Radiofrequency Occlusion is an alternative to surgical stripping of certain underlying veins that are the source of surface varicose veins and venous insufficiency. Radiofrequency occlusion presents a valid alternative to traditional methods of varicose vein surgery, ligation and stripping. This patented technique known as the Closure Procedure directly heats the inner lining of the diseased vein using a radiofrequency (RF) catheter instead of a laser filament. A small catheter is inserted, usually through a needle stick in the skin, into the damaged vein. The catheter delivers radiofrequency energy to the vein wall, causing it to heat. As the vein warms, it collapses and seals shut. The procedure is generally done in an outpatient or in-office setting.