发明名称 |
RF ABLATION SYSTEM AND METHOD HAVING AUTOMATIC TEMPERATURE CONTROL |
摘要 |
A plurality of electrodes are positioned at the distal end of a catheter such that the electrodes may be positioned proximal biological tissue. A select number of the electrodes have a temperature sensing device associated with them for providing a temperature signal indicative of the temperature at the interface between the electrode and the tissue. A generator operates under the control of a processor to apply power to each of the electrodes. The power has an associated phase angle and, within a time duration, a plurality of alternating on periods and off periods, one set of adjacent on and off periods defining a duty cycle. The processor is programmed to determine the temperature at the electrode/tissue interface based on the temperature signals, compare the temperature to a target temperature and to adjust the power to the electrode accordingly. Such adjustments may comprise an increase or decrease in the duty cycle, a setting of the duty cycle to zero followed by an incremental increase in the duty cycle or a power interrupt. |
申请公布号 |
WO0247565(A3) |
申请公布日期 |
2002.08.22 |
申请号 |
WO2001US48220 |
申请日期 |
2001.12.11 |
申请人 |
CARDIAC PACEMAKERS, INC.;SHERMAN, MARSHALL, L.;LOCKWOOD, KATHRYN, E.;CASTELLANO, THOMAS, M. |
发明人 |
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分类号 |
A61B18/12;A61B18/14 |
主分类号 |
A61B18/12 |
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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