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Design of disposable film-type capacitive wireless charging for implantable medical devices

This paper presents the design of capacitive wireless charging (CWC) for implantable medical devices using a film-type electrode. We clarify two points using a porcine skin with subcutaneous fat with a high affinity for the human body. One is the operational principle of CWC using a simplified equiv...

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Bibliographic Details
Main Authors: Tamura, Masaya, Murai, Kousuke, Matsumoto, Marimo
Format: Conference Proceeding
Language:English
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Summary:This paper presents the design of capacitive wireless charging (CWC) for implantable medical devices using a film-type electrode. We clarify two points using a porcine skin with subcutaneous fat with a high affinity for the human body. One is the operational principle of CWC using a simplified equivalent circuit. The crucial parameters for the design are derived from a theoretical equation on maximum available efficiency, max. The other is to clarify the power transfer efficiency via CWC demonstration. The measured results showed that a max of 47.5% at 308 MHz could be achieved and a of RF-DC could reach about 23% at an input power of 70 mW. This study will enable implantable devices that can be charged during breaks or sleeping at home, and the patient burden will be greatly reduced.
ISSN:2576-7216
DOI:10.1109/IMS19712.2021.9574969