ENDOLUMINAL VASCULAR PROSTHESIS

• US 20110218617A1
• Filed: 03/02/2011
• Published: 09/08/2011
• Est. Priority Date: 03/02/2010
• Status: Abandoned Application

• Current Assignee: Endologix
• Original Assignee: Endologix
• Inventors: Nguyen, Jonathon, Macias, Jacqueline, Schreck, Stefan, Tzeng, Elbert
• Application Number:
  US13/039,157
• Publication Number:
  US 20110218617A1
• Time in Patent Office: Days
• US Class Current: 623/1.35
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/852 Two or more distinct overlapping stents
• 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 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• 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 2230/0054 V-shaped
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61F 2250/0063 Nested prosthetic parts
• CPC Class Codes: A61F 2250/0098 radio-opaque, e.g. radio-opaque markers

Abstract

Some embodiments of an endoluminal prosthesis comprise a graft having a first end and a second end, a first stent positioned at a first end of the graft, the first stent comprising a plurality of proximal apices and a plurality of distal apices, a second stent positioned axially adjacent to the first stent comprising a plurality of proximal apices positioned at a first end of the second stent. In some embodiments, the first stent can be partially covered by the graft such that the proximal apices of the first stent are not covered by the graft. The distal apices of the first stent can be positioned approximately on a first or a second plane offset from the first plane. The second stent can be positioned relative to the first stent such that the plurality of proximal apices of the second stent are spaced apart from the plurality of distal apices of the first stent. Further, one or more of the proximal apices of the second stent can be positioned approximately on a third or a fourth plane. The distal apices of the first stent can be circumferentially offset from the proximal apices of the second stent.

Claims

1. An endoluminal prosthesis comprising:

a graft having a first end and a second end;

a first stent positioned at a first end of the graft, the first stent comprising a plurality of proximal apices and a plurality of distal apices; and

a second stent positioned axially adjacent to the first stent comprising a plurality of proximal apices positioned at a first end of the second stent;

wherein;

the first stent is partially covered by the graft such that the proximal apices of the first stent are not covered by the graft;

one or more of the distal apices of the first stent is positioned approximately on a first plane that is perpendicular to a longitudinal axis of the first stent;

one or more of the distal apices of the first stent is positioned approximately on a second plane that is perpendicular to a longitudinal axis of the first stent, the second plane being offset from the first plane;

the second stent is positioned relative to the first stent such that the plurality of proximal apices of the second stent are spaced apart from the plurality of distal apices of the first stent;

one or more of the proximal apices of the second stent is positioned approximately on a third plane that is perpendicular to a longitudinal axis of the second stent, the third plane being offset from the first and second planes;

one or more of the proximal apices of the second stent is positioned approximately on a fourth plane that is perpendicular to a longitudinal axis of the second stent, the fourth plane being offset from the first, second, and third planes; and

the distal apices of the first stent are circumferentially offset from the proximal apices of the second stent.

2. The endoluminal prosthesis of claim 1, wherein the second stent comprises multiple, interconnected axially adjacent segments or rings.

3. The endoluminal prosthesis of claim 1, wherein the second stent is longer than the first stent.

4. The endoluminal prosthesis of claim 1, wherein the apices comprise at least one of a bend, a loop, an annulus, and a U-shaped bend.

5. The endoluminal prosthesis of claim 1, wherein the first and second stent are attached to the graft using sutures.

6. The endoluminal prosthesis of claim 5, wherein at least some of the sutures are radiopaque.

7. The endoluminal prosthesis of claim 1, further comprising one or more radiopaque markers supported by at least one of the graft, the first stent, and the second stent.

8. The endoluminal prosthesis of claim 1, wherein the first stent comprises an M-shaped pattern, and the second stent comprises a W-shaped pattern.

9. The endoluminal prosthesis of claim 8, wherein the first stent comprises struts between each of the apices, and the lengths of each strut is within 5%-10% of the length of every other strut of the first stent.

10. The endoluminal prosthesis of claim 1, wherein the second stent is formed from a continuous length of wire and comprises a plurality of axially adjacent, tubular stent segments.

11. An endoluminal prosthesis comprising:

a first support having a proximal end and a distal end;

a second support spaced apart from the first support having a proximal end and a distal end, the second support being located closer to a distal end of the prosthesis as compared to the first support; and

a cover that at least substantially covers the second support and at least a portion of the first support;

wherein;

at least a portion of each of the first and second supports is attached to the cover;

the first support comprises distal apices that are longitudinally and circumferentially offset as compared to proximal apices of the second support, the distal apices being interdigitated relative to the proximal apices of the second support.

12. The endoluminal prosthesis of claim 11, wherein the distal apices of the first support are configured such that a first distal apex of the first support has a first longitudinal length and a second distal apex has a second longitudinal length, the first longitudinal length being different than the second longitudinal length.

13. The endoluminal prosthesis of claim 11, wherein the proximal apices of the second support are configured such that a first proximal apex of the second support has a first longitudinal length and a second proximal apex has a second longitudinal length, the first longitudinal length being different than the second longitudinal length.

14. The endoluminal prosthesis of claim 11, wherein the distal apices of the first support are coupled to the sleeve via suture stitching.

15. The endoluminal prosthesis of claim 11, wherein the proximal apices of the second support are coupled to the sleeve via suture stitching.

16. A method of deploying an endoluminal prosthesis in vasculature, comprising:

inserting an endoluminal prosthesis within the vasculature, the endoluminal graft having a first support and a second support coupled to a sleeve, wherein the first support is coupled to a proximal end of the sleeve and extends longitudinally beyond the proximal end of the sleeve;

positioning the endoluminal prosthesis adjacent a vascular branch blood vessel by locating a proximal end of the second support adjacent the branch opening, the proximal end of the second support coinciding with the proximal end of the sleeve; and

expanding the endoluminal prosthesis;

wherein;

the first support spans the vessel branch to make contact with the vessel wall on the opposing side of the vessel branch;

one or more distal apices of the first support are longitudinally offset from other distal apices of the first support;

one or more distal apices of the second support are longitudinally offset from other distal apices of the second support; and

each of the distal apices of the second support is circumferentially offset from each of the proximal apices of the first support.

17. The method of deploying an endoluminal prosthesis of claim 16, wherein the adjacent proximal apices of the second support and the distal apices of the first support are interdigitated.