摘要 |
An ablation catheter (22) has improved fluid distribution structures. An ablation section at a distal end (12) of the catheter (22) is designed to provide a more uniform fluid flow emanating from the catheter (22). By creating a uniform fluid flow, a more uniform tissue lesion results and the possibility of charring the tissue is reduced. A combination of mesh material (142) layers, porous materials (354), and dispersion channels or openings (346) are used to achieve the uniform flow. The amount of fluid used as a virtual electrode to ablate the tissue is greatly reduced with the present invention. Further, the catheter (22) may be used to create a single, uniform linear lesion by successive application of energy to adjacent portions of the ablation section, thus reducing the power required to create the desired lesion.
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申请人 |
ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.;CAO, HONG;THAO, CHOU;BELHE, KEDAR, RAVINDRA;PAUL, SAURAV;STANGENES, TODD |
发明人 |
CAO, HONG;THAO, CHOU;BELHE, KEDAR, RAVINDRA;PAUL, SAURAV;STANGENES, TODD |