Edwards EndoReturn Arterial Cannula, model ER21B and ER23B || Product Usage: || The ThruPort EndoReturn arterial cannula kit (with or without hemostasis valve), an introducer, a guidewire,and a connector hub. The ThruPort catheter introducer sheath kit includes a wire reinforced cannula with hemostasis valve, an introducer, and a guidewire. The cannulae have a wire reinforced section to provide kink resistance and flexibility, tapered tips to aid in insertion and advancement into the femoral artery, a non-reinforced clamp site, a 3/8 in. (9.5 mm) barbed connector, and a hemostasis valve (available on some versions) that allows passage of catheters, such as the EndoClamp aortic catheter. The introducers accept a .038 in. (0.97 mm) guidewire and are marked to simplify assembly and indicate alignment. On some versions, a connector hub secures and immobilizes the introducer within the cannula for easier, one person insertion of the cannula/introducer assembly.