Sub-Dermal Tiny Devices To Alleviate Chronic Pain
Concept, currently under development:
Texas-based MicroTransponder has come up with a neural stimulator to ease chronic pain. Small electrodes are implanted by injection in a procedure that takes only 30mn. Once in place, stimulators are powered by a low-energy radio signal, like RFID tags.
With this technology, there is no need for wires or battery replacement. It is possible to tweak some settings using a PDA or a laptop.
Via ubergizmo.com

soon i will no longer feel my leg!
Droud, anyone?