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 be positioned between annular pusher bands that may also be radiopaque markers. The annular pusher bands can be made of wire or sections of material to increase flexibility while remaining radiopacity. A post deployment dilation device can be included. The post deployment dilation device can be a plurality of expansion filaments, a bellows, or a balloon. A tack deployment method can include allowing a self-expanding tack to expand, aligning the post deployment dilation device under the tack, and causing the post deployment dilation device to expand radial to push outward on the tack.

主权项

1. A delivery device comprising:
an inner shaft having a first diameter; a distal annular band surrounding and fixed to the inner shaft; a proximal annular band surrounding and fixed to the inner shaft, wherein the distal annular band and the proximal annular band have a second diameter that is larger than the first diameter a delivery platform defined by a proximal end of the distal annular band and a distal end of the proximal annular band, wherein the delivery platform is configured to receive a self-expanding intraluminal device between the distal annular band and the proximal annular band and around the inner shaft for deployment from the delivery device into a vessel; 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a pre-deployment position covering the delivery platform, and at least one delivery position where the outer sheath is withdrawn exposing the delivery platform and at least one of the distal annular band and the proximal annular band; and a post dilation deployment device comprising:
a deployment platform fixed with respect to the inner shaft; anda plurality of expansion filaments radially spaced around the inner shaft, each expansion filament of the plurality of expansion filaments having a first end fixed with respect to an end of the deployment platform, the plurality of expansion filaments having a pre-actuated position having a pre-deployment diameter and an actuated position having a deployment diameter larger than the pre-deployment diameter;wherein the post dilation deployment device is configured to apply a radial force to an inner surface of the self-expanding intraluminal device after deployment of the self-expanding intraluminal device so as to improve at least one of expansion of the self-expanding intraluminal device and seating of the self-expanding intraluminal device in the vessel.