Metamaterial integrated highly efficient wireless power transfer system for implantable medical devices

Uppsala universitet, Fasta tillståndets elektronik Indian Inst Engn Sci & Technol, Dept Elect & Telecommun Engn, Sibpur 711103, India. 2024

In this article, a novel and highly efficient metamaterial (MTM) integrated approach is presented for the development of a wireless power transfer system (WPT) specifically tailored for implantable medical devices. The system is designed by using a biocompatible implantable ring slot antenna constructed on a flexible dielectric, functioning as a receiving (Rx) antenna. Additionally, a conventional patch antenna is modelled for the use in free space, serving as an external transmitting (Tx) element. By exploiting the unique characteristics of MTMs, the power transfer efficiency (PTE) of the introduced system is effectively improved. To ensure the system's performance stability in real-time application scenario, the effects of misalignment (lateral and angular) and the flexibility of the implantable antenna are meticulously performed. The prototypes of the Tx, Rx, and MTM structures are fabricated, and comprehensive measurements are performed in human -equivalent tissue models, such as skin-mimicking gel and minced pork. Both the simulated and measured results established the proposed methodology, showcasing marked improvements in PTE due to the use of MTMs. The efficiency of the pioneering MTM-integrated WPT system increases from 0.19% to 3.07% in skin-mimicking gel and from 0.24% to 3.26% in minced pork, respectively. This study highlights the potential of MTM-integrated WPT systems in advancing the field of implantable medical devices and expanding their practical applicability.

Wireless power transfer; Implantable medical devices (IMDs); Flexible implantable antenna; Biocompatibility; Metamaterial (MTM); Power transfer efficiency (PTE); Other Electrical Engineering, Electronic Engineering, Information Engineering; Annan elektroteknik och elektronik; Transport Systems and Logistics; Transportteknik och logistik; Article in journal; info:eu-repo/semantics/article; text

10.1016.j.aeue.2023.155010

Open access content. Open access content
info:eu-repo/semantics/openAccess

application/pdf
English

UPE oai:DiVA.org:uu-528475
0000-0002-7861-2459
0000-0002-1092-6216
0000-0001-6062-7479
0000-0003-4821-8087
0000-0002-2876-223X
doi:10.1016/j.aeue.2023.155010
ISI:001111727900001
1457586438

UPPSALA UNIV LIBR
From OAIster®, provided by the OCLC Cooperative.

edsoai.on1457586438