|本期目录/Table of Contents|

[1]陈留晓,陈通,涂良勇,等.射频组织焊接散热电极的创新结构设计与实验验证*[J].生物医学工程研究,2022,03:301-307.
 CHEN Liuxiao,CHEN Tong,TU Liangyong,et al.Innovative design and experimental verification of heat dissipation electrode in radio-frequency induced intestinal tissue fusion[J].Journal of Biomedical Engineering Research,2022,03:301-307.
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射频组织焊接散热电极的创新结构设计与实验验证*(PDF)

《生物医学工程研究》[ISSN:1006-6977/CN:61-1281/TN]

期数:
2022年03期
页码:
301-307
栏目:
出版日期:
2022-09-25

文章信息/Info

Title:
Innovative design and experimental verification of heat dissipation electrode in radio-frequency induced intestinal tissue fusion
文章编号:
1672-6278 (2022)03-0301-07
作者:
陈留晓陈通涂良勇涂明玉毛琳宋成利△
上海理工大学 健康科学与工程学院 教育部微创医疗器械工程研究中心,上海 200093
Author(s):
CHEN LiuxiaoCHEN Tong TU Liangyong TU Mingyu MAO Lin SONG Chengli
Shanghai Institute for Minimally Invasive Therapy, School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
关键词:
射频能量消化道重建热损伤分布多物理场建模对流换热电极结构设计
Keywords:
Radio-frequency energy Digestive tract reconstruction Thermal damage distribution Multiphysics modeling Convection heat transfer Electrode structure design
分类号:
R318,R197.39
DOI:
10.19529/j.cnki.1672-6278.2022.03.12
文献标识码:
A
摘要:
在射频组织焊接中,热损伤过大会导致组织坏死,影响术后恢复,为减少热损伤,需要有效地降低热扩散。本研究设计了一种采用空气强制对流方式散热的新型组织焊接电极,建立了有限元模型并对其散热性能进行分析,同时采用猪小肠进行离体组织焊接实验,验证散热电极的可行性和有效性。有限元分析结果显示,普通平板电极焊接温度为91.3 ℃,热损伤范围1.40 mm,散热电极温度61 ℃,热损伤范围0.77 mm;离体实验结果显示,平板电极温度为88.5 ℃,热损伤范围1.27~2.84 mm;散热电极温度为64.9 ℃,热损伤范围0.88~1.76 mm。仿真与离体实验结果均表明,在射频组织焊接电极处增加散热装置,可以有效降低焊接温度,减少组织热损伤。因此,该散热装置对促进电极散热,减少热量在组织中的聚集具有显著作用。本研究结果为射频组织焊接电极结构的优化与设计提供了新的思路和方法。
Abstract:
In radio-frequency(RF) induced tissue fusion, excessive heat damage will lead to tissue necrosis and affect postoperative recovery. It is necessary to effectively reduce thermal diffusion to reduce thermal damage. We designed a new type of tissue fusion electrode for heat dissipation by air forced convection. The corresponding finite element analysis model was established and in vitro tissue welding experiment was carried out with pig intestine to verify the feasibility and effectiveness of heat dissipation electrode. The results of finite element analysis showed that the fusion temperature of the plate electrode was 91.3 ℃, and the thermal damage range was 1.40 mm; the heat dissipation electrode temperature was 61 ℃, and the thermal damage range was 0.77 mm. In vitro experiment results showed that the temperature of the plate electrode was 88.5 ℃, and the thermal damage range was 1.27~2.84 mm. The heat dissipation electrode temperature was 64.9 ℃, and the thermal damage range was 0.88~1.76 mm. The finite element analysis and in vitro experiments showed that the heat dissipation electrode could effectively reduce the fusion temperature and tissue thermal damage. Therefore, the heat dissipation device plays a significant role in promoting the cooling capacity of the heat dissipation electrode and reducing heat accumulation in tissues. It provides a new idea and method for the electrode structure optimization and design of RF tissue fusion.

参考文献/References

备注/Memo

备注/Memo:
(收稿日期:2022-01-07)国家自然科学基金项目(51735003);上海市科研计划项目(18441900200);上海理工大学医工交叉项目(2020)。△通信作者Email:csong@usst.edu.cn
更新日期/Last Update: 2022-11-08