For those keeping score, surgery #38 was Wednesday.
I had the 1st (trial implant) installed. I now have a wire running up my spine, it goes in between my shoulder blades, and goes up into my neck. The other end is connected to a battery pack, (external) and there is a remote which controls the whole thing. It's like having a TENS unit, but without the muscle contractions, and it works on both arms, and if I dial it up high enough, the whole body.
The effect is positional, so if I turn my head or shoulders too far, the sensation becomes stronger/weaker, and if I really stretch, I can force the lead out of place, making this all a wash.
The good news it, it completely blocks the pain in my hands and back while it is on.
#39 is next Tuesday, where they install the battery pack, run a new lead from the internal battery up into my neck, and the whole system is internal.
#40 is forthcoming (sometime in October, I think) when they cut out my gall bladder. Should end the bouts of chest-pain.