I hear you! I had the pump implanted almost two years ago. Not an iota of relief! Even after having the output upped more times than I can remember! Mine is also a Medtronics. I am currently having the output decreased so I can get this useless thing out of my body.
The pain pump is supposed to be 94% successful. Are we just part of the unlucky crowd? Just curious, but what oral meds were/are you on prior to pain pump.

I wish I could have had the trial with the temporary pump worn outside of my body for a few days. My trial was an injection. First injection was morphine which did nothing. Second injection two weeks later was hydromorphone. That reduced my pain from an 8 down to about a 2. That's why I went for the permanent implant. What a disappointment! Hope you find something that helps. I am just about out of options.