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Open AccessArticle

Near Field Wireless Powering of Deep Medical Implants

1
Department of Industrial and Information Engineering and Economics, University of L’Aquila, 67100 L’Aquila, Italy
2
Department of Astronautics, Electrical and Energetics Engineering, Sapienza University of Rome, 00184 Rome, Italy
*
Author to whom correspondence should be addressed.
Energies 2019, 12(14), 2720; https://doi.org/10.3390/en12142720
Received: 25 June 2019 / Revised: 12 July 2019 / Accepted: 13 July 2019 / Published: 16 July 2019
(This article belongs to the Special Issue Intelligent Wireless Power Transfer System and Its Application)
This study deals with the inductive-based wireless power transfer (WPT) technology applied to power a deep implant with no fixed position. The usage of a large primary coil is here proposed in order to obtain a nearly uniform magnetic field inside the human body at intermediate frequencies (IFs). A simple configuration of the primary coil, derived by the Helmholtz theory, is proposed. Then, a detailed analysis is carried out to assess the compliance with electromagnetic field (EMF) safety standards. General guidelines on the design of primary and secondary coils are provided for powering or charging a deep implant of cylindrical shape with or without metal housing. Finally, three different WPT coil demonstrators have been fabricated and tested. The obtained results have demonstrated the validity of the proposed technology. View Full-Text
Keywords: active implantable medical device (AIMD), deep implant; electromagnetic field (EMF) safety; inductive coupling; numerical dosimetry; wireless power transfer (WPT) active implantable medical device (AIMD), deep implant; electromagnetic field (EMF) safety; inductive coupling; numerical dosimetry; wireless power transfer (WPT)
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MDPI and ACS Style

Campi, T.; Cruciani, S.; De Santis, V.; Maradei, F.; Feliziani, M. Near Field Wireless Powering of Deep Medical Implants. Energies 2019, 12, 2720.

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