Low profile stent-graft attachment

• US 7,641,681 B2
• Filed: 12/28/2004
• Issued: 01/05/2010
• Est. Priority Date: 12/28/2004
• Status: Expired due to Fees

• Current Assignee: Lifeshield Sciences LLC (Acacia Research Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Quigley, Fergus, Sherry, John
• Primary Examiner(s): Ho; (Jackie) Tan-Uyen T.
• Assistant Examiner(s): Ryckman; Melissa
• Application Number:
  US11/025,826
• Publication Number:
  US 20060142840A1
• Time in Patent Office: 1,834 Days
• Field of Search: 623/1.13, 623/1.39, 623/1.53, 623/1.15, 623/1.34, 623/1.42, 623 144- 146, 623/1.32, 623/1.5, 87/5, 87/7, 87/13
• US Class Current: 623/1.13
• 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 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2210/0076 multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2230/0054 V-shaped

Abstract

A low profile, implantable prosthesis includes (a) a tubular graft including opposed open ends and having yarns in a textile pattern to define a textile wall having a luminal surface and an exterior surface; and (b) a tubular, radially extensible member including a portion arranged in a closed zig-zag pattern, the pattern having a series of angled bends at proximal and distal ends thereof, and longitudinally extending members having opposed proximal and distal ends, the distal ends being disposed from the angled bends of the proximal end; the longitudinally extending members having a plurality of detents for securing the yarns within the textile pattern at one of the opposed open ends, wherein the yarns of the textile patterns are securably disposed to the detents. The detents may be holes, inwardly extending notches, outwardly extending protuberances, or combinations thereof in the longitudinally extending members. The textile pattern of the graft may be a braided textile pattern, a woven textile pattern, a knitted textile pattern, and combinations thereof. Desirably, the zigzag portion of the radially extensible member is disposed beyond the open end of the graft. The radially extensible member may be a stent or may be an anchoring device for securing the prosthesis against the wall of a bodily lumen.

Claims

1. An implantable prosthesis comprising:

a tubular graft comprising opposed open ends and having yarns in a textile pattern to define a textile wall having a luminal surface and an exterior surface; and

a tubular, radially extensible member comprising a tubular portion arranged in an open-cell arrangement and longitudinally extending members having opposed proximal and distal ends, said proximal ends of said longitudinally extending members extending from the tubular portion, said distal ends of said longitudinally extending members being distal from said tubular portion, said longitudinally extending members having a plurality of detents securing said yarns within said textile pattern at one of said opposed open ends,

wherein said yarns of said textile patterns are securably engaged to said detents,

wherein said tubular portion of said radially extendible member is disposed beyond one of said open ends of said graft, and

wherein said longitudinally extending members are not in direct contact with to one another at any portion distal from said proximal ends of said longitudinally extending members extending from the tubular portion.

2. The prosthesis of claim 1, wherein said proximal ends of longitudinally extending members are thinner in diameter than said distal ends of longitudinally extending members.

3. The prosthesis of claim 1, wherein said yarns of said textile patterns are securably engaged to said detents without being sutured or stapled to said detents.

4. An implantable prosthesis comprising:

a tubular graft comprising opposed open ends and having yarns in a textile pattern to define a textile wall having a luminal surface and an exterior surface; and

a tubular, radially extensible member comprising a portion arranged in a closed zig-zag pattern, said zig-zag pattern having a series of angled bends at proximal and distal ends thereof, and longitudinally extending member having opposed proximal and distal ends, said proximal ends of said longitudinally extending members extending from the angled bends of said proximal end of zig-zag portion, said distal ends of said longitudinally extending members being distal from the angled bends of proximal end of said zig-zag portion;

said longitudinally extending members having a plurality of detents securing said yarns within said textile pattern at one of said opposed open ends, wherein said yarns of said textile patterns are securably engaged to said detents, wherein said zigzag portion of said radially extendible member is disposed beyond one of said open ends of said graft, and

wherein said longitudinally extending members are not in direct contact with to one another at any portion distal from the angled bends of said proximal ends of said zig-zag portion.

5. The prosthesis of claim 4, wherein said detents are holes in said longitudinally extending members.

6. The prosthesis of claim 4, wherein said textile pattern is selected from the group consisting of a braided textile pattern, a woven textile pattern, a knitted textile pattern, and combinations thereof.

7. The prosthesis of claim 4, wherein said detents are holes in said longitudinally extending members, said textile pattern is a braided textile pattern, and said yarns are extended through said holes.

8. The prosthesis of claim 4, wherein said proximal ends of longitudinally extending members are thinner in diameter than said distal ends of longitudinally extending members.

9. The prosthesis of claim 4, wherein said yarns of said textile patterns are securably engaged to said detents without being sutured or stapled to said detents.

10. An implantable prosthesis comprising:

a tubular graft comprising opposed open ends and having yarns in a textile pattern to define a textile wall having a luminal surface and an exterior surface;

a tubular, radially extensible member comprising a portion arranged in a closed zig-zag pattern, said zig-zag pattern having a series of angled bends at proximal and distal ends thereof, and longitudinally extending members having opposed proximal and distal ends, said proximal ends of said longitudinally extending members extending from the angled bends of said proximal end of said zig-zag portion, said distal ends of said longitudinally extending members being distal from the angled bends of said proximal end of said zig-zag portions;

said longitudinally extending members having a plurality of detents securing said yarns within said textile pattern at one of said opposed open ends; and

a tubular layer of polymeric material securably disposed over portions of said luminal surface of said graft,

wherein said yarns of said textile patterns are securably engaged to said detents,

wherein said longitudinally extending members are not in direct contact with to one another at any portion distal from the angled bends of said proximal end of said zig-zag portion,

wherein said zigzag portion of said radially extendible member is disposed beyond one of said open ends of said graft, and

wherein said tubular layer further includes an inverted portion securably disposed over portions of said exterior surface of said graft.

11. The prosthesis of claim 10, wherein said proximal ends of longitudinally extending members are thinner in diameter than said distal ends of longitudinally extending members.

12. The prosthesis of claim 10, wherein said yarns of said textile patterns are securably engaged to said detents without being sutured or stapled to said detents.

13. An implantable prosthesis comprising:

a tubular graft comprising opposed open ends and having yarns in a textile pattern to define a textile wall having a luminal surface and an exterior surface; and

a tubular, radially extensible member comprising a portion arranged in a closed zig-zag pattern, said zig-zag pattern having a series of angled bends at proximal and distal ends thereof, and longitudinally extending members having opposed proximal and distal ends, said proximal ends of said longitudinally extending members extending from the angled bends of said proximal end of said zig-zag portion, said distal ends being distal from the angled bends of said proximal end of said zig-zag portion;

said longitudinally extending members having a plurality of detents securing said yarns within said textile pattern at one said opposed open ends,

wherein said longitudinally extending members are not in direct contact with to one another at any portion distal from the angled bends of said proximal end of said zig-zag portion,

wherein said zigzag portion of said radially extendible member is disposed beyond one of the said open ends of said graft,

wherein said yarns of said textile patterns are securably integrated with said detents, and

wherein said detents are holes in said longitudinally extending members, said textile pattern is a braided textile pattern, and said yarns are extended through said holes.

14. The prosthesis of claim 13, wherein said detents are holes in said longitudinally extending members, said textile pattern is a woven textile pattern, and said yarns are extended through said holes.

15. The prosthesis of claim 13, wherein said detents are holes in said longitudinally extending members, said textile pattern is a knitted textile pattern, and said yarns are extended through said holes.

16. The prosthesis of claim 13, wherein said longitudinally extending members are substantially longitudinally straight members.

17. The prosthesis of claim 13, wherein said longitudinally extending members do not inter-engage one another.

18. The prosthesis of claim 13, wherein said longitudinally extending members are substantially parallel to one another.

19. The prosthesis of claim 13, wherein said proximal ends of longitudinally extending extending members are thinner in diameter than said distal ends of longitudinally extending members.

20. The prosthesis of claim 13, where said yarns are biocompatible yarns.

21. The prosthesis of claim 20, where said yarns are biocompatible yarns comprise a polymeric material selected from the group consisting of polyesters, polypropylenes, polyethylenes, polyurethanes, polynaphthalenes, polytetrafluoroethylenes, and combinations thereof.

22. The prosthesis of claim 13, further comprising a tubular layer of polymeric material securably disposed over portions of said luminal surface of said graft.

23. The prosthesis of claim 13, further comprising a tubular layer of polymeric material securably disposed over portions of said exterior surface of said graft.

24. The prosthesis of claim 13, further comprising:

a first tubular layer of polymeric material securably disposed over portions of said luminal surface of said graft; and

a second tubular layer of polymeric material securably disposed over portions of said exterior surface of said graft.

25. The prosthesis of claim 22, wherein said tubular layer further includes an inverted portion securably disposed over portions of said exterior surface of said graft.

26. The prosthesis of claim 22, wherein said tubular layer is selected from the group consisting of an extruded tube of said polymeric material, an extruded sheet of said polymeric material, a coating of said polymeric material, and combinations thereof.

27. The prosthesis of claim 23, wherein said tubular layer is selected from the group consisting of an extruded tube of said polymeric material, an extruded sheet of said polymeric material, a coating of said polymeric material, and combinations thereof.

28. The prosthesis of claim 24, wherein said first and second tubular layers are selected from the group consisting of an extruded tube of said polymeric material, an extruded sheet of said polymeric material, a coating of said polymeric material, and combinations thereof.

29. The prosthesis of claim 22, wherein said yarns are polytetrafluoroethylene yarns.

30. The prosthesis of claim 23, wherein said yarns are polytetrafluoroethylene yarns.

31. The prosthesis of claim 24, wherein said yarns are polytetrafluoroethylene yarns.

32. The prosthesis of claim 31, wherein said polymeric material selected from the group consisting of polytetrafluoroethylene, expanded polytetrafluoroethylene, and combinations thereof.

33. The prosthesis of claim 32, wherein said polymeric material selected from the group consisting of polytetrafluoroethylene, expanded polytetrafluoroethylene, and combinations thereof.

34. The prosthesis of claim 33, wherein said polymeric material selected from the group consisting of polytetrafluoroethylene, expanded polytetrafluoroethylene, and combinations thereof.

35. The prosthesis of claim 13, wherein said radially extensible member is a stent.

36. The prosthesis of claim 13, wherein said longitudinally extending members secure said prosthesis against a wall of a bodily lumen.

37. The prosthesis of claim 13, wherein said radially extensible member is an anchor device for securing said prosthesis against a wall of bodily lumen.

38. The prosthesis of claim 37, wherein said zig-zag portion is securable against a wall of a bodily lumen.

39. The prosthesis of claim 13, wherein said yarns of said textile patterns are securably integrated with said detents without sutured or stapled to said detents.