Article (Scientific journals)
Near-field wireless power transfer to stent-based biomedical implants
Aldaoud, A.; Redouté, Jean-Michel; Ganesan, K. et al.
2018In IEEE journal of electromagnetics, RF and microwaves in medicine and biology, 2 (3), p. 193-200
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Keywords :
Wireless power transfer; Biological radiation effects; Biology; Circuit theory; Couplings; Energy transfer; Finite element method; Mathematical models; Microwave circuits; Muscle; Stents; Biomedical implants; Electromagnetics; Radio frequencies; Solid model; Inductive power transmission
Abstract :
[en] Safe wireless power transfer is an essential requirement for biomedical implants. Emerging technologies are becoming smaller, less invasive, and consume less power. Moreover, stent-based devices are being recognized as a minimally invasive alternative to traditional surgery. Hence, the idea of using the body of the stent as the power receiving element is becoming increasingly attractive. The objective of this paper is to analyze two near-field wireless power transfer methods to stent-based devices, viz., inductive and capacitive coupling. The methods used are lumped element modeling, ac circuit theory, finite-element analysis, experiments with excised bovine muscle tissue, and a live ovine vascular model. Capacitive coupling is proposed as an alternate method due to the transmitter design that can be worn anywhere on the body. It achieves power transfer efficiencies of 2.6% and 1% when placed at depths in muscle tissue of 15 mm and 30 mm, respectively. Safety requirements are also met. The capacitive link can accept an input power of 53 mW before exceeding the safe specific absorption rate limit of 1.6 W/kg averaged over 1 g of tissue. © 2018 IEEE.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Aldaoud, A.;  Department of Physics, University of Melbourne, Parkville, VIC 3010, Australia
Redouté, Jean-Michel  ;  Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes microélectroniques intégrés
Ganesan, K.;  Department of Physics, University of Melbourne, Parkville, VIC 3010, Australia
Rind, G. S.;  Vascular Bionics Laboratory, Departments of Medicine, Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, VIC 3205, Australia, Synchron Australia, Melbourne, VIC 3205, Australia
John, S. E.;  Vascular Bionics Laboratory, Departments of Medicine, Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, VIC 3205, Australia, Synchron Australia, Melbourne, VIC 3205, Australia
Ronayne, S. M.;  Vascular Bionics Laboratory, Departments of Medicine, Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, VIC 3205, Australia, Synchron Australia, Melbourne, VIC 3205, Australia
Opie, N. L.;  Vascular Bionics Laboratory, Departments of Medicine, Florey Institute of Neuroscience and Mental Health, University of Melbourne, Melbourne, VIC 3205, Australia, Synchron Australia, Melbourne, VIC 3205, Australia
Garrett, D. J.;  Department of Physics, University of Melbourne, Parkville, VIC 3010, Australia
Prawer, S.;  Department of Physics, University of Melbourne, Parkville, VIC 3010, Australia
Language :
English
Title :
Near-field wireless power transfer to stent-based biomedical implants
Publication date :
2018
Journal title :
IEEE journal of electromagnetics, RF and microwaves in medicine and biology
ISSN :
2469-7249
eISSN :
2469-7257
Publisher :
Institute of Electrical and Electronics Engineers Inc.
Volume :
2
Issue :
3
Pages :
193-200
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 06 September 2019

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