Spinal cord stimulators (also known as neurostimulators) are devices which are designed to provide relief from chronic pain. A compact electronic device is surgically implanted in the wall of the lower abdomen, and connected by wire to a strip of electrodes placed next to the back of the spinal cord. The electronics supply low-voltage electrical pulses at the electrodes, which alter the pain signals in the spinal cord, providing partial or complete pain relief from pain. The stimulators are programmable, so that the signal can be adjusted for optimal pain relief after implantation.

Spinal Pumps
Spinal pumps, deliver small doses of a drug such as baclofen to the space around the spinal cord. Because the drug is delivered to the spinal cord itself, much lower doses can be used than when the drug is taken orally or by injection, so that most side-effects of the drug can be avoided. The surgical procedure involves placing a drug reservoir and pump in the wall of the lower abdomen, and connecting a tube to the space around the spinal cord. The drug can be delivered in a controlled fashion by the pump in the reservoir. The reservoir can be refilled as necessary. The use of spinal pumps is also known as 'Intrathecal drug delivery'.