Devices and methods for in situ fenestration of a stent-graft at the site of a branch vessel

Patent metadata

Field	Value
Publication number	US-9566149-B2
Application number	US-201113286980-A
Country	US
Kind code	B2
Filing date	Nov 1, 2011
Priority date	Nov 16, 2010
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

The present disclosure includes a stent-graft comprising a first portion that is configured to engage a vessel wall, a second portion that is configured not to engage the vessel wall, and a perfusion window that is configured to permit blood flow. The stent-graft may further comprise a transition portion between the first portion and the second portion, and the perfusion window may be formed in the first portion, the second portion, and/or the transition portion. In a variety of embodiments, one of the first and the second portion may have a smaller diameter than the other. Similarly, in a variety of embodiments, the transition portion may be frustoconically shaped.

First claim

What is claimed is:

1. A stent-graft comprising:
a stent-graft member including a stent and a graft, the graft defining a lumen for conveying blood flow, the stent-graft member including,
a first portion having a first diameter that is configured to engage a vessel wall of a vessel, the vessel wall defining a vessel lumen,
a second portion having a second diameter that is smaller than the first diameter of the first portion,
a transition portion that has an interior surface and extends between the first portion and the second portion, and
a perfusion window formed in the transition portion and oriented to permit blood flow through the transition portion and parallel to a longitudinal axis of the stent-graft member after deployment of the stent graft member in the vessel; and

an occluder free of any perfusion windows, such that the occluder has a continuous, impermeable wall, the occluder having generally the same shape as an interior surface of the transition portion and being inserted into the stent-graft member to block the perfusion window without blocking flow through the lumen of the stent-graft member.

2. The stent-graft of claim 1 , further comprising a target portion that is fenestratable to receive a side-branch stent-graft.

3. The stent-graft of claim 1 , further comprising an iliac portion that couples to the second portion and is insertable into an iliac artery.

4. The stent-graft of claim 1 , further comprising a target portion that is visible in situ in the presence of a contrast media that perfuses through the perfusion window.

5. The stent-graft of claim 1 , wherein the stent-graft is configured to be fenestrated by a fenestration device and coupled to a side-branch stent-graft.

6. The stent-graft of claim 1 , wherein the second portion of the stent-graft has a plurality of branch apertures each configured to receive a branch stent-graft, the stent-graft further comprising a plurality of branch stent-grafts received in respective ones of the plurality branch apertures, and further wherein the occluder is received in the body such that the occluder is engaged with the inner surface of the wall of the body such that substantially all blood entering the lumen of the body at the proximal end of the body passes through the lumen of the body out the distal end of the body and out of the branch stent-grafts without otherwise flowing through the wall of the body.

7. The stent-graft of claim 1 , wherein the occluder conforms to the interior surface of stent-graft to block the perfusion window without interfering with blood flow through the lumen of the stent-graft member.

8. A stent-graft comprising:
a body including a stent structure and a graft structure, the body having a wall defining an outer surface and an inner surface forming a lumen, the body defining a proximal end and a distal end and including,
a first portion having a perfusion aperture through the wall of body that is oriented to permit blood flow along the outer surface of the body during deployment of the body in the vessel, and
a second portion having a plurality of branch apertures each configured to receive a branch stent-graft;
a plurality of branch stent-grafts received in respective ones of the plurality branch apertures; and
an occluder free of any perfusion windows, such that the occluder has a continuous, impermeable wall, the occluder being separate from the body and received in the body such that the occluder is engaged with the inner surface of the wall of the body to block flow through the perfusion aperture following deployment of the body such that substantially all blood entering the lumen of the body at the proximal end of the body passes through the lumen of the body out the distal end of the body and out of the branch stent-grafts without otherwise flowing through the wall of the body.

Assignees

• Shaw Edward E
• Gore & Ass

Inventors

• Shaw Edward E

Classifications

• A61F2250/0071

  breakable or frangible · CPC title

• A61F2002/821

  Ostial stents · CPC title

• A61F2/89

  the wire-like elements comprising two or more adjacent rings flexibly connected by separate members · CPC title

• A61F2/90

  characterised by a net-like or mesh-like structure · CPC title

• A61F2250/0098

  radio-opaque, e.g. radio-opaque markers · CPC title