Wireless Smart Implants Dedicated to Multichannel Monitoring and Microstimulation

This invited paper covers several techniques and methods employed to build high reliability circuits and systems dedicated to implement advanced implantable and wirelessly controlled smart medical devices such as sensors and microstimulateurs. A global view of typical micro-devices such us neural signals monitoring device, cortical multichannel stimulator, as well as peripheral nerve interfaces to recuperate bladder functions, is given. In addition, case studies related to peripheral and cortical neural systems are reported. In all these devices, special attention is paid to low-power management of involved systems and to the design of corresponding circuits of such typical implantable multi-disciplinary microsystems.