| Medical Electronics |
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| Electromagnetic effects on the biological tissue surrounding a transcutaneous transformer for an artificial anal sphincter system |
| Peng Zan, Bang-hua Yang, Yong Shao, Guo-zheng Yan, Hua Liu |
| Shanghai Key Laboratory of Power Station Automation Technology, College of Mechatronics Engineering and Automation, Shanghai University, Shanghai 200072, China, School of Electronics, Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
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Abstract This paper reports on the electromagnetic effects on the biological tissue surrounding a transcutaneous transformer for an artificial anal sphincter. The coupling coils and human tissues, including the skin, fat, muscle, liver, and blood, were considered. Specific absorption rate (SAR) and current density were analyzed by a finite-length solenoid model. First, 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 thickness. Then relations between SAR, current density, and five types of tissues under each frequency were deduced. As 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.
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Received: 22 February 2010
Published: 09 December 2010
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