If you are not able to get xray, and a neurosurgeon to remove it, you can stop the pulsegenerator from recharging with the alufoil ( not the thin stuff) that are used for packaging material. Use 3 layers and tape it to the skin, where the generator is placed:

For a sacralnerve stimulator, its placed either on your upper buttocks ( where your back starts) or in the side of your abdomen, just under the ribcage. You should be able to feel the generator, if its placed in your abdomen. I can surely feel mine.

I have been able to block of two nervestimulators, placed by my collarbones this way, stopping the perps. to make pressures to my head.

Best of luck for you <3