A surgically implanted pain pump is a device that helps control long-term (chronic) pain. It pumps medicine into the fluid around your spinal cord. The spinal cord is a bundle of nerves that carry signals, including pain, between your body and your brain.
A thin tube (catheter) is placed into the space around your spinal cord. The tube is attached to a pump that is placed under the skin of your lower belly. The device can stay there as long as you need it. Your doctor can refill the pump with more medicine.
The device is sometimes called an intrathecal pain pump.