1470 nm laser technology has become a widely used wavelength option in endovenous laser ablation (EVLA) for varicose veins caused by saphenous vein reflux. Devices such as the INVAMED LaserBLOCK Varicose Vein Laser System offer a 1470 nm configuration alongside other wavelength options, giving physicians flexibility in tailoring energy delivery to individual patient anatomy.
Why Does Wavelength Matter in EVLA?
Laser wavelength influences how energy is absorbed by tissue during endovenous ablation. Different wavelengths are absorbed to varying degrees by water and hemoglobin within the vein wall and surrounding tissue, which in turn affects how heat is distributed during the procedure.
Wavelengths in the 1470 nm range are generally understood to be absorbed more strongly by water in the vein wall itself, compared to earlier-generation wavelengths such as 810 nm or 980 nm, which are absorbed relatively more by hemoglobin.
How Is 1470 nm Used in Practice?
In clinical use, a 1470 nm laser fiber — often a radial-tip fiber — is introduced into the incompetent vein under ultrasound guidance. Tumescent anesthesia is typically administered around the vein before energy delivery begins. As the fiber is withdrawn along the treated segment, laser energy is applied to promote vein wall contraction and closure.
Because absorption characteristics differ from older wavelengths, physicians may adjust linear endovenous energy density (LEED) settings when using 1470 nm systems, based on vein diameter and individual anatomy.
What Distinguishes 1470 nm From Earlier Wavelengths?
Compared to 810–980 nm systems, 1470 nm technology is often associated with:
- Energy absorption patterns that favor water in the vein wall over hemoglobin
- Use with radial-tip fibers designed to distribute energy circumferentially
- Reports in clinical literature of comparatively less bruising in some cases versus older 980 nm bare-fiber approaches
These are general patterns discussed in clinical literature and should not be interpreted as guarantees of outcome; individual results depend on technique, anatomy, and patient factors.
What Should Physicians Consider When Selecting Wavelength?
Wavelength selection is one of several variables — alongside fiber type, energy settings, and vein diameter — that a physician considers when planning an EVLA procedure. INVAMED's LaserBLOCK platform offers multiple wavelength options (810 nm, 940 nm, 980 nm, and 1470 nm) so physicians can select the configuration appropriate for a given clinical scenario, consistent with the device's Instructions for Use.
Frequently Asked Questions
Is 1470 nm better than other wavelengths for EVLA?
Clinical literature discusses different absorption characteristics between wavelengths, but treatment selection depends on multiple factors, including vein anatomy and physician judgment. No wavelength should be considered guaranteed to outperform another in every case.
What fiber types are used with 1470 nm lasers?
1470 nm systems are commonly paired with radial-tip fibers, which are designed to emit energy circumferentially around the fiber tip, though bare-tip fibers may also be used depending on the device and clinical scenario.
Does 1470 nm eliminate the need for tumescent anesthesia?
No. Tumescent anesthesia is typically still used with 1470 nm EVLA to provide local anesthesia, protect surrounding tissue from thermal effects, and compress the vein around the fiber.
Related INVAMED Resources
- LaserBLOCK Varicose Vein Laser System
- Varicose Vein Treatment Devices
- Request Information from INVAMED
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.