Avinger Inc. has received U.S. FDA clearance for a its Ocelaris next-generation, image-guided chronic total occlusion (CTO) crossing system for patients with peripheral artery disease (PAD). The catheter-based system, which will be sold under the brand name Tigereye, provides real-time imaging from within the vessel during a CTO-crossing procedure. It will be available on a limited basis beginning later this year.