Bipolar electrode probe for ablation monitoring
First Claim
1. An ablation system, comprising:
- a generator adapted to selectively provide ablative energy;
an ablation probe operably coupled to the generator and adapted to receive the ablative energy from the generator and to deliver the ablative energy to tissue;
a controller operatively coupled to the generator, the controller including;
a processor;
a memory operatively coupled to the processor;
a user interface operatively coupled to the processor; and
a sensor interface circuit operatively coupled to the processor and adapted to receive at least one impedance sensor signal from at least one tissue sensor probe, the at least one tissue sensor probe operatively coupled to the controller, and including;
a shaft having a proximal end and a distal end and adapted for insertion into tissue;
a first electrode and a second electrode disposed on an outer surface of the shaft and adapted to operably couple to the sensor interface circuit to sense tissue impedance; and
an identifier configured to transmit an electrical signal to the controller to identify the at least one tissue sensor probe as either a critical structure probe or a threshold probe.
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Accused Products
Abstract
An electromagnetic surgical ablation system having a generator adapted to selectively provide surgical ablative energy to an ablation probe, and methods of operating same, are disclosed. The system includes a controller operatively coupled to the generator, and at least one tissue sensor probe operatively coupled to the controller. The at least one tissue sensor provides a tissue impedance measurement to the controller. A sensor probe may be designated a threshold probe adapted to sense when tissue is sufficiently ablated, or, a critical structure probe adapted to protect an adjacent anatomical structure from undesired ablation. During an electromagnetic tissue ablation procedure, the controller monitors tissue impedance to determine tissue status, to activate an indicator associated therewith, and, additionally or alternatively, to activate and deactivate the generator accordingly.
250 Citations
15 Claims
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1. An ablation system, comprising:
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a generator adapted to selectively provide ablative energy; an ablation probe operably coupled to the generator and adapted to receive the ablative energy from the generator and to deliver the ablative energy to tissue; a controller operatively coupled to the generator, the controller including; a processor; a memory operatively coupled to the processor; a user interface operatively coupled to the processor; and a sensor interface circuit operatively coupled to the processor and adapted to receive at least one impedance sensor signal from at least one tissue sensor probe, the at least one tissue sensor probe operatively coupled to the controller, and including; a shaft having a proximal end and a distal end and adapted for insertion into tissue; a first electrode and a second electrode disposed on an outer surface of the shaft and adapted to operably couple to the sensor interface circuit to sense tissue impedance; and an identifier configured to transmit an electrical signal to the controller to identify the at least one tissue sensor probe as either a critical structure probe or a threshold probe. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An ablation system, comprising:
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a generator adapted to selectively provide energy; an ablation probe operably coupled to the generator and adapted to deliver energy to tissue; a plurality of tissue sensing probes, each of the plurality of tissue sensing probes including an identifier that identifies each of the plurality of tissue sensing probes as either a threshold probe or a critical structure probe; a controller configured to transmit an electrical signal to the identifier and determine whether each of the plurality of tissue sensing probes is a threshold probe or a critical structure probe and whether a sensed tissue impedance parameter from each of the plurality of tissue sensing probes exceeds a predetermined tissue impedance parameter threshold, wherein, for the critical structure probe, the predetermined tissue impedance parameter threshold is indicative of a pre-denaturation state of tissue and, for the threshold probe, the predetermined tissue impedance parameter threshold is indicative of denaturation of tissue. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification