Delivery device and method of delivery

摘要

A delivery device can provide sequential delivery of a plurality of intraluminal devices or tacks held in a compressed state on the delivery device. Delivery platforms on the delivery device can hold a tack in a compressed position and have a unique shape, such as a non-constant outer diameter, an hourglass shape, a tapered proximal half, ridges, dimples, etc. This unique shape can be positioned between annular pusher bands that may also be radiopaque markers. In some embodiments, the unique shape is provided by a sleeve of flexible material with the unique shape surrounding a harder inner shaft. Further, the annular pusher bands can be made of wire or sections of material to increase flexibility while remaining radiopacity. A tack deployment method can include alignment of radiopaque markers on the outer sheath and the tack to be deployed prior to deployment.

主权项

1. A delivery device comprising:
an inner shaft; a delivery platform comprising:
a pair of annular bands around the inner shaft, both of the annular bands having a first outer diameter; anda sleeve secured to the inner shaft and positioned between the annular bands, the sleeve having a lower durometer than the inner shaft and the pair of annular bands, the sleeve further having a non-constant outer diameter being less than the first outer diameter of the annular bands, wherein each of the annular bands comprises a radiopaque helical coil;wherein the delivery platform is configured to receive an intraluminal device for deployment from the delivery device into a vessel, the delivery platform configured to receive the intraluminal device between the annular bands and on the sleeve; an outer sheath positioned on and slidable over the inner shaft and the delivery platform, the outer sheath having a pre-deployment position covering the delivery platform and at least one delivery position where the outer sheath is withdrawn exposing at least one of the annular bands and the sleeve of the delivery platform wherein the non-constant outer diameter comprises a first constant outer diameter section and a second constant outer diameter section having a larger outer diameter than the first constant outer diameter section, but less than the first outer diameter of the annular bands, and the second constant outer diameter section having a shorter axial length than the first constant outer diameter section, the sleeve further having a smooth tapered transition between the first and second constant outer diameter sections.