Endoluminal vascular prosthesis

• US 6,331,190 B1
• Filed: 01/14/2000
• Issued: 12/18/2001
• Est. Priority Date: 03/04/1998
• Status: Expired due to Fees

• Current Assignee: Endologix
• Original Assignee: Endologix
• Inventors: Shokoohi, Mehrdad M., Henson, Michael R., von Hoffmann, Gerard
• Primary Examiner(s): Milano, Michael J.
• Application Number:
  US09/483,411
• Time in Patent Office: 704 Days
• Field of Search: 623/1.15, 623/1.16, 623/1.22
• US Class Current: 623/1.22
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/86 Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/067 modular
• CPC Class Codes: A61F 2002/072 Encapsulated stents, e.g. wire or whole stent embedded in lining
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/828 Means for connecting a plurality of stents allowing flexibility of the whole structure
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• 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 2230/0054 V-shaped

Abstract

Disclosed is a tubular endoluminal vascular prosthesis, useful in treating, for example, an abdominal aortic aneurysm. The prosthesis comprises a self expandable wire support structure surrounded by a flexible tubular membrane. A delivery catheter and methods are also disclosed.

Claims

1. An endoluminal prosthesis, comprising:

a tubular wire support comprising at least first and second axially adjacent tubular segments joined by a connector extending therebetween, wherein the first and second tubular segments and the connector are formed from a single length of wire, and wherein each tubular segment comprises a series of proximal and distal bends, such that each proximal bend in the first tubular segment aligns with a distal bend in the second tubular segment to form a joint;

wherein each joint includes an eye.

2. The endoluminal prosthesis of claim 1, wherein the eye is a circular loop.

3. The endoluminal prosthesis of claim 2, wherein the eye is a double-looped circular eye.

4. The endoluminal prosthesis of claim 1, wherein the eye is a double-looped triangular eye.

5. An endoluminal prosthesis as in claim 1, comprising at least three segments and two connectors.

6. An endoluminal prosthesis as in claim 1, comprising at least five segments and four connectors.

7. An endoluminal prosthesis as in claim 1, wherein the wire in each segment comprises a series of strut segments connecting the proximal bends and distal bends to form a tubular segment wall.

8. An endoluminal prosthesis as in claim 7, wherein at least some of the strut segments are substantially linear.

9. An endoluminal prosthesis as in claim 7, wherein each segment comprises from about 4 proximal bends to about 12 proximal bends.

10. An endoluminal prosthesis as in claim 1, having at least a proximal segment, an intermediate segment and a distal segment, wherein the prosthesis is expandable from a reduced cross section to an expanded cross section.

11. An endoluminal prosthesis as in claim 10, wherein at least a portion of the proximal segment and distal segment is larger in cross section than the central segment when the prosthesis is in the expanded cross section.

12. An endoluminal prosthesis as in claim 1, further comprising a polymeric layer on the wire support.

13. An endoluminal prosthesis as in claim 12, wherein the layer comprises a tubular PTFE sleeve surrounding at least a central portion of the prosthesis.

14. An endoluminal prosthesis as in claim 1, wherein the first tubular segment has a different radial strength than the second tubular segment.

15. An endoluminal prosthesis as in claim 14, further comprising a third tubular segment, wherein at least one of the tubular segments has a different radial strength than the other two tubular segments.

16. An endoluminal prosthesis as in claim 15, wherein a proximal end of the prosthesis is self expandable to a greater diameter than a central region of the prosthesis.

17. An endoluminal prosthesis as in claim 13, wherein the sleeve further comprises at least one lateral perfusion port extending therethrough.

18. An endoluminal prosthesis as in claim 1, wherein the joint comprises a pivotable connection.

19. An endoluminal prosthesis as in claim 1, wherein the joint comprises a metal link.

20. An endoluminal prosthesis as in claim 1, wherein the joint comprises a suture.

21. An endoluminal prosthesis as in claim 1, wherein the prosthesis has an expansion ratio of at least about 1:

4.

22. An endoluminal prosthesis as in claim 21, wherein the prosthesis has an expansion ratio of at least about 1:

5.

23. An endoluminal prosthesis as in claim 12, wherein the prosthesis has an expanded diameter of at least about 20 mm in an unconstrained expansion, and the prosthesis is implantable using a catheter no greater than about 16 French.

24. A prosthesis as in claim 12, wherein the prosthesis has an expanded diameter of at least about 25 mm, and is implantable on a delivery device having a diameter of no more than about 16 French.

25. An endoluminal prosthesis, comprising:

a tubular wire support comprising at least first and second axially adjacent tubular segments joined by a connector extending therebetween, wherein the first and second tubular segments and the connector are formed from a single length of wire, and wherein each tubular segment comprises a series of proximal and distal bends, such that each proximal bend in the first tubular segment aligns with a distal bend in the second tubular segment to form a joint;

wherein each joint includes an eye in the form of a circular loop of wire.

26. The endoluminal prosthesis of claim 25, wherein the eye is a double-looped triangular eye.

27. An endoluminal prosthesis as in claim 25, comprising at least three segments and two connectors.

28. An endoluminal prosthesis as in claim 25, comprising at least five segments and four connectors.

29. An endoluminal prosthesis as in claim 25, wherein the wire in each segment comprises a series of strut segments connecting the proximal bends and distal bends to form a tubular segment wall.

30. An endoluminal prosthesis as in claim 29, wherein at least some of the strut segments are substantially linear.

31. An endoluminal prosthesis as in claim 29, wherein each segment comprises from about 4 proximal bends to about 12 proximal bends.

32. An endoluminal prosthesis as in claim 25, having at least a proximal segment, an intermediate segment and a distal segment, wherein the prosthesis is expandable from a reduced cross section to an expanded cross section.

33. An endoluminal prosthesis as in claim 32, wherein at least a portion of the proximal segment and distal segment is larger in cross section than the central segment when the prosthesis is in the expanded cross section.

34. An endoluminal prosthesis as in claim 25, further comprising a polymeric layer on the wire support.

35. An endoluminal prosthesis as in claim 34, wherein the layer comprises a tubular PTFE sleeve surrounding at least a central portion of the prosthesis.

36. An endoluminal prosthesis as in claim 25, wherein the first tubular segment has a different radial strength than the second tubular segment.

37. An endoluminal prosthesis as in claim 36, further comprising a third tubular segment, wherein at least one of the tubular segments has a different radial strength than the other two tubular segments.

38. An endoluminal prosthesis as in claim 37, wherein a proximal end of the prosthesis is self expandable to a greater diameter than a central region of the prosthesis.

39. An endoluminal prosthesis as in claim 35, wherein the sleeve further comprises at least one lateral perfusion port extending therethrough.

40. An endoluminal prosthesis as in claim 25, wherein the joint comprises a pivotable connection.

41. An endoluminal prosthesis as in claim 25, wherein the joint comprises a metal link.

42. An endoluminal prosthesis as in claim 25, wherein the joint comprises a suture.

43. An endoluminal prosthesis as in claim 25, wherein the prosthesis has an expansion ratio of at least about 1:

4.

44. An endoluminal prosthesis as in claim 43, wherein the prosthesis has an expansion ratio of at least about 1:

5.

45. An endoluminal prosthesis as in claim 34, wherein the prosthesis has an expanded diameter of at least about 20 mm in an unconstrained expansion, and the prosthesis is implantable using a catheter no greater than about 16 French.

46. A prosthesis as in claim 34, wherein the prosthesis has an expanded diameter of at least about 25 mm, and is implantable on a delivery device having a diameter of no more than about 16 French.