System and Method for Monitoring Ablation Size
First Claim
1. A system for monitoring ablation size, comprising:
- a power source;
a microwave antenna configured to deliver microwave energy from the power source to tissue to form an ablation zone; and
a plurality of spaced-apart electrodes operably disposed along a length of the microwave antenna, the electrodes in electrical communication with one another, each of the electrodes having a threshold impedance associated therewith corresponding to the radius of the ablation zone.
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Abstract
A system for monitoring ablation size is provided. The system includes a power source including a microprocessor for executing one or more control algorithms. A microwave antenna is configured to deliver microwave energy from the power source to tissue to form an ablation zone. A plurality of spaced-apart electrodes is operably disposed along a length of the microwave antenna. The plurality of spaced-apart electrodes is disposed in electrical communication with one another and each of the plurality of spaced-apart electrodes has a threshold impedance associated therewith corresponding to the radius of the ablation zone.
68 Citations
19 Claims
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1. A system for monitoring ablation size, comprising:
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a power source; a microwave antenna configured to deliver microwave energy from the power source to tissue to form an ablation zone; and a plurality of spaced-apart electrodes operably disposed along a length of the microwave antenna, the electrodes in electrical communication with one another, each of the electrodes having a threshold impedance associated therewith corresponding to the radius of the ablation zone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for monitoring tissue undergoing ablation, the method comprising:
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transmitting microwave energy from a power source to a microwave antenna to form a tissue ablation zone; monitoring impedance of at least one electrode along the microwave antenna as the tissue ablation zone forms; triggering a detection signal when a predetermined electrode impedance is reached at the at least one electrode along the microwave antenna; and adjusting the amount of microwave energy from the power source to the microwave antenna. - View Dependent Claims (14)
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15. A microwave antenna adapted to connect to a power source configured for performing an ablation procedure, comprising:
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a radiating section configured to deliver microwave energy from a power source to tissue to form an ablation zone; and a plurality of spaced-apart electrodes operably disposed along a length of the microwave antenna, the plurality of spaced-apart electrodes disposed in electrical communication with one another, each of the plurality of spaced-apart electrodes having a threshold impedance associated therewith corresponding to the radius of the ablation zone. - View Dependent Claims (16, 17, 18, 19)
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Specification