Networks of injectable microdevices powered and digitally linked by volume conduction for neuroprosthetics: a proof-of-concept

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• dc.contributor.author Becerra Fajardo, Laura
• dc.contributor.author Minguillon, Jesus
• dc.contributor.author Comerma-Montells, Albert
• dc.contributor.author Ivorra Cano, Antoni, 1974-
• dc.date.accessioned 2023-06-02T13:07:05Z
• dc.date.issued 2023
• dc.description Comunicació presentada a 11th International IEEE/EMBS Conference on Neural Engineering (NER 2023), celebrada del 24 al 27 d'abril de 2023 a Baltimore, Estats Units.
• dc.description.abstract Wireless power transfer (WPT) methods such as inductive coupling and ultrasounds are used as an alternative to electrochemical batteries to energize active implantable medical devices. However, existing WPT methods require the use of bulky components (e.g., coils) that hinder miniaturization. To avoid this, we proposed the use of volume conduction of high frequency (HF) current bursts to power and bidirectionally communicate with threadlike implants that can be used for electrical stimulation and sensing (e.g., electromyography acquisition). Here, we in vitro demonstrate that several wireless devices can be powered and digitally linked by volume conduction. Eleven devices were randomly placed in a saline medium and were enclosed by two electrodes connected to an external system. The system interrogated the devices, and the waveforms obtained by the external system's demodulator were digitally processed to decode the information sent by the devices through the same HF current bursts. Data was successfully decoded from the devices, independently of the power that each single device obtained. The WPT efficiency of volume conduction boosts when a massive number of devices are powered with a single external system, creating a network of microdevices for neuroprosthetics. This will allow to accomplish closed-loop control for neural interphases using highly miniaturized injectable devices.
• dc.description.sponsorship This work has received funding from the European Research Council (ERC) - European Union’s Horizon 2020 research and innovation programme under grant agreement No. 724244 (eAXON) and from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 779982 (Project EXTEND - Bidirectional Hyper-Connected Neural System). AI gratefully acknowledges the financial support by ICREA under the ICREA Academia programme.
• dc.format.mimetype application/pdf
• dc.identifier.citation Becerra-Fajardo L, Minguillon J, Comerma A, Ivorra A. Networks of injectable microdevices powered and digitally linked by volume conduction for neuroprosthetics: a proof-of-concept. In: 11th International IEEE/EMBS Conference on Neural Engineering (NER 2023); 2023 Apr 24-27; Baltimore, United States. [Piscataway]: IEEE; 2023. [4 p.]. DOI: 10.1109/NER52421.2023.10123743
• dc.identifier.doi http://dx.doi.org/10.1109/NER52421.2023.10123743
• dc.identifier.isbn 978-1-6654-6293-8
• dc.identifier.issn 1948-3546
• dc.identifier.uri http://hdl.handle.net/10230/57035
• dc.language.iso eng
• dc.publisher Institute of Electrical and Electronics Engineers (IEEE)
• dc.relation.ispartof 11th International IEEE/EMBS Conference on Neural Engineering (NER 2023); 2023 Apr 24-27; Baltimore, United States. [Piscataway]: IEEE; 2023. [4 p.].
• dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/724244
• dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/779982
• dc.rights © 2023 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. http://dx.doi.org/10.1109/NER52421.2023.10123743
• dc.rights.accessRights info:eu-repo/semantics/openAccess
• dc.subject.keyword wireless power transfer
• dc.subject.keyword volume conduction
• dc.subject.keyword AIMDs
• dc.subject.keyword electrical stimulation
• dc.subject.keyword neuroprosthetics
• dc.subject.keyword closed-loop control
• dc.title Networks of injectable microdevices powered and digitally linked by volume conduction for neuroprosthetics: a proof-of-concept
• dc.type info:eu-repo/semantics/conferenceObject
• dc.type.version info:eu-repo/semantics/acceptedVersion