Multi-stent and multi-balloon apparatus for treating bifurcations and methods of use

Inventors

Bourang, Henry

Assignees

Advanced Bifurcation Systems Inc

Abstract

A system for treating a bifurcated vessel that includes a first delivery catheter and a second delivery catheter. The first delivery catheter carries a proximal first stent and a distal second stent. The first delivery catheter also has a first elongate shaft, a proximal first expandable member with the proximal first stent disposed thereover, and a distal second expandable member with the distal second stent disposed thereover. The proximal first expandable member and distal second expandable member are independently expandable of one another. The second delivery catheter carries a third stent. The second delivery catheter also has a second elongate shaft, and a third expandable member with the third stent disposed thereover. The third expandable member is independently expandable of the proximal first expandable member and the distal second expandable member.

Core Innovation

The described invention relates to multi-catheter systems for bifurcated vessel treatment using independently expandable balloon/stent assemblies, in which a first catheter carries proximal and distal stent segments for deployment by independently inflatable proximal and distal balloons. The proximal and distal balloons are configured with a gap between them to allow independent expansion while deploying stent segments along a main branch/mother vessel and bridging toward a bifurcation region.

A second catheter carries a separate side-branch stent deployed via a separate expandable member, such as a balloon, associated with an expandable delivery element for the side branch/daughter vessel. The disclosure further describes creating a side hole in the main/first stent by abutting notched stents so the second catheter can pass through, aligning deployment for lesion treatment across the main vessel and the side branch.

The disclosed system extends the concept to trifurcations by adding additional delivery catheters and expandable members and associated stents for deployment into a third branch. An alternate balloon end configuration with everted ends is also described to reduce or eliminate a persistent gap after inflation, and the disclosure further contemplates optional therapeutic-agent coatings on balloons and/or stents.

Claims Coverage

Not explicitly described in patent. No independent claims were provided in the partial content.

Not explicitly described in patent.

Stated Advantages

Documented Applications