I took care of a patient a couple months ago with a pain pump rapidly ramped up to 5mg per day of dilaudid for chronic pancreatitis. She said no help at all. Although there have been some success stories, there is no significant evidence backing their use. If someone has long term relief from oral opiods, but gets side effects maybe worth a try. My off the cuff advice as a non pain doc MD is that it might not be worth the metal?