Have they tried Hydromorphone(Dilaudid)? It's supposed to be about five times stronger then morphine. I had two trials by injection. The first used morphine which did nothing. The second was with Dilaudid which dropped my pain from about a seven down to a two. The permanent implant has not produced the same effect yet. I am in the process of having the output increased to the point at which I will feel some pain relief. I wish you all the best.