Finite Element Analysis on Effect of Power of Electrosurgical Unit on Lesions of Muscular Tissue
Tribology Research Institute, Key Laboratory of Advanced Technologies of Materials, Ministry of Education, Southwest Jiaotong University, Chengdu 610031,China
Abstract：As an electrosurgery energy device, electrosurgical unit has been widely used in clinical practice to cut tissues. In this paper, based on Pennes thermodynamic equation, a thermodynamics lesion model of in vitro porcine muscle tissue in cut mode was first established using ANSYS Workbench. And then the lesions of muscular tissue at different powers of electrosurgical unit were analyzed, aiming to reveal the effect of electrosurgical unit power on tissue lesions. Results showed that with the power of electrosurgical unit increasing, the area and extent of tissue lesion changed nonlinearly. As the power was gradually increased from 20 W to 60 W, only local variation instead of significant increase occurred to lesion area. And the highest temperature in tissues increased from 214 .4℃ to 301.7℃. As the power was increased from 60 W to 70 W, the lesion area increased significantly, and the highest temperature in tissues increased rapidly from 301.7℃ to 436.6℃. Obviously, the extent of tissue lesion aggravated remarkably. In addition, with the gap between the tissue and electrode decreasing, the extent of tissue lesion was aggravated. The temperature in tissues increased sharply about ±1.8 mm away from the center of electrode along the cutting direction, while the temperature increased sharply about ±1.2 mm away from the center of electrode perpendicular to the cutting direction. The results would help to reveal the relationship between the power of electrosurgical unit and tissue lesions in cut mode, and then provide valuable insights into the clinical application of electrosurgical unit.
茹磊磊 郑靖* 栗云龙 周仲荣. 电刀功率对肌肉组织损伤影响的有限元分析[J]. 中国生物医学工程学报, 2016, 35(2): 169-176.
Ru Leilei Zheng Jing*Li Yunlong Zhou Zhongrong. Finite Element Analysis on Effect of Power of Electrosurgical Unit on Lesions of Muscular Tissue. journal1, 2016, 35(2): 169-176.
