Abstract: The present invention provides a flexible catheter system and method for providing easier access and delivery of therapeutics and or devices via the human vasculature. The flexible catheter system comprises a luer connector attached to a flexible catheter body by a proximal shaft. The method includes the steps of providing a patient in need of an interventional procedure, obtaining a flexible catheter system, inserting the flexible catheter system into the patient through the right radial artery located in the right arm of the patient, and tracking the flexible catheter body from the right radial artery to the heart of the patient.