Percutaneous endoprosthesis using suprarenal fixation and barbed anchors

• US 8,721,707 B2
• Filed: 11/14/2011
• Issued: 05/13/2014
• Est. Priority Date: 01/24/2006
• Status: Active Grant

• Current Assignee: Cordis Corporation (Cardinal Health, Inc.)
• Original Assignee: Cordis Corporation (Cardinal Health, Inc.)
• Inventors: Boucher, Donald D., Dugery, Michael, Johnson, Kirk L., Khan, Isaac John, Majercak, David C., Rush, Scott Lyle
• Primary Examiner(s): MASHACK, MARK F
• Application Number:
  US13/295,213
• Publication Number:
  US 20120059452A1
• Time in Patent Office: 911 Days
• Field of Search: 623/1.1, 623/1.11, 623/1.13, 623 115- 116, 623/1.2, 623/1.3, 623 135- 136
• US Class Current: 623/1.15
• CPC Class Codes: A61F 2/07 Stent-grafts
• 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 2002/061 provided with means for allowing access to secondary lumens
• 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 2002/8483 Barbs

Abstract

An endoprosthetic device for treating abdominal aortic aneurysms using suprarenal fixation. A stent ring is anchored in an area above the renal arties using self-flaring barbs that project during the nitinol expansion process. Sutures extend from the stent ring to an area below the renal arties to a bifurcated trunk portion comprising a nitinol fabric on a non-kinking frame. The bifurcated trunk is sealed proximal the iliac arteries and includes iliac leg holders having self-flaring retention struts for non-traumatic holding of iliac leg prosthetics. Suprarenal fixation and collapsible cells having retention projections and barbs that only flare during the nitinol expansion process assist in lowering the devices profile and sheathability for percutaneous delivery and may provide for recapturing the anchored device.

Claims

1. A first tubular percutaneous intra-luminal device having a luminal surface defining an interior comprising:

a collapsible diamond shaped cell having a pair of opposing side arms that span a distance between a first end and a second end of the cell, said cell having a collapsed state and an expanded state, wherein in said collapsed state said opposing side arms are generally straight and disposed generally parallel to each other and wherein in said expanded state said opposing side arms are bent and extend generally laterally away from one another due to diamond foreshortening, thus forming the diamond shape of the cell; and

a centrally disposed strut extending between the first end and the second end of the cell, the strut being configured to deform out of the plane of the luminal surface of the first percutaneous intra-luminal device in a radially inward direction to form a protrusion when the cell is expanded due to diamond foreshortening, the protrusion configured to be mateable with a second frame based intra-luminal device for non-traumatic holding of the second intra-luminal device a barb member extending from the strut, such that the barb member is housed within the cell in the collapsed state and extends beyond the outer diameter of the first percutaneous intra-luminal device in the expanded state to facilitate anchoring.

2. The first tubular percutaneous intra-luminal device of claim 1, wherein said strut includes a weak area, said weak area operating to cause said strut to bend at said weak area and defining the apex of a protrusion defined by said strut.

3. The first tubular percutaneous intra-luminal device of claim 2, wherein said strut includes at least one additional weak area, whereby said strut takes on a “

W”

shape in said expanded state.

4. The first tubular percutaneous intra-luminal device of claim 1, wherein said cell comprises nitinol.