In cooperation with Cook Medical, The Vascular Experts are pleased to be the only center in New England for this multicenter, international trial, testing the first stent specifically designed for venous disease. Three of our expert vascular surgeons are enrolling patients in this trial: Dr. Gagne, Dr. Kucher, and Dr. Bowman. Patients qualified to participate must be over the age of 18, can have a DVT (deep vein thrombosis) or chronic swelling and leg pain. This trial aims at getting FDA approval for this specially designed venous stent which has been used in Europe for several years.