Laser extraction is a safe and effective way to remove implanted pacemaker and defibrillator leads. Lead extraction can become complicated, because scar tissue will often form around the lead, binding it to the lining of the heart and blood vessels. In order to be removed, the scar tissue must be separated from the lead. Before laser extraction, physicians cut the leads from the tissue. Often, while cutting away the scar tissue, healthy tissue could be damaged. Laser extraction uses ultraviolet rays to vaporize scar tissue surrounding the lead. This procedure is less likely to damage or tear the lining or heart and blood vessels, and is less time consuming and therefore less traumatic to the patient.