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US 8,998,893 B2Granted
Catheter systems for cardiac arrhythmia ablation
OwnerBoaz Avitallinventor
Life of this patent
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Abstract
A plurality of catheter-based ablation apparatus embodiments are provided that address several areas of atrial target tissue and which feature firm and consistent ablation element to tissue contact enabling the creation of effective continuous lesions.
Claims16
A device for ablating tissue in a body organ chamber, including heart chambers, comprising:
- (a) a guide body or sheath having a deflectable distal end portion;
- (b) an independent axially adjustable guidewire extendable from said distal end portion of said guide body to selectively form a guidewire loop that is controllable to create forced contact with organ chamber tissue in a variety of positions and anatomical locations;
- (c) an ablation section in said guide body including an inflatable expanding device, able to travel over said guidewire;
- (d) wherein said inflatable expanding device is in the form of a balloon and includes a plurality of ribbon-type outer conductive ablation elements separate from and disposed about the external periphery of said inflatable expanding device in a manner such that they overlap when the inflatable expanding device is deflated or collapsed and wherein said ablation elements separate from contacting each other when said inflatable expanding device is inflated.
1 more element
Dependencies are inferred from the claim text.