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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Project supported by the National Natural Science Foundation of China (No. 60975079), the Scientific Special Research Fund for Training Excellent Young Teachers in Higher Education Institutions of Shanghai (No. shu10052), the Innovation Fund of Shanghai University, and the ‘11th Five-Year Plan’ 211 Construction Project of Shanghai University, China
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Zan, P., Yang, Bh., Shao, Y. et al. Electromagnetic effects on the biological tissue surrounding a transcutaneous transformer for an artificial anal sphincter system. J. Zhejiang Univ. Sci. B 11, 931–936 (2010). https://doi.org/10.1631/jzus.B1000058
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DOI: https://doi.org/10.1631/jzus.B1000058