A delivery system for an intraluminal medical device comprises an elongate tubular sheath 20 and an elongate tubular pusher 50 slidably disposed within a lumen of the sheath and having a flexible configuration due to circumferentially-extending fins 154 along its exterior surface. The spacing and/or the size of the fins 154 may vary along the pusher 50. Different regions of the pusher 50 may be of materials with different flexibility.
