Subjects will undergo an evaluation of the PTFE encapsulation of Nitinol stents to provide data on the device's feasibility for therapeutic clinical use. Follow-up will be completed at 1, 6, 12, 24, 36, 48, and 60 months. Subject evaluation at 1 month will include a Complete History and Physical, Bilateral ABIs, Abdominal Duplex Ultrasound, and a KUB X-ray (4 views). Subject evaluation at 6 months will also include a Complete History and Physical, Bilateral ABIs, Abdominal Duplex Ultrasound, KUB X-ray (4 views), and based on the duplex ultrasound an Abdominal CT scan with and without IV contrast 2.5 mm and Labs (BUN/Creatinine). Subject evaluation at 12, 24, 36, 48, and 60 months will include a Complete History and Physical, Bilateral ABIs, Abdominal CT scan with and without IV contrast 2.5 mm, Abdominal Duplex Ultrasound, KUB X-ray (4 views), and Labs (BUN/Creatinine).