Stent graft

• US 8,118,856 B2
• Filed: 07/27/2010
• Issued: 02/21/2012
• Est. Priority Date: 07/27/2009
• Status: Active Grant

• Current Assignee: Endologix
• Original Assignee: Endologix
• Inventors: Schreck, Stefan, Hawkins, Daniel
• Primary Examiner(s): Isabella, David
• Assistant Examiner(s): COBURN, LESLIE ANN
• Application Number:
  US12/844,266
• Publication Number:
  US 20110022153A1
• Time in Patent Office: 574 Days
• Field of Search: 623/1.13, 623/1.16, 623/1.25
• US Class Current: 623/1.13
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• CPC Class Codes: A61F 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2002/067 modular
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/077 having means to fill the space between stent-graft and aneurysm wall, e.g. a sleeve
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2250/0024 made from both porous and non-porous parts, e.g. adjacent parts

Abstract

Some embodiments are directed to a stent graft comprising a first stent graft having a first stent, a first inner graft supported by the first stent, a second inner graft supported by the first stent, and an outer graft. The second inner graft can be spaced apart from the first inner graft so that a portion of the first stent is not covered by the first inner graft or the second inner graft. A first and second portion of the outer graft can be attached to the first stent, the outer graft being unsupported by the stent between the first and second portions so as to form a fillable space between the outer graft, the first inner graft, and the second inner graft. Some embodiments further comprise a second stent graft deployable within the inside of the first stent graft to sealingly cover the uncovered portion of the first stent.

Claims

1. A stent graft system comprising:

a first stent graft having a first stent, a first inner graft supported by the first stent, a second inner graft supported by the first stent, and an outer graft;

wherein;

the second inner graft is spaced apart from the first inner graft so that a portion of the first stent is not covered by either the first inner graft or the second inner graft; and

a first portion and a second portion of the outer graft are attached to the first stent, the outer graft being unsupported by the stent between the first and second portions so as to form a fillable space between the outer graft, the first inner graft, and the second inner graft;

a second stent graft deployable within the inside of the first stent graft so as to sealingly cover the uncovered portion of the first stent, the second stent graft having a second stent and a second graft and a length that is greater than a length of the uncovered portion of the first stent graft.

2. The stent graft system of claim 1, wherein the first and second inner grafts are adjacent to an outside surface of the first stent.

3. The stent graft system of claim 1, wherein at least a middle portion of the outer graft has a larger circumference than the first inner graft and the second inner graft.

4. The stent graft system of claim 1, wherein the outer graft is expandable away from the first and second inner grafts.

5. The stent graft system of claim 1, wherein the outer graft is configured to expand against an inside surface of a vessel wall when blood flows through the uncovered portion of the first stent graft.

6. The stent graft system of claim 1, wherein at least one of the first stent and the second stent is balloon expandable or self-expandable.

7. The stent graft system of claim 1, wherein the first stent graft is a bifurcated stent graft.

8. The stent graft system of claim 1, further comprising one or more radiopaque markers supported by the outer graft.

9. The stent graft system of claim 1, wherein the uncovered portion of the first stent graft is located in a middle portion of the first stent graft.

10. The stent graft system of claim 1, wherein the first stent graft is positioned in a branch vessel, the first stent graft being supported by a main branch stent graft.

11. The stent graft system of claim 10, wherein the branch vessel is an iliac artery.