Veins act since the return route for blood which includes delivered oxygen and nutrients to system tissues. After this Trade happens inside the capillaries, veins have the oxygen-depleted blood back to the heart and lungs for reoxygenation. Endovenous ablative therapy: Ablation of incompetent veins makes use of thermal Power by radiofrequency https://sgvasculargrp.com/medical-condition/varicose-spider-veins/