Demonstration of Healthcare-Specific Li-ion Battery Charging Using Ultrasound Power Delivery

Devices used in healthcare applications frequently require powering. With the rapid development of implantable devices for disease treatment, as well as smart digital devices dedicated for healthcare operations, wireless charging of these systems is critical. The majority of wireless powering currently uses electromagnetic fields. This work describes the in vivo demonstration of Ultrasound Power Delivery (UPD) for charging Li-ion batteries, adequate for a gastro-esophageal junction (GEJ) neurostimulator device, while fulfilling the charging module's space budget of 1.2 cc. Using the same 1 - 3 MHz UPD approach, this work describes the feasibility of charging batteries for smart devices intended for dedicated applications in a healthcare environment, with similar specifications as the wireless Qi-standard version 1.0.