ClosureFast™ radiofrequency ablation is a minimally invasive treatment for varicose veins. Similar to endovenous laser therapy (EVLT/EVLA), it uses heat to seal abnormal veins. Instead of laser energy, ClosureFast™ delivers controlled radiofrequency energy, gently heating the vein wall to close the faulty channel.


The procedure is performed on an outpatient basis under local anaesthetic, so most patients walk in and walk out the same day without the need for general anaesthesia or hospital admission.

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What to expect during the ClosureFast™ procedure

• Small incision: A tiny incision is made below the knee.


• Ultrasound guidance: The ClosureFast™ catheter is inserted into the diseased vein using ultrasound.


• Segmental treatment: Each 7 cm segment receives a 20-second burst of radiofrequency energy, shrinking and sealing the vein wall.


• Progressive closure: The catheter is withdrawn in stages until the entire vein is closed.


• Efficient timing: A typical 45 cm vein can be treated in 3–5 minutes.

Once the vein is sealed, blood naturally reroutes to healthy veins, improving circulation and relieving symptoms.

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Frequently asked questions

What is the ClosureFast procedure?

ClosureFast uses radiofrequency energy delivered through a catheter to heat and seal varicose veins under local anaesthetic.

Is ClosureFast painful?

The procedure is performed under local anaesthetic. Most patients feel only mild warmth or pressure.

How long does the ClosureFast procedure take?

Treatment usually takes 45–60 minutes per leg, with additional time for preparation and observation.

How long is recovery after ClosureFast?

Patients typically walk immediately after treatment and return to normal activities within 24 hours.

Are the results permanent?

Treated veins do not return, but new varicose veins can develop over time. Follow‑up helps maintain long‑term results.

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