I had a "pacemaker for pain" implanted three years ago and it gave me back my life! I had tried all manner of treatments and rejected having another surgery. As you probably know, you have to undergo a trial period to see if the stimulator gives you any relief. In my case, the relief was dramatic and immediate, so I had the stimulator implanted. It is an outpatient procedure; you are awake for part of it so that the doc can appropriately place the "wires" to ensure that they are in the right spot. (I didn't feel any pain during that part of the procedure.) I went to work the next day.
It may not take away all of the pain, but in my case, it has given me sufficient relief that I was able to resume many activities that I wasn't able to post-surgery, or approached doing with trepidation, lest they trigger a brainwreck.
You have to periodically re-charge the battery; I do it every night It is a small inconvenience but well worth it considering the benefits I have experienced.
My doc posted an interview with me on his website: dcpaindoc.com
Feel free to pm me with any questions.
Staypoz