Electrosurgical power control
First Claim
1. A method comprising:
- determining a value of a parameter, the parameter being associated with operation of an electrosurgical probe having a particular probe design;
determining whether the value of the parameter is within a range of values that has been predetermined for the particular probe design to indicate that the probe is treating tissue in a desired manner; and
delivering power to the probe according to an algorithm based upon a determination that the value of the parameter is outside the range of values, the algorithm comprising a pulsed profile including portions of a low power alternating waveform and portions of a high power alternating waveform, the high power alternating waveform being sufficient to treat the tissue in the desired manner.
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Accused Products
Abstract
A method and apparatus include determining a value of a parameter associated with operation of an electrosurgical probe having a particular probe design, and determining whether the value of the parameter is within a range of values that has been predetermined for the particular probe design to indicate that the probe is treating tissue in a desired manner. Power is delivered to the probe according to an algorithm based upon a determination that the value of the parameter is outside the range of values The algorithm delivers power in a pulsed profile including portions of low power and portions of high power. In one embodiment, the tissue treatment is ablation, the parameter is impedance, and the method limits tissue necrosis to less than 200 microns. In another embodiment, the tissue treatment is shrinkage, the parameter is temperature, and the method limits power delivery when the probe is not shrinking tissue.
798 Citations
29 Claims
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1. A method comprising:
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determining a value of a parameter, the parameter being associated with operation of an electrosurgical probe having a particular probe design; determining whether the value of the parameter is within a range of values that has been predetermined for the particular probe design to indicate that the probe is treating tissue in a desired manner; and delivering power to the probe according to an algorithm based upon a determination that the value of the parameter is outside the range of values, the algorithm comprising a pulsed profile including portions of a low power alternating waveform and portions of a high power alternating waveform, the high power alternating waveform being sufficient to treat the tissue in the desired manner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An apparatus comprising one or more tangible computer readable media having instructions stored thereon and configured to result in at least the following:
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determining a value of a parameter associated with operation of an electrosurgical probe having a particular probe design; determining whether the value of the parameter is within a range of values that has been predetermined for the particular probe design to indicate that the probe is treating tissue in a desired manner; and delivering power to the probe according to an algorithm based upon a determination that the value of the parameter is outside the range of values, the algorithm comprising a pulsed profile including portions of a low power alternating waveform and portions of a high power alternating waveform, the high power alternating waveform being sufficient to treat the tissue in the desired manner. - View Dependent Claims (25, 26, 27, 28)
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29. A method comprising:
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determining that a value of a parameter associated with operation of an electrosurgical probe is within a predetermined range of values; delivering, in response to the determination that the value of the parameter is within the predetermined range of values, a high power alternating waveform to the electrosurgical probe; determining that a value of the parameter associated with operation of the electrosurgical probe is outside the predetermined range of values; and delivering, in response to the determination that the value of the parameter is outside the predetermined range of values, a pulsed profile alternating between the high power alternating waveform and a low power alternating waveform to the electrosurgical probe.
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Specification