BrainGate[1] was the first BCI for paraplegics, which used Utah arrays to record from the motor cortex in order to guide movement. Matt Nagle[1] was one of the first people to try it. I wonder what is different in this case.
Georgia Tech's Brainlab has had an amazing set of tools that do similar things. A friend of mine helped built something that allowed a disabled person to control a wheelchair using a BCI.
[1] http://en.wikipedia.org/BrainGate [2] http://en.wikipedia.org/wiki/Matt_Nagle