What is endovenous laser ablation? It is a minimally invasive procedure that uses targeted laser energy, delivered through a thin fiber inside the vein, to close a diseased superficial vein and help redirect blood flow toward healthier pathways. EVLA (sometimes called EVLT) is commonly used to address varicose veins linked to saphenous vein reflux. It is typically performed in an outpatient setting under ultrasound guidance.
How Does EVLA Work at a Basic Level?
During EVLA, a physician inserts a thin catheter carrying a laser fiber into the affected vein through a small percutaneous access point, usually guided by ultrasound imaging. Laser energy is then delivered along the length of the incompetent vein segment as the fiber is slowly withdrawn.
The heat generated causes the vein wall to contract and seal shut. Blood that once flowed through the diseased vein is naturally rerouted through nearby healthy veins.
Why Is EVLA Used for Varicose Veins?
Varicose veins often develop when valves inside a superficial vein — commonly the great saphenous vein (GSV) or small saphenous vein (SSV) — no longer close properly. This allows blood to pool and flow backward, a condition known as venous reflux.
EVLA is designed to address this underlying reflux, rather than only treating the visible bulging veins on the surface. By closing the source vein, physicians aim to reduce the pressure that contributes to varicose vein formation.
What Happens During an EVLA Session?
A typical EVLA session generally includes the following steps:
- Ultrasound mapping of the diseased vein and surrounding anatomy
- Local or tumescent anesthesia around the vein
- Percutaneous insertion of the laser fiber under ultrasound guidance
- Controlled laser energy delivery as the fiber is withdrawn
- Application of compression to the treated leg
Devices such as the INVAMED LaserBLOCK Varicose Vein Laser System are engineered specifically for this type of endovenous laser treatment, using specialized bare-tip or radial-tip fibers to help distribute energy evenly along the vein wall.
Is EVLA the Same as Traditional Vein Surgery?
No. Traditional vein stripping involves surgically removing the diseased vein through incisions, typically requiring more recovery time. EVLA, by contrast, is a catheter-based approach that avoids extensive incisions.
Because EVLA is less invasive, many patients experience a comparatively shorter recovery period, though individual outcomes vary and all procedures carry some degree of risk. A qualified physician determines whether EVLA or another approach is appropriate for a given patient's anatomy.
Frequently Asked Questions
Is EVLA a surgical procedure?
EVLA is generally classified as a minimally invasive endovenous procedure rather than open surgery, since it is performed through a small percutaneous access point rather than a surgical incision. Still, it is a medical procedure with its own risks and considerations, and candidacy should be evaluated by a physician.
Does EVLA treat spider veins too?
EVLA is generally intended for larger incompetent superficial veins, such as the great or small saphenous vein, rather than small surface-level spider veins. Physicians typically evaluate the size, depth, and pattern of the affected veins before recommending a specific treatment approach.
How long does an EVLA procedure take?
Session length varies depending on the extent of the vein being treated and individual anatomy. Your physician can provide a personalized estimate based on your evaluation.
Related INVAMED Resources
- LaserBLOCK Varicose Vein Laser System
- Varicose Vein Treatment Devices
- Contact INVAMED for More Information
Medical Disclaimer: This article is provided for general informational and educational purposes only and does not constitute medical advice, diagnosis, or treatment recommendation. It is not a substitute for consultation with a qualified healthcare professional. Product indications, availability, and regulatory status vary by country. Always refer to the official Instructions for Use (IFU) and consult a licensed physician for guidance specific to your situation. INVAMED devices are intended for use by trained healthcare professionals.