Abstract: The present invention relates to an inner support catheter comprising an elongated catheter body with a distal region having a constrained linear shape and an unconstrained shape. The distal region includes a distal first section and a proximal second section that forms a major curve with the proximal second section in the unconstrained shape. In the unconstrained shape, the proximal second section lies substantially in a first reference plane, while the distal first section is positioned at least partially outside of the first reference plane. This configuration may allow for improved maneuverability and flexibility of the inner support catheter during medical procedures.