Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Development of Numerical Model of Electrode for Radiofrequency Catheter Ablation Considering Saline Irrigation and Temperature-controlled Radiofrequency System

온도 조절형 고주파 시스템 및 식염수 분사를 고려한 전극도자절제술용 전극의 수치 모델 개발

  • 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)
  • 안진우 (오송첨단의료산업진흥재단 첨단의료기기개발지원센터) ;
  • 김영진 (오송첨단의료산업진흥재단 첨단의료기기개발지원센터) ;
  • 이승아 (오송첨단의료산업진흥재단 첨단의료기기개발지원센터) ;
  • 정하철 (오송첨단의료산업진흥재단 첨단의료기기개발지원센터) ;
  • 김경아 (충북대학교 의과대학 의공학교실) ;
  • 차은종 (충북대학교 의과대학 의공학교실) ;
  • 문진희 (오송첨단의료산업진흥재단 첨단의료기기개발지원센터)
  • Received : 2017.09.22
  • Accepted : 2017.11.19
  • Published : 2017.12.31
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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

References

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