), 王志武, 华芳芳, 姚盛健, 丁紫凡 上海交通大学 电子信息与电气工程学院, 上海 200240
收稿日期:2019-06-28出版日期:2020-08-28发布日期:2020-08-18通讯作者:颜国正E-mail:gzhyan@sjtu.edu.cn作者简介:周泽润(1990-),男,江苏省南京市人,博士生,从事人造肛门括约肌系统研究基金资助:上海市科技支撑项目(19441910600);上海市科技支撑项目(19441913800);国家自然科学基金项目(6167327181601631)Thermal Analysis and Control of Transcutaneous Energy Transfer Modulus of Puborectalis-Like Artificial Anal Sphincter
ZHOU Zerun, YAN Guozheng(), WANG Zhiwu, HUA Fangfang, YAO Shengjian, DING Zifan School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Received:2019-06-28Online:2020-08-28Published:2020-08-18Contact:YAN Guozheng E-mail:gzhyan@sjtu.edu.cn摘要/Abstract
摘要： 仿耻骨式人造肛门括约肌系统(PAAS)采用经皮能量传输(TET)为集成在充电模块内部的锂电池进行充电,使系统可长期稳定地在活体内工作.很多体内实验表明,无线充电过程中产生的大量热量对PAAS植入后充电模块附近活体组织的生物安全性不利,故需对无线充电过程进行合理规划.本文通过分析充电模块内部各组件的热传导关系,建立充电模块内部热阻模型,并利用体外实验对该模型进行验证及修正,经修正后的模型可以可靠地描述充电过程中活体组织温度变化情况.基于修正后的模型,本文制定了体内实验过程中单次最大连续无线充电时间,从而提高体内实验中PAAS的生物安全性,进而延长PAAS植入时间.
关键词: 人工肛门括约肌, 经皮能量传输, 热阻分析, 体内实验
Abstract: The puborectalis-like artificial anal sphincter system (PAAS) uses transuctaneous energy transmission (TET) to charge lithium batteries integrated within the charging module. Therefore, the system can work stably during in-vivo experiments for a long period of time. Massive in-vivo experiments show that the large amount of heat generated in the wireless charging process is unfavorable to the biological safety of the living tissue near the charging module after PAAS implantation, so it is necessary to reasonably plan the wireless charging process. In this paper, by analyzing the heat conduction relationship of the internal components of the charging module, the internal thermal resistance model of the charging module is established, verified, and modified by in-vitro experiments. The modified model can reliably describe the temperature changes of the living tissue during charging. Based on the modified model, this paper formulates the single maximum continuous wireless charging time during the in-vivo experiment, thus improving the biological safety of PAAS during in-vivo experiments, and then prolonging the implantation time of PAAS.
Key words: artificial anal sphincter, transcutaneous energy transfer, thermal resistance analysis, in-vivo experiment
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