What is Radiofrequency (RF) Ablation?

Venefit™ Targeted Endovenous Therapy is the only minimally invasive procedure to use segmental radiofrequency (RF) energy to provide an even and uniform heat to contract the collagen in the vein walls, causing them to collapse and seal the vein closed. Blood is then re-routed through healthy veins back towards the heart.

Understanding the Venefit™ procedure

The Venefit™ procedure involves inserting the Covidien ClosureFast™ Endovenous Radiofrequency Ablation (RFA) Catheter into the diseased vein through a small incision below the knee and threading the catheter through the vessel. In contrast to laser therapy, the ClosureFast™ catheter eliminates the need for continuous pull-back of the energy source, allowing for more controlled and repeatable radiofrequency ablation to 7 cm segments of the target vessel at a time. Blood flow is then naturally redirected to healthy veins as the recovery process begins. The treated vein becomes scar tissue and is eventually absorbed by the body.

Sets the Standard in Patient Care

The Venefit procedure uses a segmental ablation technique, which incorporates the ClosureFast catheter to heat a 7 cm vein length in one 20-second interval. After each segment is treated, the catheter is re-positioned to the next segment, and the process is repeated until the entire length of the diseased vein has been sealed.

The catheter delivers uniform, consistent heat to each segment. In fact, temperatures do not exceed 120°C, unlike some laser energy, which can reach temperatures of over 700°C during treatment.1 Shorter refluxing vein lengths can also be treated using the Covidien ClosureFast™ 3 cm Endovenous Radiofrequency Ablation (RFA) Catheter, which heats vein segments in 3 cm lengths.


  • 1. Weiss RA, et al. Comparison of Endovenous Radiofrequency Versus 810nm Diode Laser Occlusion of Large Veins in an Animal Model. Dermotol Surgery 2002; 28: 56-61.