Spinal Cord Stimulation: The "Pacemaker" for Chronic Pain Relief. You may have heard of Spinal Cord Stimulation (SCS). In this video, we explain how this life-changing technology works and how the implant surgery can help you reclaim your life. The procedure is done in two main steps to ensure it works for you. First, during a "trial phase," a doctor numbs your back and uses a thin needle to slide flexible wires next to your spinal cord. You test these wires for a few days to see if your pain de