Stent alignment during treatment of a bifurcation
Inventors
Bourang, Henry • Khorsandi, Mehran
Assignees
Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-12042412-B2
Publication Date
2024-07-23
Expiration Date
Abstract
A system for treating a bifurcation includes a first radially expandable stent and a second radially expandable stent. The first stent has a side hole and a plurality of lateral elements extending from the side hole. The second stent has a plurality of axial elements extending away from the proximal end of the second stent. The axial elements of the second stent interdigitate with the lateral elements of the first stent when both stents have been expanded.
Core Innovation
The invention relates to a system for treating a target treatment region in a bifurcated vessel using a first radially expandable stent and a second radially expandable stent. Each stent is deliverable in a collapsed configuration to the target treatment region and expandable to an expanded configuration for supporting a vessel wall adjacent the target treatment region. The first stent has a sidewall with a side hole and a plurality of lateral elements.
When expanded, the plurality of lateral elements of the first stent extend laterally away from the side hole, and the plurality of axial elements of the second stent are interdigitated with the plurality of lateral elements of the first stent. This interdigitation occurs in the expanded configuration at the bifurcation, providing scaffolding around the vessel bifurcation while supporting access to a side passage or ostium.
The system further includes a first expandable member on which the first stent is disposed and a second expandable member on which the second stent is disposed, with the second expandable member distal of the first expandable member without overlap therebetween. During simultaneous delivery of the first radially expandable stent and the second radially expandable stent to the target treatment region, the expandable members are positioned to avoid overlap.
Claims Coverage
One independent claim is provided. It defines a bifurcation stenting system with two radially expandable stents that interdigitate in an expanded configuration, coordinated by first and second expandable members that are simultaneously delivered without overlap.
Two radially expandable stents with side hole and interdigitated axial and lateral elements
A system for treating a target treatment region in a bifurcated vessel comprising a first radially expandable stent with a sidewall having a side hole therethrough and a plurality of lateral elements, and a second radially expandable stent with a plurality of axial elements, where the first stent and the second stent each have a collapsed configuration and an expanded configuration.
Expanded configuration supports vessel wall adjacent target treatment region
In the collapsed configuration the first radially expandable stent and the second radially expandable stent are configured for delivery through the bifurcated vessel to the target treatment region, and in the expanded configuration the first radially expandable stent and the second radially expandable stent are configured to support a vessel wall adjacent the target treatment region, with the lateral elements extending laterally away from the side hole in the expanded configuration.
Axial elements interdigitated with lateral elements during expanded configuration
In the expanded configuration, the plurality of axial elements of the second radially expandable stent are interdigitated with the plurality of lateral elements of the first radially expandable stent when the first radially expandable stent and the second radially expandable stent are in the expanded configuration.
Simultaneous delivery without overlap using first and second expandable members
The system further comprises a first expandable member with the first radially expandable stent disposed on the first expandable member, and a second expandable member with the second radially expandable stent disposed on the second expandable member, wherein the second expandable member is distal of the first expandable member without overlap therebetween during a simultaneous delivery of the first radially expandable stent and the second radially expandable stent to the target treatment region.
The independent claim centers on a bifurcation stenting system with two radially expandable stents that are delivered in collapsed configuration and expanded to support the vessel wall adjacent the target treatment region, where axial and lateral elements interdigitate in the expanded configuration, coordinated by first and second expandable members positioned distal without overlap during simultaneous delivery.
Stated Advantages
Uniform continuous scaffolding at a bifurcation without ostial obstruction [as reported in animal testing observations].
Gap reduction across bifurcations by alignment and interdigitation or interleaving of stent ends.
Avoidance of stent jailing via bifurcation treatment placement logic including kissing-balloon expansion.
Documented Applications
Treating a target treatment region in a bifurcated vessel using two radially expandable stents with coordinated interdigitation to scaffold tissue at a bifurcation [including animal-testing observations].
Optional controlled drug delivery via therapeutic agent elution from stents and/or balloons used in the bifurcation treatment context.
Interested in licensing this patent?