Sara Giganti
Inductive power transfer receiving system for active implantable medical devices.
Rel. Danilo Demarchi, Paolo Motto Ros, Fabiana Del Bono. Politecnico di Torino, Master of science program in Biomedical Engineering, 2023
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Abstract
Wireless power transfer (WPT) is turning out as a promising approach to power supply Active Implantable Medical Devices (AIMDs) to recharge their batteries without having to surgically explant them. Exploiting such a technology to recharge the implant’s batteries introduces many advantages in terms of safety, reduced invasiveness and limited power consumption. The design of a personalized recharging method, based on inductive wireless power transfer, was mainly conceived to be integrated into two main devices: a nanofluidic drug delivery system and a bidirectional neural interface for neuroprosthetic applications. This project illustrates all the steps required to realize the receiving side of a WPT system resonating at 13.56 MHz ISM band, from its conceptualization to the final realization on printed circuit board (PCB).
Multiple constraints need to be addressed to make this objective feasible, such as the reduced dimensions allowed by the device, thermal heating, radiofrequency (RF) working frequency and proper matching between the source and load impedance
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