Microwave Ablation System With Dielectric Temperature Probe
First Claim
1. An ablation system, comprising:
- a generator adapted to selectively provide ablation energy to an ablation probe;
an ablation probe operably coupled to the generator and adapted to receive the ablation energy from the generator and to deliver the ablation energy to tissue;
a controller operatively coupled to the generator, including;
a processor;
a memory operatively coupled to the processor;
a tissue sensor probe operatively coupled to the controller and having a distal end and a proximal end, including;
a dielectric sensor disposed at a distal end of the tissue sensor probe and configured to provide a dielectric sensor signal corresponding to a dielectric property of tissue;
a temperature sensor disposed at a distal end of the tissue sensor probe and configured to provide a temperature sensor signal corresponding to a temperature of tissue;
wherein a dielectric sensor circuit is operatively coupled to the processor and is adapted to receive the dielectric sensor signal from the tissue sensor probe; and
a temperature sensor circuit is operatively coupled to the processor and is adapted to receive the temperature sensor signal from a tissue sensor probe.
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Accused Products
Abstract
An electromagnetic surgical ablation system having a generator adapted to selectively provide surgical ablation energy to an ablation probe, and methods of operating same, are disclosed. The system includes a controller operatively coupled to the generator, and a tissue sensor probe operatively coupled to the controller. The tissue sensor provides a tissue temperature and at least one tissue dielectric property to the controller. During an electromagnetic tissue ablation procedure, the controller monitors tissue temperature and the at least one tissue dielectric property to determine tissue status, and to activate and deactivate the generator in accordance therewith.
150 Citations
20 Claims
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1. An ablation system, comprising:
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a generator adapted to selectively provide ablation energy to an ablation probe; an ablation probe operably coupled to the generator and adapted to receive the ablation energy from the generator and to deliver the ablation energy to tissue; a controller operatively coupled to the generator, including; a processor; a memory operatively coupled to the processor; a tissue sensor probe operatively coupled to the controller and having a distal end and a proximal end, including; a dielectric sensor disposed at a distal end of the tissue sensor probe and configured to provide a dielectric sensor signal corresponding to a dielectric property of tissue; a temperature sensor disposed at a distal end of the tissue sensor probe and configured to provide a temperature sensor signal corresponding to a temperature of tissue; wherein a dielectric sensor circuit is operatively coupled to the processor and is adapted to receive the dielectric sensor signal from the tissue sensor probe; and a temperature sensor circuit is operatively coupled to the processor and is adapted to receive the temperature sensor signal from a tissue sensor probe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of operating an ablation system, comprising the steps of:
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activating a source of ablation energy; sensing a tissue temperature; deactivating the source of electromagnetic surgical energy upon expiration of a predetermined period of time; sensing at least one tissue dielectric property; determining a tissue status from at least one of the sensed tissue temperature and the at least one sensed tissue dielectric property; and activating the source of ablation energy in response to a determined tissue status indicative of incomplete tissue ablation. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A tissue sensor probe for use during an ablation procedure, comprising:
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an elongated cylindrical shaft having a distal end and a proximal end, a dielectric sensor disposed at a distal end of the shaft and configured to provide a dielectric sensor signal corresponding to a dielectric property of tissue; and a temperature sensor disposed at a distal end of the shaft and configured to provide a temperature sensor signal corresponding to a temperature of tissue. - View Dependent Claims (17, 18, 19, 20)
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Specification