The VNUS Closure procedure is offered for treating larger varicose veins and is indicated for those patients who meet certain medical guidelines. The Closure procedure is performed on an outpatient basis by using radiofrequency (RF) energy applied to the inside vein walls of the damaged vessel. As the RF energy is delivered and the catheter is withdrawn through the damaged vein, the vein wall heats up causing the wall to shrink and the vein to close. Patients who undergo the Closure procedure often resume normal activities quickly with excellent cosmetic and therapeutic results. The procedure is covered by most insurance plans.