Improved devices and methods for removing blood from a blood vessel in preparation for endovenous laser ablation are described. The improved methods include one or more of: placing the patient in the Trendelenburg position, applying external compression around the vein, massaging the vein, cooling the...http://www.google.ca/patents/US7921854?utm_source=gb-gplus-sharePatent US7921854 - Endovenous laser treatment for varicose veins
