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US 8,162,933 B2Granted
Vibration sensitive ablation device and method
AssigneeMedtronic, Inc.
InventorsDavid E. Francischelli, Scott E. Jahns, James R. Keogh
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Abstract
An ablation apparatus including a maneuvering mechanism, a conductive element attached to the apparatus, a sensor attached to the apparatus and an output device in communication with the sensor is provided. The sensor senses vibration during the ablation procedure and sends a signal to the output device to reduce power to the conductive element.
Claims9
A method of ablating organic tissue, comprising:
- sensing an initial state of vibration of the organic tissue prior to ablating the organic tissue;
- positioning an electrode adjacent the organic tissue;
- supplying electrical power to the electrode to effect ablation of the organic tissue;
- sensing with a sensor positioned adjacent the electrode the vibration of the organic tissue being ablated wherein the vibration is self-generated in the organic tissue in response to the ablation and the self-generated vibration occurs during phase-transition but prior to boiling of water in the organic tissue;
- determining a difference in vibration between the initial state of vibration and the self-generated vibration;
- and
- reducing power to the electrode when the self-generated vibration reaches a given value.
4 more elements
Dependencies are inferred from the claim text.