Radio frequency pulmonary vein isolation

Details Radio frequency pulmonary vein isolation Radio frequency pulmonary vein isolation

A - Human Necessities

61

B

A61B 18/12 (2006.01) A61B 18/14 (2006.01)

Patent

CA 2418504

A catheter introduction apparatus provides a radially expandable helical coil as a radiofrequency emitter. In one application the emitter is introduced percutaneously, and transseptally advanced to the ostium of a pulmonary vein. The emitter is radially expanded, which can be accomplished by inflating an anchoring balloon about which the emitter is wrapped, in order to cause the emitter to make circumferential contact with the inner wall of the pulmonary vein. The coil is energized by a radiofrequency generator, and a circumferential ablation lesion is produced in the myocardial sleeve of the pulmonary vein, which effectively blocks electrical propagation between the pulmonary vein and the left atrium.

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