Título:
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Powering implants by Galvanic coupling: a validated analytical model predicts powers above 1 mW in injectable implants
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Autor/a:
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Tudela-Pi, Marc; Becerra-Fajardo, Laura; Ivorra Cano, Antoni, 1974-
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Abstract:
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Comunicació presentada a: World Congress on Medical Physics and Biomedical Engineering 2018, celebrat del 3 al 8 de juny de 2018 a Praga, República Txeca. |
Abstract:
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While galvanic coupling for intrabody communications has been proposed lately by different research groups, its use for powering active im-plantable medical devices remains almost non-existent. Here it is presented a simple analytical model able to estimate the attainable power by galvanic cou-pling based on the delivery of high frequency (> 1MHz) electric fields applied as short bursts. The results obtained with the analytical model, which is in vitro validated in the present study, indicate that time-averaged powers above 1 mW can be readily obtained in very thin (diameter < 1 mm) and short (length < 20 mm) elongated implants when fields which comply with safety standards (SAR < 10 W/kg) are present in the tissues where the implants are located. Re-markably, the model indicates that, for a given SAR, the attainable power is in-dependent of the tissue conductivity and of the duration and repetition frequen-cy of the bursts. This study reveals that galvanic coupling is a safe option to power very thin active implants, avoiding bulky components such as coils and batteries. |
Abstract:
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This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 724244). |
Materia(s):
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-Galvanic coupling -Active implant -Wireless power transfer |
Derechos:
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© Springer The final publication is available at Springer via
http://dx.doi.org/10.1007/978-981-10-9023-3_5 |
Tipo de documento:
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Objeto de conferencia Artículo - Versión aceptada |
Editor:
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Springer
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