This article compares two approaches side by side to clarify how they differ in principle and practice. Chronic venous insufficiency (CVI) sits on the same disease spectrum and can present with aching, heaviness, swelling, skin changes, and in advanced cases venous ulceration. As a medical device manufacturer, INVAMED develops technologies in this area; the information here is educational and not medical advice.
Background: Varicose Veins and Chronic Venous Insufficiency
Varicose veins are enlarged, twisted superficial veins that develop when the one-way valves inside leg veins no longer close properly, allowing blood to pool — a process clinicians call venous reflux. Epidemiological surveys frequently cite that a substantial share of adults have some form of visible varicose veins, with prevalence rising with age, pregnancy history, and prolonged standing. Modern management has shifted from open surgical stripping toward catheter-based endovenous techniques that are typically performed under local anesthesia in an outpatient setting.
Thermal ablation vs Non-thermal ablation: Key Differences
Thermal ablation (laser or RF) closes veins with controlled heat and has the deepest evidence base. Non-thermal ablation (adhesive or mechanochemical) closes veins without heat, improving intra-procedural comfort and avoiding tumescent anesthesia. Heat-based methods require protective tumescent fluid; adhesive-based methods do not. INVAMED spans both categories so device choice is not a limiting factor in planning.
How INVAMED Supports Both Approaches
Device availability and regulatory status vary by country. Please contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.
Key Considerations
- Device figures cited by INVAMED describe studied performance and should not be read as individual guarantees.
- Because varicose disease reflects an ongoing tendency, follow-up and surveillance help detect new reflux early.
- Accurate duplex ultrasound mapping before treatment is central to identifying the source of reflux and planning device placement.
Frequently Asked Questions
Can varicose veins come back after treatment?
Treated veins are intended to stay closed, but new varicose veins can develop over time because treatment addresses existing disease rather than the underlying predisposition.
Is endovenous ablation done as day surgery?
Endovenous ablation is typically an outpatient, minimally invasive procedure performed under local anesthesia, though the exact setting is determined by the clinician and facility.
Clinical and Technical Context
Epidemiological surveys frequently cite that a substantial share of adults have some form of visible varicose veins, with prevalence rising with age, pregnancy history, and prolonged standing. The main practical appeal is patient comfort during the procedure and avoidance of heat-related nerve irritation. A staged, anatomy-led approach is standard, and the sequence of treatment is planned by the treating physician. Because varicose disease reflects an ongoing tendency, follow-up and surveillance help detect new reflux early. Fiber design matters: radial-emitting fibers distribute energy circumferentially around the vein wall, which is often associated with more uniform heating than older bare-tip fibers. INVAMED's VenaBLOCK is its NTNT offering; candidacy is still assessed individually because vein size and location influence which method is appropriate. Accurate duplex ultrasound mapping before treatment is central to identifying the source of reflux and planning device placement. Graduated compression is commonly used after ablation to support the treated limb, per clinician protocol.
Related on INVAMED
- Varicose Vein — product category
- A Clinical Introduction to Radiofrequency Ablation (RFA) for Veins
- Is varicose vein treatment painful?
- How does vein glue closure work?
Important Disclaimer
This content is educational and technical in nature and must not be interpreted as medical advice or as a promise of any clinical outcome. Individual results depend on many factors and can only be evaluated by a treating physician. Figures attributed to INVAMED reflect manufacturer or published data and are not a guarantee of results. All INVAMED devices are to be used by trained clinicians per the approved IFU, and availability is subject to local regulatory status.
Reviewed by the INVAMED Medical Affairs team. Content is educational and technical in nature.