Stent Graft With Pins

• US 20090125096A1
• Filed: 11/12/2007
• Published: 05/14/2009
• Est. Priority Date: 11/12/2007
• Status: Abandoned Application

• Current Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Chu, Jack, Yang, Frank, Greenan, Trevor, Rust, Matthew, Cunniffe, Brendan
• Application Number:
  US11/938,642
• Publication Number:
  US 20090125096A1
• Time in Patent Office: Days
• US Class Current: 623/1.140
• 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 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/8483 Barbs
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/0054 V-shaped

Abstract

A stent graft with pins, a stent graft including a tubular graft having a perimeter and a central axis; at least one stent ring operably connected about the perimeter, the stent ring having a plurality of struts connected in a sinusoidal pattern, at least one of the plurality of struts having a hole; and a pin having a free end. The pin is secured in the hole with the free end directed outwardly from the central axis.

Claims

1. A stent graft comprising:

a tubular graft having a perimeter and a central axis;

at least one stent ring operably connected about the perimeter, the stent ring having a plurality of struts connected in a sinusoidal pattern, at least one of the plurality of struts having a hole; and

a pin having a free end;

wherein the pin is secured in the hole with the free end directed outwardly from the central axis.

2. The stent graft of claim 1 further comprising a plurality of stent rings connected in a diamond pattern.

3. The stent graft of claim 1 wherein the free end is a point.

4. The stent graft of claim 1 wherein the pin is secured in the hole with a method selected from the group consisting of soldering, brazing, welding, laser welding, and adhesive fixing.

5. The stent graft of claim 1 wherein the pin is secured in the hole with a method selected from the group consisting of snap fitting and friction fitting.

6. The stent graft of claim 1 wherein the pin has a head opposite the free end and a shaft between the head and the free end, and further comprising a keeper about the shaft securing the pin in the hole.

7. The stent graft of claim 1 wherein the pin has a head opposite the free end and a shaft between the head and the free end, and further comprising a protrusion about the shaft securing the pin in the hole.

8. The stent graft of claim 1 wherein the strut has a surface and the hole is oblique to the surface.

9. The stent graft of claim 1 wherein the pin has a head, a straight portion adjacent the head, and an angled portion adjacent the free end, and the straight portion is disposed in the hole.

10. The stent graft of claim 1 wherein the pin has a shaft adjacent the free end, further comprising barbs on the shaft.

11. The stent graft of claim 1 wherein at least one of the plurality of struts has a pin nodule, the hole being in the pin nodule.

12. The stent graft of claim 11 wherein the pin nodule is selected from the group consisting of widened pin nodules, uniform pin nodules, and crown stent nodules.

13. The stent graft of claim 11 wherein the pin nodule comprises a pin nodule extension and a pin nodule body, the pin nodule extension extending the at least one of the plurality of struts and being connected to the pin nodule body having the hole.

14. The stent graft of claim 1 wherein at least two adjacent struts of the plurality of struts have pin nodules, the pin nodules being axially staggered from each other along the two adjacent struts.

15. The stent graft of claim 1 wherein the pin and the at least one of the plurality of struts having the hole are made of different materials.

16. The stent graft of claim 1 wherein the pin and at least one of the plurality of struts having the hole are made of one material.

17. The stent graft of claim 1 wherein the pin is made of a material selected from the group consisting of stainless steel, shape memory alloy, and nickel-cobalt-chromium-molybdenum alloy.

18. The stent graft of claim 1 wherein the plurality of struts is made of a material selected from the group consisting of stainless steel, shape memory alloy, and nickel-cobalt-chromium-molybdenum alloy.

19. A stent ring comprising:

a stent ring having a central axis and a plurality of struts connected in a sinusoidal pattern, at least one of the plurality of struts having a hole; and

a pin having a free end;

wherein the pin is secured in the hole with the free end directed outwardly from the central axis.

20. The stent graft of claim 19 further comprising a plurality of stent rings connected in a diamond pattern.

21. The stent graft of claim 19 wherein the free end is a point.

22. The stent graft of claim 19 wherein the pin is secured in the hole with a method selected from the group consisting of soldering, brazing, welding, laser welding, and adhesive fixing.

23. The stent graft of claim 19 wherein the pin is secured in the hole with a method selected from the group consisting of snap fitting and friction fitting.

24. The stent graft of claim 19 wherein the pin has a head opposite the free end and a shaft between the head and the free end, and further comprising a keeper about the shaft securing the pin in the hole

25. The stent graft of claim 19 wherein the pin has a head opposite the free end and a shaft between the head and the free end, and further comprising a protrusion about the shaft securing the pin in the hole.

26. The stent graft of claim 19 wherein the strut has a surface and the hole is oblique to the surface.

27. The stent graft of claim 19 wherein the pin has a head, a straight portion adjacent the head, and an angled portion adjacent the free end, and the straight portion is disposed in the hole.

28. The stent graft of claim 19 wherein the pin has a shaft adjacent the free end, further comprising barbs on the shaft.

29. The stent graft of claim 19 wherein at least one of the plurality of struts has a pin nodule, the hole being in the pin nodule.

30. The stent graft of claim 29 wherein the pin nodule is selected from the group consisting of widened pin nodules, uniform pin nodules, and crown stent nodules.

31. The stent graft of claim 29 wherein the pin nodule comprises a pin nodule extension and a pin nodule body, the pin nodule extension extending the at least one of the plurality of struts and being connected to the pin nodule body having the hole.

32. The stent graft of claim 19 wherein at least two adjacent struts of the plurality of struts have pin nodules, the pin nodules being axially staggered from each other along the two adjacent struts.

33. The stent graft of claim 19 wherein the pin and at least one of the plurality of struts having the hole are made of different materials.

34. The stent graft of claim 19 wherein the pin and at least one of the plurality of struts having the hole are made of one material.

35. The stent graft of claim 19 wherein the pin is made of a material selected from the group consisting of stainless steel, shape memory alloy, and nickel-cobalt-chromium-molybdenum alloy.

36. The stent graft of claim 19 wherein the plurality of struts is made of a material selected from the group consisting of stainless steel, shape memory alloy, and nickel-cobalt-chromium-molybdenum alloy.

37. A stent ring system comprising:

a stent ring having a central axis and a plurality of struts connected in a sinusoidal pattern, at least one of the plurality of struts having a hole;

means for piercing a vessel wall, the piercing means having a free end; and

means for securing the piercing means in the hole with the free end directed outwardly from the central axis.

38. The method of claim 37 further comprising means for retaining the piercing means in the vessel wall.

39. A method of stent ring fabrication comprising:

providing a stent ring having a central axis and a plurality of struts connected in a sinusoidal pattern, at least one of the plurality of struts having a hole;

providing a pin having a free end;

inserting the pin in the hole with the free end directed outwardly from the central axis; and

securing the pin in the hole.

40. The method of claim 39 wherein the providing a stent ring comprises laser cutting the stent ring from tube stock.

41. The method of claim 39 wherein the securing comprises securing the pin in the hole by a method selected from the group consisting of soldering, brazing, welding, laser welding, and adhesive fixing.

42. The method of claim 39 wherein the securing comprises securing the pin in the hole by a method selected from the group consisting of snap fitting and friction fitting.

43. The method of claim 39 further comprising sharpening the free end.