Endoluminal Prosthesis

• US 20080114441A1
• Filed: 11/14/2006
• Published: 05/15/2008
• Est. Priority Date: 11/14/2006
• Status: Active Grant

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Yang, Frank, Greenan, Trevor, Rust, Matthew
• Granted Patent: US 7,615,072 B2
• Time in Patent Office: Days
• US Class Current: 623/1.13
• 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 2/915 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 2002/91508 the meander having a difference in amplitude along the band
• 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 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/0054 V-shaped

Abstract

An endoluminal prosthesis including a tubular graft having a proximal end and a distal end; a suprarenal spring stent operably connected to the proximal end, the suprarenal spring stent having suprarenal positive apices and suprarenal negative apices connected in a sinusoidal ring pattern by suprarenal struts; and a sealing spring stent operably connected to the tubular graft, the sealing spring stent having sealing positive apices, sealing negative apices, and intermediate sealing negative apices connected in a ring pattern, the sealing negative apices alternating with the intermediate sealing negative apices between adjacent sealing positive apices, the sealing positive apices being connected to the sealing negative apices by sealing struts, and the sealing positive apices being connected to the intermediate sealing negative apices by intermediate sealing struts. The suprarenal positive apices are axially aligned with the intermediate sealing negative apices.

Claims

13. An endoluminal prosthesis comprising:

a tubular graft having a proximal end and a distal end;

a suprarenal spring stent operably connected to the proximal end, the suprarenal spring stent having suprarenal positive apices and suprarenal negative apices connected in a sinusoidal ring pattern by suprarenal struts; and

body spring stents operably connected to the tubular graft, each of the body spring stents having body positive apices, body intermediate negative apices, body intermediate positive apices, and body negative apices, connected in a ring pattern;

wherein body struts connect the body negative apices to the body positive apices, first intermediate body struts connect the body positive apices to the body intermediate negative apices, second intermediate body struts connect the body intermediate negative apices to the body intermediate positive apices, and third intermediate body struts connect the body intermediate positive apices to the body negative apices.

14. The endoluminal prosthesis of claim 13 wherein the body positive apices of one of the body spring stents are axially aligned with the body positive apices of an adjacent one of the body spring stents.

15. The endoluminal prosthesis of claim 13 wherein:

the tubular graft has a first iliac leg and a second iliac leg at the distal end, and an iliac bifurcation between the first iliac leg and the second iliac leg; and

one of the body positive apices is axially aligned with the iliac bifurcation.

16. The endoluminal prosthesis of claim 15 further comprising:

first iliac spring stents operably connected to the first iliac leg, the first iliac spring stents having first iliac positive apices and first iliac negative apices connected in a sinusoidal ring pattern by first iliac struts; and

second iliac spring stents operably connected to the second iliac leg, the second iliac spring stents having second iliac positive apices and second iliac negative apices connected in a sinusoidal ring pattern by second iliac struts;

wherein the first iliac positive apices are circumferentially offset from the second iliac positive apices.

17. The endoluminal prosthesis of claim 15 further comprising:

first iliac spring stents operably connected to the first iliac leg, the first iliac spring stents having first iliac positive apices and first iliac negative apices connected in a sinusoidal ring pattern by first iliac struts; and

second iliac spring stents operably connected to the second iliac leg, the second iliac spring stents having second iliac positive apices and second iliac negative apices connected in a sinusoidal ring pattern by second iliac struts;

wherein deployed diameters of the first iliac leg and the second iliac leg are unequal, and unrestrained spring diameters of the first iliac spring stents and the second iliac spring stents are approximately equal.

18. The endoluminal prosthesis of claim 17 wherein the unrestrained spring diameter is selected to provide a desired radial force on the larger of the first iliac leg and the second iliac leg.

19. The endoluminal prosthesis of claim 13 wherein:

the tubular graft has a second iliac leg and a second iliac leg at the distal end, and an iliac bifurcation between the second iliac leg and the second iliac leg; and

one of the body intermediate positive apices is axially aligned with the iliac bifurcation.

20. The endoluminal prosthesis of claim 13 further comprising:

a sealing spring stent operably connected to the tubular graft, the sealing spring stent having sealing positive apices, sealing negative apices, and intermediate sealing negative apices connected in a ring pattern, the sealing negative apices alternating with the intermediate sealing negative apices between adjacent sealing positive apices, the sealing positive apices being connected to the sealing negative apices by sealing struts, and the sealing positive apices being connected to the intermediate sealing negative apices by intermediate sealing struts;

wherein the suprarenal positive apices are axially aligned with the intermediate sealing negative apices.

21. The endoluminal prosthesis of claim 20 wherein the suprarenal negative apices are circumferentially offset from the sealing positive apices.

22. The endoluminal prosthesis of claim 20 wherein the suprarenal negative apices are axially aligned with the sealing negative apices.

23. The endoluminal prosthesis of claim 20 wherein the intermediate sealing negative apices are axially aligned with the body positive apices.

24. The endoluminal prosthesis of claim 20 wherein the sealing negative apices are axially aligned with the body intermediate positive apices.

25. An endoluminal prosthesis comprising:

a tubular graft having a proximal end and a distal end, the tubular graft having a first iliac leg and a second iliac leg at the distal end, and an iliac bifurcation between the first iliac leg and the second iliac leg;

a suprarenal spring stent operably connected to the proximal end, the suprarenal spring stent having suprarenal positive apices and suprarenal negative apices connected in a sinusoidal ring pattern by suprarenal struts; and

body spring stents operably connected to the tubular graft, each of the body spring stents having body positive apices and body negative apices connected in a ring pattern with body struts;

wherein one of the body positive apices is axially aligned with the iliac bifurcation.

1. An endoluminal prosthesis comprising:

a tubular graft having a proximal end and a distal end;

a suprarenal spring stent operably connected to the proximal end, the suprarenal spring stent having suprarenal positive apices and suprarenal negative apices connected in a sinusoidal ring pattern by suprarenal struts; and

a sealing spring stent operably connected to the tubular graft, the sealing spring stent having sealing positive apices, sealing negative apices, and intermediate sealing negative apices connected in a ring pattern, the sealing negative apices alternating with the intermediate sealing negative apices between adjacent sealing positive apices, the sealing positive apices being connected to the sealing negative apices by sealing struts, and the sealing positive apices being connected to the intermediate sealing negative apices by intermediate sealing struts;

wherein the suprarenal positive apices are axially aligned with the intermediate sealing negative apices.

3. The endoluminal prosthesis of claim 1 wherein the suprarenal negative apices are axially aligned with the sealing negative apices.

4. The endoluminal prosthesis of claim 1 further comprising:

body spring stents operably connected to the tubular graft, each of the body spring stents having body positive apices, body intermediate negative apices, body intermediate positive apices, and body negative apices, connected in a ring pattern;

wherein body struts connect the body negative apices to the body positive apices, first intermediate body struts connect the body positive apices to the body intermediate negative apices, second intermediate body struts connect the body intermediate negative apices to the body intermediate positive apices, and third intermediate body struts connect the body intermediate positive apices to the body negative apices.

5. The endoluminal prosthesis of claim 4 wherein the intermediate sealing negative apices are axially aligned with the body positive apices.

6. The endoluminal prosthesis of claim 4 wherein the sealing negative apices are axially aligned with the body intermediate positive apices.

7. The endoluminal prosthesis of claim 4 wherein the body positive apices of one of the body spring stents are axially aligned with the body positive apices of an adjacent one of the body spring stents.

8. The endoluminal prosthesis of claim 4 wherein:

the tubular graft has a first iliac leg and a second iliac leg at the distal end, and an iliac bifurcation between the first iliac leg and the second iliac leg; and

one of the body positive apices is axially aligned with the iliac bifurcation.

9. The endoluminal prosthesis of claim 8 further comprising:

first iliac spring stents operably connected to the first iliac leg, the first iliac spring stents having first iliac positive apices and first iliac negative apices connected in a sinusoidal ring pattern by first iliac struts; and

second iliac spring stents operably connected to the second iliac leg, the second iliac spring stents having second iliac positive apices and second iliac negative apices connected in a sinusoidal ring pattern by second iliac struts;

wherein the first iliac positive apices are circumferentially offset from the second iliac positive apices.

10. The endoluminal prosthesis of claim 8 further comprising:

first iliac spring stents operably connected to the first iliac leg, the first iliac spring stents having first iliac positive apices and first iliac negative apices connected in a sinusoidal ring pattern by first iliac struts; and

second iliac spring stents operably connected to the second iliac leg, the second iliac spring stents having second iliac positive apices and second iliac negative apices connected in a sinusoidal ring pattern by second iliac struts;

wherein deployed diameters of the first iliac leg and the second iliac leg are unequal, and unrestrained spring diameters of the first iliac spring stents and the second iliac spring stents are approximately equal.

11. The endoluminal prosthesis of claim 10 wherein the unrestrained spring diameter is selected to provide a desired radial force on the larger of the first iliac leg and the second iliac leg.

12. The endoluminal prosthesis of claim 4 wherein:

the tubular graft has a second iliac leg and a second iliac leg at the distal end, and an iliac bifurcation between the second iliac leg and the second iliac leg; and

one of the body intermediate positive apices is axially aligned with the iliac bifurcation.

26. The endoluminal prosthesis of claim 25 further comprising:

first iliac spring stents operably connected to the first iliac leg, the first iliac spring stents having first iliac positive apices and first iliac negative apices connected in a sinusoidal ring pattern by first iliac struts; and

second iliac spring stents operably connected to the second iliac leg, the second iliac spring stents having second iliac positive apices and second iliac negative apices connected in a sinusoidal ring pattern by second iliac struts;

wherein the first iliac positive apices are circumferentially offset from the second iliac positive apices.

27. The endoluminal prosthesis of claim 25 further comprising:

first iliac spring stents operably connected to the first iliac leg, the first iliac spring stents having first iliac positive apices and first iliac negative apices connected in a sinusoidal ring pattern by first iliac struts; and

second iliac spring stents operably connected to the second iliac leg, the second iliac spring stents having second iliac positive apices and second iliac negative apices connected in a sinusoidal ring pattern by second iliac struts;

wherein deployed diameters of the first iliac leg and the second iliac leg are unequal, and unrestrained spring diameters of the first iliac spring stents and the second iliac spring stents are approximately equal.

28. The endoluminal prosthesis of claim 27 wherein the unrestrained spring diameter is selected to provide a desired radial force on the larger of the first iliac leg and the second iliac leg.

29. The endoluminal prosthesis of claim 28 wherein the body positive apices of one of the body spring stents are axially aligned with the body positive apices of an adjacent one of the body spring stents.

30. The endoluminal prosthesis of claim 28 further comprising:

a sealing spring stent operably connected to the tubular graft, the sealing spring stent having sealing positive apices, sealing negative apices, and intermediate sealing negative apices connected in a ring pattern, the sealing negative apices alternating with the intermediate sealing negative apices between adjacent sealing positive apices, the sealing positive apices being connected to the sealing negative apices by sealing struts, and the sealing positive apices being connected to the intermediate sealing negative apices by intermediate sealing struts;

wherein the suprarenal positive apices are axially aligned with the intermediate sealing negative apices.

31. The endoluminal prosthesis of claim 30 wherein the suprarenal negative apices are circumferentially offset from the sealing positive apices.

32. The endoluminal prosthesis of claim 30 wherein the suprarenal negative apices are axially aligned with the sealing negative apices.

33. The endoluminal prosthesis of claim 30 wherein the intermediate sealing negative apices are axially aligned with the body positive apices.

34. The endoluminal prosthesis of claim 30 wherein the sealing negative apices are axially aligned with the body intermediate positive apices.

28-1. The endoluminal prosthesis of claim 25, the body spring stents further comprising body intermediate negative apices, body intermediate positive apices

wherein the body struts connect the body negative apices to the body positive apices, first intermediate body struts connect the body positive apices to the body intermediate negative apices, second intermediate body struts connect the body intermediate negative apices to the body intermediate positive apices, and third intermediate body struts connect the body intermediate positive apices to the body negative apices, in a ring pattern.

35. An endoluminal prosthesis comprising:

a tubular graft having a proximal end;

a suprarenal spring stent operably connected to the proximal end; and

a sealing M spring stent operably connected to the tubular graft, the sealing M spring stent having M segments connected in a ring;

wherein the sealing M spring stent nests with the suprarenal spring stent.

2. The endoluminal prosthesis of claim 1 wherein the suprarenal negative apices are circumferentially offset from the sealing positive apices.

36. The endoluminal prosthesis of claim 35 wherein each of the M segments comprises:

a first sealing negative apex connected to a first sealing positive apex by a first sealing strut;

an intermediate sealing negative apex connected to the first sealing positive apex by a first intermediate sealing strut;

a second sealing positive apex connected to the intermediate sealing negative apex by a second intermediate sealing strut; and

a second sealing negative apex connected to the second sealing positive apex by a second sealing strut.

36-2. The endoluminal prosthesis of claim 35 wherein each of the M segments comprises:

a first sealing negative apex connected to a first sealing positive apex by a first sealing strut;

a first intermediate sealing negative apex connected to the first sealing positive apex by a first intermediate sealing strut;

an intermediate sealing positive apex connected to the first intermediate sealing negative apex by a second intermediate sealing strut;

a second intermediate sealing negative apex connected to the intermediate sealing positive apex by a third intermediate sealing strut;

a second sealing positive apex connected to the second intermediate sealing negative apex by a fourth intermediate sealing strut; and

a second negative apex connected to the second sealing positive apex by a second sealing strut.

37. An endoluminal prosthesis comprising:

a tubular graft having a proximal end;

a suprarenal spring stent operably connected to the proximal end; and

modified M body spring stents operably connected to the tubular graft, each of the modified M body spring stents having modified M segments connected in a ring.

38. The endoluminal prosthesis of claim 37 wherein each of the modified M segments comprises:

a first body negative apex connected to a body positive apex by a body strut;

an intermediate body negative apex connected to the body positive apex by a first intermediate body strut;

an intermediate body positive apex connected to the intermediate body negative apex by a second intermediate body strut; and

a second body negative apex connected to the intermediate body positive apex by a third intermediate body strut.

39. The endoluminal prosthesis of claim 37 wherein each of the modified M segments comprises:

a first body negative apex connected to a body positive apex by a body strut;

a first intermediate body negative apex connected to the body positive apex by a first intermediate body strut;

a first intermediate body positive apex connected to the first intermediate body negative apex by a second intermediate body strut;

a second intermediate body negative apex connected to the first intermediate body positive apex by a third intermediate body strut;

a second intermediate body positive apex connected to the second intermediate body negative apex by a fourth intermediate body strut; and

a second body negative apex connected to the second intermediate body positive apex by a fifth intermediate body strut.