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This may be accomplished by direct current from dry-cells in a penlight-type device. Electrosurgery, by contrast, uses radio frequency (RF) alternating current to heat the tissue by RF induced intracellular oscillation of ionized molecules that result in an elevation of intracellular temperature.
Electrosurgery and surgical diathermy involve the use of high-frequency A.C. electric current in surgery as either a cutting modality, or else to cauterize small blood vessels to stop bleeding. This technique induces localized tissue burning and damage, the zone of which is controlled by the frequency and power of the device.
The duty cycle is defined as the ratio between the pulse duration, or pulse width and the period of a rectangular waveform Spectrum in relation to duty cycle. A duty cycle or power cycle is the fraction of one period in which a signal or system is active.
Very high frequency electric current causes tissue burning, but do not stimulate the nerves strongly enough to cause cardiac arrest (see electrosurgery). Also important is the pathway: if the current passes through the chest or head, there is an increased chance of death.
The hyfrecator does not require a dispersive return pad, referred-to in the electrosurgery field as a "ground pad," or "patient plate," because the hyfrecator can pass a very low-powered current between forceps tips via bipolar output, or pass an A.C. current between one pointed metal electrode probe and the patient, with the patient's self ...
William T. Bovie (September 11, 1882 – January 1, 1958) was an American scientist and inventor. He is credited with conceptualizing the field of biophysics and with inventing a modern medical device known as the Bovie electrosurgical generator.
[4] [3] The dampening effect on the oscillating current was compared in the NaCl solutions and the compacted cell samples to determine the cell conductivity. Through optimization of the circuit and further experimentation with blood cells and frog leg muscle cells, Höber determined that blood cells have a conductivity equal to 0.18% NaCl ...
Radio frequency (RF) is the oscillation rate of an alternating electric current or voltage or of a magnetic, electric or electromagnetic field or mechanical system in the frequency [1] range from around 20 kHz to around 300 GHz.