Wireless Power Transfer Techniques for Implantable Medical Devices: A Review

被引:201
作者
Khan, Sadeque Reza [1 ]
Pavuluri, Sumanth Kumar [1 ]
Cummins, Gerard [2 ]
Desmulliez, Marc P. Y. [1 ]
机构
[1] Heriot Watt Univ, Sch Engn & Phys Sci, Inst Sensors Signals & Syst, Edinburgh EH14 4AS, Midlothian, Scotland
[2] Univ Birmingham, Sch Engn, Birmingham B15 2TT, W Midlands, England
基金
英国工程与自然科学研究理事会;
关键词
acoustic coupling; capacitive coupling; electromagnetic; implantable medical device; optical power transfer; tissue safety; wireless power transfer; CONTACTLESS BATTERY CHARGER; PRINTED SPIRAL COILS; TRANSFER SYSTEM; BIOLOGICAL TISSUES; CAPSULE ENDOSCOPY; ENERGY-TRANSFER; DIELECTRIC-PROPERTIES; TRANSMISSION-SYSTEMS; BIOMEDICAL DEVICES; OPTIMAL-DESIGN;
D O I
10.3390/s20123487
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Wireless power transfer (WPT) systems have become increasingly suitable solutions for the electrical powering of advanced multifunctional micro-electronic devices such as those found in current biomedical implants. The design and implementation of high power transfer efficiency WPT systems are, however, challenging. The size of the WPT system, the separation distance between the outside environment and location of the implanted medical device inside the body, the operating frequency and tissue safety due to power dissipation are key parameters to consider in the design of WPT systems. This article provides a systematic review of the wide range of WPT systems that have been investigated over the last two decades to improve overall system performance. The various strategies implemented to transfer wireless power in implantable medical devices (IMDs) were reviewed, which includes capacitive coupling, inductive coupling, magnetic resonance coupling and, more recently, acoustic and optical powering methods. The strengths and limitations of all these techniques are benchmarked against each other and particular emphasis is placed on comparing the implanted receiver size, the WPT distance, power transfer efficiency and tissue safety presented by the resulting systems. Necessary improvements and trends of each WPT techniques are also indicated per specific IMD.
引用
收藏
页码:1 / 58
页数:58
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