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http://dx.doi.org/10.9718/JBER.2017.38.6.285

Development of Numerical Model of Electrode for Radiofrequency Catheter Ablation Considering Saline Irrigation and Temperature-controlled Radiofrequency System  

Ahn, Jin-Woo (Medical Device Development Center, Osong Medical Innovation Foundation)
Kim, Young-Jin (Medical Device Development Center, Osong Medical Innovation Foundation)
Lee, Seung-A (Medical Device Development Center, Osong Medical Innovation Foundation)
Jung, Ha-Chul (Medical Device Development Center, Osong Medical Innovation Foundation)
Kim, Kyung-Ah (Dept. of Biomedical Engineering, School of Medicine, Chungbuk National University)
Cha, Eun-Jong (Dept. of Biomedical Engineering, School of Medicine, Chungbuk National University)
Moon, Jin-Hee (Medical Device Development Center, Osong Medical Innovation Foundation)
Publication Information
Journal of Biomedical Engineering Research / v.38, no.6, 2017 , pp. 285-290 More about this Journal
Abstract
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 $100^{\circ}C$. 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.
Keywords
Radiofrequency catheter ablation; Numerical analysis; Arrhythmia; Electrode of catheter; Saline irrigation; Thrombus;
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