PLASMA ELECTROSURGICAL EXPOSURE APPARATUS Russian patent published in 2010 - IPC A61B18/10 A61B18/12 

FIELD: medicine.

SUBSTANCE: invention refers to medical equipment, namely to electrosurgical apparatuses. An electrosurgical apparatus for biological tissue dissection comprises a high-frequency current generator with a control unit, a galvanic isolation unit connected with an active electrode, an intervalometre and a twin comparator. Between the high-frequency current generator and the twin comparator, there is an instrument resistor with its output connected to a peak detector connected through the twin comparator to an input of the intervalometre connected to an input of control circuits of the high-frequency current generator to form the first feedback circuit. The instrument resistor is connected with an input of a high-frequency filter unit connected to the third input of the control circuits of the high-frequency current generator to form a sparkover protection circuit. An output of the galvanic isolation unit is connected with an average voltage detector connected to the second input of the control circuits of the high-frequency current generator to form the second feedback circuit.

EFFECT: application of the invention provides high stability of electrosurgical parametres and performance reliability of the plasma burning device.

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