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Artificial Anal Sphincter with Sensor Feedback Powered by transcutaneous energy transmission

Journal of Shanghai Jiaotong university(Science) 2008年第5期13卷 600-604页

作者：刘华颜国正昝鹏赵玉娟罗念亭 Department of Instrument Science and Engineering Shanghai Jiaotong University

This artificial anal sphincter (AAS) is used to help patients who are in severe incontinence. It consists of two parts. The first part is taken outside with patients. The second is implanted in the bodies to provide independent evacuation for patients. It is powered through transcutaneous energy transmission by the first part. There are two sensors in the second part. One sensor measures the pressure in the cuff-clamp around the recta. The other measures the pressure of the recta. As soon as the pressure measured by the later reaches the threshold, a signal is sent out to patients through wireless communication to alarm patients preparing defecation. Patients can give a start signal to begin defecating after they are ready. And they can also give a signal to stop defecating like a healthy person. With the aids of the novel medical device, patients can defecate as a healthy person. The first generation of this AAS is presented.

关键词： artificial anal sphincter(AAS) transcutaneous energy transmission wireless communication pressure sensor feedback

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Electromagnetic effects on the biological tissue surrounding a transcutaneous transformer for an artificial anal sphincter system

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2010年第12期11卷 931-936页

作者： Peng ZAN Bang-hua YANG Yong SHAO Guo-zheng YAN Hua LIU Shanghai Key Laboratory of Power Station Automation Technology College of Meehatronics Engineering and Automation Shanghai University Shanghai 200072 China School of Electronics Information and Electrical Engineering Shanghai Jiao Tong University Shanghai 200240 China

This paper reports on the electromagnetic effects on the biological tissue surrounding a transcutaneous transformer for an artificial anal *** coupling coils and human tissues,including the skin,fat,muscle,liver,and blood,were *** absorption rate (SAR) and current density were analyzed by a finite-length solenoid ***,SAR and current density as a function of frequency (10–107 Hz) for an emission current of 1.5 A were calculated under different tissue *** relations between SAR,current density,and five types of tissues under each frequency were *** a result,both the SAR and current density were below the basic restrictions of the International Commission on Non-Ionizing Radiation Protection (ICNIRP).The results show that the analysis of these data is very important for developing the artificial anal sphincter system.

关键词： Artificial anal sphincter transcutaneous energy transmission Current density Specific absorption rate

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