Slotted pusher rod for flexible delivery system

摘要

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.

主权项

1. A delivery system for an intraluminal medical device, the system comprising:
an elongate tubular sheath having a proximal end, a distal end, and a sheath lumen; an elongate tubular pusher slidably disposed within the sheath lumen, the pusher having a proximal end, a distal end, an exterior surface, a lumen defining an interior surface, and a central core circumscribing the pusher lumen; the pusher exterior surface comprising a slotted configuration having a plurality of fins and a plurality of interspaces separating the fins, where a first interspace has a width different than a second interspace, and where there is a varying radial depth within one of the interspaces, wherein the radial depth is defined as the depth from the pusher exterior surface to the central core.