This article explains, in educational terms, radiofrequency ablation varicose veins — how the technology works and where it fits. 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. 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
Modern management has shifted from open surgical stripping toward catheter-based endovenous techniques that are typically performed under local anesthesia in an outpatient setting. Device selection depends on vein anatomy, diameter, tortuosity, and clinician preference, and is always determined on a case-by-case basis by the treating physician. Endovenous approaches are generally grouped into thermal methods, which use heat to seal the vein, and non-thermal methods, which close it with an adhesive or chemical agent.
Radiofrequency Ablation (RFA) for Veins
Radiofrequency ablation uses a catheter that heats the vein wall through radiofrequency energy rather than laser light, typically in controlled segmental cycles. Continuous temperature and impedance feedback allows the generator to regulate power and maintain a target wall temperature. INVAMED's ThermoBLOCK system pairs an RF generator with dedicated catheters and stylets and, according to the company, maintains vein-wall temperatures in the 85–120 °C range depending on protocol. INVAMED reports 95%+ efficacy for saphenous reflux with ThermoBLOCK; as with all such figures, real-world outcomes are determined by patient selection and technique.
Design and Technical Notes
INVAMED groups its venous portfolio around the way each device closes an incompetent vein, giving clinicians thermal, non-thermal, and adjunct options. Because varicose disease reflects an ongoing tendency, follow-up and surveillance help detect new reflux early. Graduated compression is commonly used after ablation to support the treated limb, per clinician protocol.
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.
- Graduated compression is commonly used after ablation to support the treated limb, per clinician protocol.
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.
Are these devices CE marked?
Device availability and regulatory status vary by country. Please contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.
Does INVAMED offer both thermal and non-thermal vein devices?
Yes. INVAMED's venous line includes thermal systems (LaserBLOCK laser and ThermoBLOCK radiofrequency) and a non-thermal cyanoacrylate system (VenaBLOCK).
Clinical and Technical Context
Both thermal and non-thermal INVAMED devices can be applied to saphenous targets, with the choice guided by vein diameter and clinician judgment. INVAMED's ThermoBLOCK system pairs an RF generator with dedicated catheters and stylets and, according to the company, maintains vein-wall temperatures in the 85–120 °C range depending on protocol. 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. All INVAMED venous devices are intended for use by trained clinicians under ultrasound guidance and per the IFU. 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. As with all venous treatments, the agent, concentration, and volume are selected by the clinician for the specific vein being treated. INVAMED's LaserBLOCK platform is built around a 1470 nm wavelength with bare and radial fiber options; the manufacturer positions the 1470 nm system as designed to reduce bruising compared with legacy 980 nm devices.
Related on INVAMED
- Varicose Vein — product category
- How soon can I walk after vein ablation?
- Comparing Sclerotherapy and Laser treatment
- What is the difference between thermal and non-thermal vein ablation?
Important Disclaimer
This article is intended for general educational and technical information about medical device technologies. It is not medical advice, a diagnosis, or a treatment recommendation, and it does not replace consultation with a qualified healthcare professional. Any decision about diagnosis or treatment should be made by a licensed clinician based on an individual assessment. INVAMED devices are intended for use by trained healthcare professionals in accordance with the applicable Instructions for Use (IFU) and local regulatory approvals. Product availability and indications vary by country.
Reviewed by the INVAMED Medical Affairs team. Content is educational and technical in nature.