发明名称 |
ABLATION CATHETER ASSEMBLY WITH RADIALLY DECREASING HELIX AND METHOD OF USE |
摘要 |
A catheter assembly for treatment of cardiac arrhythmia. The catheter assembly includes a catheter body and an ablative energy source. The catheter body includes a proximal portion, an intermediate portion, and a distal portion. The intermediate portion extends from the proximal portion and defines a longitudinal axis. The distal portion extends from the intermediate portion and includes an ablation section and a tip. The ablation section forms a loop defining a diameter greater than an outer dimension of a pulmonary vein ostium. The tip extends distally from the ablation section and is configured to locate a pulmonary vein. Finally, the ablative energy source is associated with the ablation section. With this configuration, upon activation of the energy source, the ablation section ablates a desired lesion pattern. In one preferred embodiment, the ablation section forms a distally decreasing radius helix, whereas the tip includes a relatively linear leader section. With this one preferred configuration, the tip readily locates a pulmonary vein and guides the ablation section to a seated relationship about a pulmonary vein ostium (or extra-ostial). |
申请公布号 |
WO02089687(A1) |
申请公布日期 |
2002.11.14 |
申请号 |
WO2002US07661 |
申请日期 |
2002.03.12 |
申请人 |
MEDTRONIC, INC. |
发明人 |
STEWART, MARK, T.;SKARDA, JAMES, R.;FLICKINGER, WILLIAM, J.;FRANCISCHELLI, DAVID, E. |
分类号 |
A61B17/00;A61B18/14 |
主分类号 |
A61B17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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