This is a procurement-oriented overview for distributors, hospitals, and clinics evaluating varicose vein devices. 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. 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. 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.
Regulatory Status and Manufacturing
Device availability and regulatory status vary by country. Please contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.
Portfolio and Sizing
Within this category, INVAMED lists devices such as VenaBLOCK Non-Thermal Treatment for Vein Disease & Varicose Veins, ThermoBLOCK Varicose Vein Radiofrequency Ablation System, ThermoBLOCK Thermal Coagulation RF Ablation Small Vein Needle, LaserBLOCK Varicose Vein Laser System, LaserBLOCK Endovenous Bare & Radial Fiber Optics, VeinOFF Varicose Vein Treatment Agent. Size ranges, materials, and configurations are detailed in product documentation and the applicable IFU.
Key Considerations
- Accurate duplex ultrasound mapping before treatment is central to identifying the source of reflux and planning device placement.
- Device figures cited by INVAMED describe studied performance and should not be read as individual guarantees.
- Vein diameter, depth, and tortuosity influence whether a thermal or non-thermal device is more suitable.
Frequently Asked Questions
Who decides which vein treatment is appropriate?
Only a qualified clinician can decide, based on ultrasound mapping and individual assessment; this article is educational and not a treatment recommendation.
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).
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.
Clinical and Technical Context
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. Graduated compression is commonly used after ablation to support the treated limb, per clinician protocol. 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'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. 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. Vein diameter, depth, and tortuosity influence whether a thermal or non-thermal device is more suitable. A staged, anatomy-led approach is standard, and the sequence of treatment is planned by the treating physician. All INVAMED venous devices are intended for use by trained clinicians under ultrasound guidance and per the IFU.
Related on INVAMED
- Varicose Vein — product category
- What is the success rate of radiofrequency ablation for varicose veins?
- How does vein glue closure work?
- A Clinical Introduction to Radiofrequency Ablation (RFA) for Veins
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.