Título:
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Towards addressable wireless microstimulators based on electronic rectification of epidermically applied currents
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Autor/a:
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Becerra-Fajardo, Laura; Ivorra Cano, Antoni, 1974-
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Abstract:
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Electrical stimulation has been explored to restore/nthe capabilities of the nervous system in paralysis patients. This/narea of research and of clinical practice, known as Functional/nElectrical Stimulation, would greatly benefit from further/nminiaturization of implantable stimulators. To that end, we/nrecently proposed and demonstrated an innovative electrical/nstimulation method in which implanted microstimulators/noperate as rectifiers of bursts of innocuous high frequency/ncurrent supplied by skin electrodes, thus generating low/nfrequency currents capable of stimulating excitable tissues. A/ndiode could suffice in some applications but, in order to broaden/nthe method’s clinical applicability, we envision rectifiers with/nadvanced capabilities such as current control and/naddressability. We plan flexible thread-like implants (diameters/n< 300 μm) containing ASICs. As an intermediate stage, we are/ndeveloping macroscopic implants (diameters 2 mm) made of/noff-the-shelf components. Here we present a circuit which/nresponds to commands modulated within the high frequency/nbursts and which is able to deliver charge-balanced currents./nWe show that a number of these circuits can perform/nindependent stimulation of segments of an anesthetized/nearthworm following commands from a computer. |
Abstract:
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AI’s research is supported by a Ramón y Cajal fellowship from the Spanish government and a Marie Curie grant (IRG 256376) from the European Commission. LBF’s research is supported by a scholarship from the UPF. |
Derechos:
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© 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works./nThe final published article can be found at http://dx.doi.org/10.1109/EMBC.2014.6944494 |
Tipo de documento:
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Objeto de conferencia Artículo - Versión aceptada |
Editor:
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Institute of Electrical and Electronics Engineers (IEEE)
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