Stent graft with branch leg

• US 20020058986A1
• Filed: 01/08/2002
• Published: 05/16/2002
• Est. Priority Date: 11/16/2000
• Status: Active Grant

• Current Assignee: Cardinal Health Switzerland 515 GmbH (Cardinal Health, Inc.)
• Original Assignee: Cordis Corporation (Cardinal Health, Inc.)
• Inventors: Solovay, Kenneth S., Ramer, Marc, Landau, George D.
• Granted Patent: US 7,314,483 B2
• Time in Patent Office: Days
• US Class Current: 623/1.13
• CPC Class Codes: A61B 17/064 Surgical staples, i.e. penetrating the tissue
• CPC Class Codes: A61B 17/0682 for applying U-shaped staples or clamps, e.g. without a forming anvil
• CPC Class Codes: A61F 2/064 with special features to facilitate anastomotic coupling anastomosis of natural blood vessels A61B17/11
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• 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 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• 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 2002/825 having longitudinal struts
• CPC Class Codes: A61F 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91541 Adjacent bands are arranged out of phase
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2220/0066 stapled
• 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 2230/001 : Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: A61F 2230/0013 : Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
• CPC Class Codes: A61F 2230/005 : Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0054 : V-shaped
• CPC Class Codes: A61F 2230/0067 : conical
• CPC Class Codes: A61F 2230/0078 : hyperboloidal
• CPC Class Codes: A61F 2250/006 : modular

Abstract

The present invention is directed to a system, apparatus, and method for treating, repairing, and/or replacing an aneurysm, preferably an aortic aneurysm, and most preferably, an abdominal aortic aneurysm. The systems, devices, and methods of the present invention include a first prosthesis or stent gasket, and at least one second prosthesis for bypassing the aneurysm. In preferred embodiments, the second prosthesis includes a branch leg that may be disposed and anchored in an either a cross artery or a downstream artery to facilitate fluid flow. In other preferred embodiments, at least one third prosthesis is provided for establishing a fluid flow channel through a second diseased artery to bypass an aneurysm disposed therein. In accordance with the invention, the first artery may be the abdominal aorta and the second artery may be an iliac artery.

Claims

1. A system for bypassing multiple aneurysms comprising a first prosthesis, at least two second prostheses communicating with the first prosthesis, and at least two third prostheses communicating with respective second prostheses;

each of the second prostheses being configured to bypass a first aneurysm and to extend into an artery downstream of the first aneurysm, and a first one of the third prostheses being matingly engaged with a first one of the second prostheses and being configured to provide a fluid flow path in a second artery disposed downstream from the first artery and to bypass a second aneurysm, the first one of the third prostheses being configured to provide a fluid flow path through a first common iliac artery and the first one of the third prostheses further including a branch leg configured to create a first fluid flow path from the first one of the third prostheses into a first external iliac artery.

2. The system of claim 1 further comprising a second one of the third prostheses matingly engaged with a second one of the second prostheses, wherein the second one of the third prosthesis is configured to create a second fluid flow path through a second common iliac artery to a second external iliac artery.

3. The system of claim 2 wherein the at least two second prostheses each comprise a stent and a graft material communicating with the stent.

4. The system of claim 3 wherein the stent and graft material defines a fluid flow path through the second prostheses.

5. The system of claim 4 wherein the fluid flow path is a channel that bypasses the first aneurysm.

6. The system of claim 1 wherein the first one of the third prostheses comprises a stent defining a matrix having an upstream portion, a downstream portion and an intermediate portion, the intermediate portion including an aperture and a plurality of branched stent struts extending in a direction away from a plane including a longitudinal axis of said stent, and a graft material communicating with the matrix.

7. The system of claim 6 wherein the branch leg comprises the plurality of struts extending from the first one of the third prosthesis and a graft material communicating with the struts.

8. The system of claim 7 wherein said plurality of branched stent struts and graft material define the first fluid flow path from the first one of the third prostheses into the first external iliac artery.

9. The system of claim 8 wherein the branch leg is integrally formed with the third prosthesis.

10. The system of claim 9 wherein the branch leg is biased in a position substantially perpendicular to a longitudinal axis of said third prosthesis.

11. The system of claim 10 wherein a junction of the branch leg and the second prosthesis is disposed adjacent to an upstream end of the second prosthesis.

13. The prosthesis of claim 12 wherein the stent is comprised of a material exhibiting superelastic properties at body temperature.

14. The prosthesis of claim 13 wherein the stent is comprised of nickel-titanium alloy.

15. The prosthesis of claim 12 wherein the aperture is disposed in the intermediate portion of the matrix.

16. The prosthesis of claim 12 wherein the aperture is disposed in the downstream portion of the matrix.

17. The prosthesis of claim 12 wherein the aperture is disposed in the upstream portion of the matrix.

18. The prosthesis of claim 12 wherein the branched stent struts surround the aperture and are disposed adjacent to a perimeter of the aperture.

19. The prosthesis of claim 12 wherein said branched stent struts and the graft material comprise a branch leg.

20. The prosthesis of claim 19 wherein the branch leg is covered with foam.

21. The prosthesis of claim 19 wherein the branch leg is integrally formed with the stent.

22. The prosthesis of claim 19 wherein the branch leg is biased in a position substantially perpendicular to a longitudinal axis of the stent.

24. The method of claim 23 further comprising anchoring a downstream end of the second prosthesis in an artery downstream of the aneurysm.

25. The method of claim 23 further comprising anchoring a downstream end of the branch leg in the second artery.

12. A prosthesis for splitting a fluid flow path comprising:

a stent defining a matrix having an upstream portion, a downstream portion and an intermediate portion disposed between the upstream and downstream portion, the intermediate portion including an aperture and a plurality of branched stent struts extending from the intermediate portion in a direction away from a plane including a longitudinal axis of said stent, and a graft material communicating with the matrix.

23. A method for bypassing an aneurysm downstream of a junction between a first artery and a second artery comprising positioning a first prosthesis in a first section of the first artery;

engaging at least one second prosthesis with the first prosthesis, said second prosthesis forming a fluid flow path that bypasses the aneurysm; and

positioning a branch leg of the second prosthesis in the second artery, the branch leg forming a fluid flow path from the second prosthesis to the second artery.

26. A method for bypassing aneurysms disposed in an arterial system comprising:

positioning a first prosthesis in a first section of a first artery;

engaging at least one second prosthesis with the first prosthesis, said second prosthesis forming a fluid flow path that bypasses an aneurysm in the first artery;

engaging a third prosthesis with a downstream end of the at least one second prosthesis;

positioning a branch leg of the third prosthesis in first branch of the second artery, the branch leg forming a fluid flow path from the third prosthesis to the first branch of the second artery that bypasses an aneurysm in the second artery; and

positioning the third prosthesis in a second branch of the second artery, the third prosthesis forming a fluid flow path that bypasses the aneurysm in the second artery.