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Publication Number
US-10993824-B2
Publication Date
2021-05-04
Expiration Date
Abstract
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.
Core Innovation
The invention relates to a delivery device that deploys a self-expanding intraluminal device into a vessel. The delivery device includes an inner shaft and distal and proximal annular bands fixed to the inner shaft, where the bands define a delivery platform for receiving the self-expanding intraluminal device between the distal annular band and the proximal annular band and around the inner shaft. An outer sheath positioned on and slidable over the inner shaft and the delivery platform has a pre-deployment position covering the delivery platform, and at least one delivery position where the outer sheath is withdrawn to expose the delivery platform and at least one of the distal annular band and the proximal annular band.
After deployment, the delivery device includes a post deployment dilation device to apply radial force to an inner surface of the self-expanding intraluminal device. The post deployment dilation device comprises a deployment platform fixed with respect to the inner shaft and a plurality of expansion filaments radially spaced around the inner shaft. Each expansion filament has a first end fixed with respect to an end of the deployment platform and transitions from a pre-actuated position having a pre-deployment diameter to an actuated position having a deployment diameter larger than the pre-deployment diameter.
In the pre-actuated position, the plurality of expansion filaments lie within a plurality of expansion filament recesses so that the plurality of expansion filaments lie substantially below a surface of the deployment platform. The post deployment dilation device is configured to apply radial force 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. The document further describes sequential deployment and alignment aspects using radiopaque markers and an outer sheath withdrawn in increments, together with post-deployment dilation mechanisms implemented using expansion filaments.
Claims Coverage
The independent claim is clm-00001. It includes a delivery device architecture for deploying a self-expanding intraluminal device and a post-deployment dilation device that applies radial force to improve expansion and/or seating, with filaments constrained in recesses in a pre-actuated position.
Annular-band delivery platform with retractable outer sheath
A delivery device including an inner shaft with a distal annular band and a proximal annular band fixed to the inner shaft, wherein the distal and proximal annular bands have a second diameter larger than a first diameter and define a delivery platform configured to receive a self-expanding intraluminal device between the distal annular band and the proximal annular band for deployment into a vessel, with an outer sheath slidable over the inner shaft and delivery platform and withdrawn from a pre-deployment position to at least one delivery position exposing the delivery platform and at least one of the distal annular band and the proximal annular band.
Post-deployment radial-force dilation using radially spaced expansion filaments
A post deployment dilation device comprising a deployment platform fixed with respect to the inner shaft and a plurality of expansion filaments radially spaced around the inner shaft, where each expansion filament has a first end fixed with respect to an end of the deployment platform and is movable from a pre-actuated position with a pre-deployment diameter to an actuated position with a deployment diameter larger than the pre-deployment diameter.
Filaments constrained within recesses to lie below the deployment platform surface in the pre-actuated position
The plurality of expansion filaments are configured to lie within a plurality of expansion filament recesses when in the pre-actuated position such that the plurality of expansion filaments lie substantially below a surface of the deployment platform, while the post deployment dilation device is configured to apply radial force to an inner surface of the self-expanding intraluminal device after deployment to improve at least one of expansion and seating in the vessel.
Across clm-00001 (and its dependents), the core claim coverage centers on deploying a self-expanding intraluminal device from a delivery platform defined by annular bands using a retractable outer sheath, and then applying post-deployment radial force through radially spaced expansion filaments that transition from a pre-actuated, recess-contained position to a larger actuated diameter to improve expansion and/or seating.
Stated Advantages
Improve at least one of expansion of the self-expanding intraluminal device and seating of the self-expanding intraluminal device in the vessel.
Documented Applications
Not explicitly described in patent.
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