This method is similar to endovenous laser therapy. The desired damage to the diseased vein is achieved through the use of heat by radio frequencies. Using ultrasound guidance, a radiofrequency catheter is inserted through a puncture in the skin. Once the probe is in place, radiofrequency energy is applied to the walls of the vein from the upper end of the catheter, which is now located inside the vein. This radiofrequency ablation procedure uses a segmental application technique. With the ClosureFast catheter, vein segments 7 cm in length, respectively, are heated in 20-second intervals.
The radio frequencies heat the inner wall of the varicose vein to approx. 120 °C and close it. By withdrawing the catheter through the truncal vein from top to bottom, the varicose vein is heated internally and shrinks. The vein treated in this manner turns to scar tissue and is broken down by the body.
Radiofrequency ablation can be performed as an outpatient procedure. In severe cases involving both legs, the procedure can be performed under short-term full sedation or tumescent local anesthesia.
Normally, the patient can resume regular activities 1 – 2 days following the intervention. Athletic activity can be resumed following approx. one week after the procedure. Compression stockings should be worn following the procedure for approx. 2-3 weeks to reduce bruising and swelling in the legs.
Other advantages provided by this method over the invasive stripping procedure include the excellent cosmetic results that are achieved due to the lack of incisions.