Systems and methods for reduction of atrial fibrillation

摘要

Embodiments of the present invention are directed to ablation catheter systems configured, for example, to ablate tissue adjacent an ostium of the pulmonary vein in a left atria of a heart. In one embodiment, an ablation catheter system includes a handle and a catheter coupled to the handle defining a lumen extending through a length of the catheter, the catheter including a distal end thereof. The ablation catheter system may also include an electrode coupled to the handle with lines extending through the lumen of the catheter, the electrode being configured to be constrained adjacent the distal end of the catheter and configured to be deployed from the distal end of the catheter to an expanded configuration.

主权项

1. An ablation system, comprising:
a delivery member; an RF energy source operatively coupled with the delivery member; and an electrode having an electrode frame coupled to the RF energy source and configured to be positioned adjacent a distal end of the delivery member, the electrode frame configured to receive RF energy for heating tissue, the electrode frame having multiple struts defining a multi-cellular structure such that each cell includes at least one common strut of an adjacent cell, the electrode frame configured to move between a constricted narrow configuration and an expanded configuration.