques; D018482:Muscle, Skeletal / Q000502:physiology* / Q000601:surgery*; D011829:Radiation Dosage; D011874:Radiometry / Q000379:methods*; D013552:Swine