elescopic LV lead delivery system BIOTRONIK has an unsurpassed legacy of quality and innovation that safeguards patient safety. Our new telescopic lead delivery system was developed for maximum convenience and ease of use during coronary sinus lead implantations. Due to its unique and innovative design this new LV lead delivery system does not only represent a significant advancement in lead placement systems for cardiac resynchronization therapy (CRT) devices but will provide implanters with an optimal tool to make even the most challenging implantations a success: Selectra. The first choice. Telescopic system with inner catheters The combination of Selectra outer catheters with inner sub-selection catheters enables direct delivery of low-profile coronary sinus leads. All inner catheters incorporate a streamlined, slittable in-line luer for ergonomic one-handed manipulation and contrast injection.