Polarity control of electrosurgical generator
First Claim
1. A method for controlling an electrosurgical generator, the method comprising:
- applying at least one electrosurgical waveform to tissue through at least one electrode, the at least one electrosurgical waveform including a plurality of cycles, each cycle having one positive half-cycle and one negative half-cycle;
measuring a voltage and a current of the at least one electrosurgical waveform to determine a peak voltage of each of the positive half-cycle and the negative half-cycle;
comparing the peak voltage of the positive half-cycle and the peak voltage of the negative half-cycle to determine generation of electrical discharges; and
adjusting the current of the at least one electrosurgical waveform to regulate the generation of the electrical discharges during each of the cycles based on a comparison of the peak voltage of the positive half-cycle and the peak voltage of the negative half-cycle.
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Accused Products
Abstract
A method for controlling an electrosurgical generator is contemplated by the present disclosure. The method includes applying an electrosurgical waveform to tissue through an electrode. The electrosurgical waveform includes one or more positive half-cycles one or more negative half-cycles. The method also includes measuring voltage and current of the electrosurgical waveform to detect a peak voltage of each of the positive half-cycles and the negative half-cycles and comparing the peak voltage of the positive half-cycles and the peak voltage of the negative half-cycles to determine generation of electrical discharges. The method further includes adjusting the current of the electrosurgical waveform to regulate the generation of the electrical discharges based on a comparison of the peak voltage of the positive half-cycles and the peak voltage of the negative half-cycles.
137 Citations
20 Claims
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1. A method for controlling an electrosurgical generator, the method comprising:
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applying at least one electrosurgical waveform to tissue through at least one electrode, the at least one electrosurgical waveform including a plurality of cycles, each cycle having one positive half-cycle and one negative half-cycle; measuring a voltage and a current of the at least one electrosurgical waveform to determine a peak voltage of each of the positive half-cycle and the negative half-cycle; comparing the peak voltage of the positive half-cycle and the peak voltage of the negative half-cycle to determine generation of electrical discharges; and adjusting the current of the at least one electrosurgical waveform to regulate the generation of the electrical discharges during each of the cycles based on a comparison of the peak voltage of the positive half-cycle and the peak voltage of the negative half-cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electrosurgical generator, comprising:
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an RF output stage configured to generate at least one electrosurgical waveform including a plurality of cycles, each cycle having one positive half-cycle and one negative half-cycle; at least one sensor coupled to the RF output stage, the at least one sensor configured to measure a voltage and a current of the at least one electrosurgical waveform and to detect a peak voltage of each of the positive half-cycle and the negative half-cycle; and a controller coupled to the at least one sensor, the controller configured to compare the peak voltage of the positive half-cycle and the peak voltage of the negative half-cycle to determine generation of electrical discharges, the controller further configured to adjust the current of the at least one electrosurgical waveform to regulate the generation of the electrical discharges during each of the cycles based on a comparison of the peak voltage of the positive half-cycle and the peak voltage of the negative half-cycle. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An electrosurgical system, comprising:
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an electrosurgical generator including; an RF output stage configured to generate at least one electrosurgical waveform including a plurality of cycles, each cycle having one positive half-cycle and one negative half-cycle; at least one sensor coupled to the RF output stage, the at least one sensor configured to measure a voltage and a current of the at least one electrosurgical waveform and to detect a peak voltage of each of the positive half-cycle and the negative half-cycle; and a controller coupled to the at least one sensor, the controller configured to compare the peak voltage of the positive half-cycle and the peak voltage of the negative half-cycle to determine generation of electrical discharges, the controller further configured to adjust the current of the at least one electrosurgical waveform to regulate the generation of the electrical discharges during each of the cycles based on a comparison of the peak voltage of the positive half-cycle and the peak voltage of the negative half-cycle; and at least one electrosurgical instrument configured to couple to the electrosurgical generator and to supply the at least one electrosurgical waveform to a tissue. - View Dependent Claims (17, 18, 19, 20)
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Specification