What Are They?
Perforator veins serve as connections between the two networks of veins in the extremities, the superficial venous system and the deep venous system. Perforators connect the two parallel systems, somewhat like the rungs of a ladder connect the side rails, and normally drain blood from the superficial veins to the deep veins as part of the process of returning oxygen-depleted blood to the heart.
Perforator veins have one-way valves designed to prevent backflow of blood down towards the superficial veins. When those valves no longer function properly and reflux occurs, the buildup of blood and pressure can cause not only the superficial veins but the perforator veins themselves to become incompetent. Perforator veins in the lower leg and ankle are particularly vulnerable to distention and incompetence, and the resultant circulatory problems create an increased likelihood of edema, skin discoloration, dermatitis and skin ulcers in the immediate area.
Like primary superficial veins that become incompetent, perforator veins can be treated. The ClosureRFS™ Stylet is the only endovenous device that the FDA has specifically cleared for treatment of incompetent perforator veins.