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Wireless Power Transfer and Telemetry for Implantable Bioelectronics

Cited 12 time in Web of Science Cited 0 time in Scopus
Issue Date
2021-09
Citation
Advanced healthcare materials, Vol.10 No.17, p. 2100614
Keywords
bioelectronics;implantable devices;radio frequency;telemetry;wireless power transfer
Abstract
Implantable bioelectronic devices are becoming useful and prospective solutions for various diseases owing to their ability to monitor or manipulate body functions. However, conventional implantable devices (e.g., pacemaker and neurostimulator) are still bulky and rigid, which is mostly due to the energy storage component. In addition to mechanical mismatch between the bulky and rigid implantable device and the soft human tissue, another significant drawback is that the entire device should be surgically replaced once the initially stored energy is exhausted. Besides, retrieving physiological information across a closed epidermis is a tricky procedure. However, wireless interfaces for power and data transfer utilizing radio frequency (RF) microwave offer a promising solution for resolving such issues. While the RF interfacing devices for power and data transfer are extensively investigated and developed using conventional electronics, their application to implantable bioelectronics is still a challenge owing to the constraints and requirements of in vivo environments, such as mechanical softness, small module size, tissue attenuation, and biocompatibility. This work elucidates the recent advances in RF-based power transfer and telemetry for implantable bioelectronics to tackle such challenges.
ISSN
2192-2640
URI
https://hdl.handle.net/10371/179070
DOI
https://doi.org/10.1002/adhm.202100614
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