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KMID : 1137820170380060285
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의공학회지
2017 Volume.38 No. 6 p.285 ~ p.290
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Development of Numerical Model of Electrode for Radiofrequency Catheter Ablation Considering Saline Irrigation and Temperature-controlled Radiofrequency System
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Ahn Jin-Woo
Kim Young-Jin
Lee Seung-A
Jung Ha-Chul
Kim Kyung-Ah
Cha Eun-Jong
Moon Jin-Hee
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Abstract
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Radiofrequency catheter ablation is the interventional therapy that be employed to eliminate cardiac tissue caused by arrhythmias. During radiofrequency catheter ablation, The thrombus can occur at electrode tip if the temperature of tissue and electrode is excess 100oC. To prevent this phenomenon, we investigated numerical model of electrode for radiofrequency catheter ablation considering saline irrigation and temperature-controlled radiofrequency system. The numerical model is based on coupled electric-thermal-flow problem and solved by COMSOL Multiphysics software. The results of the models show that the dimensions of the thermal lesion are increased if the flow rate of the saline irrigation and the set temperature are increased. The surface width characterized to determine the thermal lesion isn't need to measure in temperature-controlled radiofrequency system due to convective heat transfer by saline irrigation at tissue-electrode interface.
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KEYWORD
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Radiofrequency catheter ablation, Numerical analysis, Arrhythmia, Electrode of catheter, Saline irrigation, Thrombus
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