This is a technical overview of an INVAMED device within the varicose vein portfolio. 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
Modern management has shifted from open surgical stripping toward catheter-based endovenous techniques that are typically performed under local anesthesia in an outpatient setting. 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. 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.
LaserBLOCK Endovenous Bare & Radial Fiber Optics: Overview
Single-use bare-tip and radial-tip laser fiber optics for the LaserBLOCK endovenous laser platform; radial fibers provide circumferential energy delivery to the vein wall to reduce perforation risk, while bare fibers deliver forward-firing energy.
How It Works and Where It Fits
INVAMED groups its venous portfolio around the way each device closes an incompetent vein, giving clinicians thermal, non-thermal, and adjunct options. Non-thermal non-tumescent (NTNT) techniques close veins without heat and without the multiple tumescent anesthetic injections thermal methods require. Sclerotherapy injects a liquid or foamed agent that irritates the vein lining and causes it to close, and is often used for smaller tributary and spider veins.
Key Considerations
- 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.
- Accurate duplex ultrasound mapping before treatment is central to identifying the source of reflux and planning device placement.
Frequently Asked Questions
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).
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.
Clinical and Technical Context
As with all venous treatments, the agent, concentration, and volume are selected by the clinician for the specific vein being treated. Modern management has shifted from open surgical stripping toward catheter-based endovenous techniques that are typically performed under local anesthesia in an outpatient setting. 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. 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 a cyanoacrylate system with a dual-lumen catheter design; the company reports a fast in-vessel polymerization and a 97% closure rate at 12 months without tumescent anesthesia. The absence of thermal energy means nerve-injury risk associated with heat is generally reduced, though suitability still depends on individual anatomy. Adjunct chemical agents complement device-based closure by addressing residual superficial branches. 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.
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.