Radio-frequency Ablation Treatment for Varicose Veins (VNUS)
A catheter is sited into the main superficial thigh vein and radio-frequency energy is used to heat up the inside of the vein causing it to seal up.
Radio-frequency ablation treatment is an alternative minimally-invasive technique for the treatment of varicose veins using a similar principle to laser treatment. A catheter is introduced under local anaesthetic into the main superficial thigh vein under ultrasound scan guidance. The tip of the catheter is positioned at the junction of the superficial and deep vein in the groin or at the back of the knee and a probe generating radio-frequency energy is used to heat up the inside of the vein causing it to collapse down. Smaller calf veins lower down in the leg in a significant number of patients usually shrink on their own following the treatment or can be treated after 4-6 weeks with foam sclerotherapy treatment or through small incisions (less than 2mm).
Radio frequency ablation for the treatment of varicose veins (VNUS Closure) is now as commonly performed as endovenous laser treatment and is just as effective and usually more convenient as general anaesthesia is not required and a smaller guide-wire can be used. Complications are as for endovenous laser treatment.