Implantable stimulator for biomedical applications

Considerable scientific and technological effort has been devoted to develop implantable wireless stimulator systems for biomedical applications. The main purpose of such stimulator system is to provide electrical excitation to human body cells to help patient re-gain lost body function or rectify fault body function, in an elegant way that there is no notable cosmetic difference when patients are equipped with these systems. This paper provides a brief summary of the historical timeline of the electrical stimulator and reviews challenges in the development of implantable wireless stimulator system. At last of this paper a system architecture design of an implantable stimulator system is given as an example for a specific muscle stimulation application.