“Implementation of Wireless Power Transfer System for Prosthetic hand”

The higher demand of the patients accelerates the modernization and fabrication of the biomedical electronic devices (BEDs) for therapies, treatment and rehabilitation. Long-term, reliable and continuous powering of such devices has been the primary challenge since the first introduction of these devices. In this project for ISSS innovation award, 2018, an inductively coupled wireless power transfer (WPT) system is implemented as an alternative power source for prosthetic hand. Prosthetic hand is one of the growing and popular BEDs among the physically disabled population. This medical device suffers extensively due to the storage limitation of the battery. Therefore, a WPT link is proposed to supply power continuously for such devices. The transmitter circuit and WPT coils are modeled and implemented along with commercially available receiver circuit and multiple motors. The tissue safety is validated by simulation of specific absorption rate and measuring the temperature variation inside a phantom mimicking the properties of human muscle.