EVLT (Endovenous Laser Ablation) allows minimally invasive treatment of varicose veins through a small puncture to get quicker healing and better outcome, without need for vein stripping and surgery. The higher water absorption SAT-M2(1470nm/ 1940nm) with radial fiber formed the ideal combination for Endovenous thermal ablation, the radial fiber provides 360 circular emission directly into the vessel wall bringing the optimal treatment and securing the precise surgery delivery.
The fundamental differences between different wavelengths are related to occurrence of adverse events. Compared with the 1470nm laser, the water absorbed by the 1940nm is 3 times that of blood and vein wall, and its effective optical penetration depth is about a quarter of that of the 1470nm laser. The higher absorption coefficient means that the LEEDs needed when treating with a 1940nm laser are lower than those needed to achieve thermal ablation with more conventional wavelengths.
The 1940nm laser has been proved to be very safe and effective in using parameters, that is, the average power of GSV and SSV is 4.0 W, and the LEED is greater than 30 J/cm (average about 50 J/cm). As the ideal wavelength, 1940nm will produce the maximum possible selective damage with the greatest margin of safety and the lowest procedure-related complication rate. It achieves the best balance.more
Superior cellular water absorption, gives 1470nm wavelength advanced vein ablation results at relatively low power settings, thus reducing thermal damage to surrounding tissues. Significant reduction of postoperative pain and side effects help to reach higher patient satisfaction that promote 1470nm lasers as the universal alternative to conventional 810/980nm lasers. Additionally, it has a very good effect on blood (no risk of bleeding).
Confirmed by clinical statistics, 1470nm’s recommended power ranges from 5 to 10 watts. At settings of less than 12Watts, tissue necrosis and damage can be controlled, and therefore 1470nm 12Watts is a safe and cost-effective configuration.more
During the EVLT treatment, the perforation caused by direct contact is less common with radial fibers than bare fibers, and because circumferential thermal damage occurs more efficiently, effective treatment is possible with lower power and less post-procedural.