用于植入式医疗设备的无线电力传输系统中印刷螺旋线圈的设计与仿真

Design and simulation of printed spiral coil used in wireless power transmission systems for implant medical devices.

作者信息

Wu Wei, Fang Qiang

机构信息

Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, Jiangsu 215163, PR China.

出版信息

Annu Int Conf IEEE Eng Med Biol Soc. 2011;2011:4018-21. doi: 10.1109/IEMBS.2011.6090998.

DOI:10.1109/IEMBS.2011.6090998

PMID:22255221

Abstract

Printed Spiral Coil (PSC) is a coil antenna for near-field wireless power transmission to the next generation implant medical devices. PSC for implant medical device should be power efficient and low electromagnetic radiation to human tissues. We utilized a physical model of printed spiral coil and applied our algorithm to design PSC operating at 13.56 MHz. Numerical and electromagnetic simulation of power transfer efficiency of PSC in air medium is 77.5% and 71.1%, respectively. The simulation results show that the printed spiral coil which is optimized for air will keep 15.2% power transfer efficiency in human subcutaneous tissues. In addition, the Specific Absorption Ratio (SAR) for this coil antenna in subcutaneous at 13.56 MHz is below 1.6 W/Kg, which suggests this coil is implantable safe based on IEEE C95.1 safety guideline.

摘要

印刷螺旋线圈（PSC）是一种用于向新一代植入式医疗设备进行近场无线电力传输的线圈天线。用于植入式医疗设备的PSC应具有高能效且对人体组织的电磁辐射低的特点。我们利用印刷螺旋线圈的物理模型并应用我们的算法来设计工作在13.56兆赫兹的PSC。在空气介质中PSC功率传输效率的数值模拟和电磁模拟分别为77.5%和71.1%。模拟结果表明，针对空气优化的印刷螺旋线圈在人体皮下组织中将保持15.2%的功率传输效率。此外，该线圈天线在13.56兆赫兹皮下组织中的比吸收率（SAR）低于1.6瓦/千克，这表明根据IEEE C95.1安全指南，该线圈可安全植入。