The CPS Aim SL inner catheter with an integrated valve was specially designed to assist with coronary sinus cannulation, branch vein subselection and left ventricular lead delivery. These catheters are perfectly compatible with other products from the St. Jude Medical Cardiac Positioning System (CPS) family, as part of a system of inter-compatible tools created to give you the control required to deliver left-heart lead efficiently and successfully to your first vein of choice. The CPS Aim SL inner catheter allows for Direct-to-Target placement by providing a tunnel to acute and tortuous venous anatomies for sub 5 F leads and guidewire. These catheters are easy to remove after Direct-to-Target placement with a low slit force. Three CPS Aim SL inner catheters enable atraumatic subselection and there are three curve shapes (acute, 90º, obtuse) all with flouroscopic visibility to enhance first-choice target vein access.