Figure 1: The CrossBoss and Stingray catheters. (a) The CrossBoss catheter is an over-the-wire device with a 1 mm rounded tip, a coiled shaft and a moveable proximal torque device that is released under high torque to prevent product damage. (b) The Stingray orienting balloon catheter is an over-the-wire, 10 mm long, 2.5 mm wide, flat balloon catheter designed to deploy within the subintimal plane with exit ports on either side of the balloon. Marker bands identify the location of the exit ports. The Stingray guidewire has a 28-degree bend and a distal probe that extends from the tip to aid reentry.