Braided Flange Branch Graft for Branch Vessel

Abstract

A braided flange branch graft formed of a braided super elastic memory material includes a neck between an inner flange and an outer flange. The neck is positioned in a side opening in a sidewall of a main stent graft and the inner flange and outer flange are deployed on opposite sides of the sidewall. The inner flange and the outer flange have a diameter greater than a diameter of the side opening in the sidewall of the main stent graft. Thus, the sidewall of the main stent graft is sandwiched between the inner flange and the outer flange securely and simply mounting the braided flange branch graft to the main stent graft. The braided flange has a substantially unobstructed fluid communication passage therethrough. Further, when stretched into a substantially cylindrical shape for delivery, the braided flange branch graft has a small delivery profile and is extremely flexible.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an intra-vascular device and method. More particularly, the present invention relates to a device used to treat aneurysms where a branch connection from a main stent graft crosses the ostium of a branch vessel.[0003]2. Description of Related Art[0004]A conventional main stent graft typically includes a radially expandable reinforcement structure, formed from a plurality of annular stent rings, and a cylindrically shaped layer of graft material defining a lumen to which the stent rings are coupled. Main stent grafts are well known for use in tubular shaped human vascular or other body vessel.[0005]Endovascular aneurysmal exclusion is a method of using a main stent graft to partially or completely isolate an aneurysmal sac from systemic blood pressure by preventing pressurized blood flow from pressurizing the interior of an aneurysm, thereby reducing the risk of rupture of the aneurysm and...

AI Technical Summary

Benefits of technology

[0009]The inner flange and the outer flange have a diameter greater than a diameter of the opening in the sidewall of the main stent graft. Thus, the sidewall of the main stent graft is sandwiched between the inner flange and the outer flange securely and simply mounting the braided flange branch graft to the main stent graft. Further, when longitudinally stretched into a substantially cylindrical shape for delivery, the braided flange branch graft has a small delivery profile and is extremely flexible.

Problems solved by technology

However, the silicone flange had a relatively large delivery profile and was somewhat inflexible thus limiting the range of applications in which the silicone flange with attached branch grafts could be used.

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