Implantable medical devices provide therapy to treat numerous health conditions as well as monitoring and diagnosis. Over\nthe years, the development of these devices has seen remarkable progress thanks to tremendous advances in microelectronics,\nelectrode technology, packaging and signal processing techniques. Many of today�s implantable devices use wireless technology to\nsupply power and provide communication. There are many challenges when creating an implantable device. Issues such as reliable\nand fast bidirectional data communication, efficient power delivery to the implantable circuits, low noise and low power for the\nrecording part of the system, and delivery of safe stimulation to avoid tissue and electrode damage are some of the challenges faced\nby the microelectronics circuit designer. This paper provides a review of advances in microelectronics over the last decade or so\nfor implantable medical devices and systems. The focus is on neural recording and stimulation circuits suitable for fabrication in\nmodern silicon process technologies and biotelemetry methods for power and data transfer, with particular emphasis on methods\nemploying radio frequency inductive coupling.The paper concludes by highlighting some of the issues that will drive future research\nin the field.
Loading....