Imaginary Impedance Process Monitoring and Intelligent Shut-Off
First Claim
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1. An electrosurgical generator for supplying electrosurgical energy to tissue, comprising:
- sensor circuitry configured to measure at least one of an imaginary impedance and a rate of change of the imaginary impedance of tissue; and
a controller configured to regulate output of the electrosurgical generator based on the at least one of the imaginary impedance and the rate of change of the imaginary impedance.
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Abstract
An electrosurgical generator for supplying electrosurgical energy to tissue is disclosed. The generator includes sensor circuitry configured to measure an imaginary impedance and/or a rate of change of the imaginary impedance of tissue. The generator also includes a controller configured to regulate output of the electrosurgical generator based on the measured imaginary impedance and/or the rate of change of the imaginary impedance.
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Citations
20 Claims
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1. An electrosurgical generator for supplying electrosurgical energy to tissue, comprising:
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sensor circuitry configured to measure at least one of an imaginary impedance and a rate of change of the imaginary impedance of tissue; and a controller configured to regulate output of the electrosurgical generator based on the at least one of the imaginary impedance and the rate of change of the imaginary impedance. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for supplying electrosurgical energy to tissue, comprising the steps of:
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measuring at least one of an imaginary impedance and a rate of change of the imaginary impedance of tissue; and regulating output of the electrosurgical generator based on the at least one of the imaginary impedance and rate of change of the imaginary impedance. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for supplying electrosurgical energy to tissue, comprising the steps of:
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measuring an imaginary impedance and a rate of change of the imaginary impedance of tissue; and regulating output of the electrosurgical generator based on at least one of the imaginary impedance and rate of change of the imaginary impedance, wherein the regulating step further includes the step of;
comparing the rate of change of the imaginary impedance with a first predetermined threshold and a second predetermined threshold. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification