General principle of wireless power transmission and its applications in implantable medical devices

Wireless power transmission (WPT) has caused a radical change in the medical field, especially for medical implants. In this paper, a review of wireless power transmission history is given, its basic principle and it's very important role to load various medical implants such as cardiac, visual, gastric and endoscopic implants. The basic design of the WPT for each implant was been presented. This paper also outlines the safety consideration for human exposure to electromagnetic field.