IRRIGATED ABLATION CATHETER HAVING MAGNETIC TIP FOR MAGNETIC FIELD CONTROL AND GUIDANCE

摘要

Embodiments of the present invention provide an irrigated ablation electrode assembly (10) for use with an irrigated catheter device comprises at least one passageway (24) for a fluid with an outlet (22) disposed at an external surface of the electrode assembly (10); a permanent magnet (48); a shield separating the permanent magnet from the at least one passageway and from an exterior, the shield being substantially less oxidizable than the permanent magnet 48); and an electrode having an external electrode surface. A catheter guidance control and imaging system drives the permanent magnet to guide and control the catheter tip. In specific embodiments, the irrigation fluid flow paths through the electrode assembly are thermally insulated from the electrode and temperature sensor. The irrigation fluid is directed at target areas where coagulation is more likely to occur. One or more monitoring electrodes are provided for mapping or other monitoring functions.