Ablation system with feedback
AssigneeMedtronic Ablation Frontiers LLC
InventorsRandell L. Werneth, Marshall L. Sherman, J. Christopher Flaherty
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Abstract
Devices, systems and methods are disclosed for the ablation of tissue and treatment of cardiac arrhythmia. An ablation system includes an ablation catheter that has an array of ablation elements and a location element, an esophageal probe also including a location element, and an interface unit that provides energy to the ablation catheter. The distance between the location elements, determined by calculating means of the system, can be used by the system to set or modify one or more system parameters.
Claims42
A tissue ablation system comprising:
- an esophageal probe having a flexible shaft with a proximal end, a distal end, an exterior wall, and a first location element;
- a first catheter including at least one ablation element for delivering energy to cardiac tissue, the first catheter having a flexible shaft with a proximal end, a distal end, an exterior wall, and a second location element;
- and
- an interface unit for delivering energy to the first catheter, the interface unit programmed to:
- calculate a distance between the first and second location elements;
- and
- determine a temperature threshold for the ablation element based at least in part on the calculated distance.
An ablation system comprising:
- a first catheter having at least one ablation element for delivering energy to cardiac tissue;
- a second catheter having a sensor and a location element;
- and
- an interface unit for providing energy to the at least one ablation element, the interface unit operable to determine the distance between the location element and the at least one ablation element, and define a temperature threshold for the ablation element based at least in part on the determined distance.
Dependencies are inferred from the claim text.