I had my medtronic pain pump implanted two years ago. It has never given me any pain relief. I've had its output cranked up more times than I can remember. At one point it gave me weird feelings, so I have been having it decreased for a few months with the intention of getting it removed. I just contacted the pain doc who did the trial to see how much he shot into my back to make my pain level drop from an 8 down to a 2. If it was significantly higher than what I was getting from the actual pump output, I may try having the output increased again. The pain pump is supposed to have a success rate of 94%, so why am I hearing of so many patients who have not gotten much pain relief?
Anyway, I certainly hope that you can get better results than I did.