I am looking for information on the brand of median nerve stimulator (sometimes called a right median nerve stimulator or RMNS or MNS) used for patients with Traumatic Brain Injury in a vegetative state. I know that Empi is used, but now sure what model. Does anyone know?

I know that this forum is for spinal cord injuries, so I apologize if this is too off-topic, but I thought someone out there may be able to help. I don't know where else to look for this type of information.

This is for my father, who suffered a TBI in August.