A Microelectrode Stimulation System for a Cortical Neuroprosthesis

This paper describes an integrated microelectrode stimulator for intracortical neuroprosthesis. The implantable microelectrode stimulator uses flip-chip technology to be fully implantable without wiring, reducing the risk of infection and increasing robustness. It is small enough to be undetectable and has low power consumption which can be obtained directly from the carrier, through an RF low-coupling transformer, discarding the need for batteries. The system architecture and circuit techniques which overcome some of the application issues are presented. Simulation results and the layout of a prototype prove its feasibility.