Endoluminal prosthesis with interconnectable modules

• US 20050113905A1
• Filed: 10/08/2004
• Published: 05/26/2005
• Est. Priority Date: 10/10/2003
• Status: Abandoned Application

• Current Assignee: Cleveland Clinic Foundation
• Original Assignee: Cleveland Clinic Foundation
• Inventors: Greenberg, Roy K., West, Karl
• Application Number:
  US10/962,001
• Publication Number:
  US 20050113905A1
• Time in Patent Office: Days
• US Class Current: 623/1.160
• CPC Class Codes: A61F 2/07 Stent-grafts
• 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 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/954 for placing stents or stent-grafts in a bifurcation
• 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 2002/30331 made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2002/821 Ostial stents
• CPC Class Codes: A61F 2002/828 Means for connecting a plurality of stents allowing flexibility of the whole structure
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• 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 2250/0007 for adjusting length

Abstract

A modular endoluminal prosthesis includes a first prosthetic module (40) having an opening at one end (41) and an internal surface (46), and a second prosthetic module (50) having an opening at one end (43) and an external surface (48). The first and second modules (40, 50) are connected by inserting the one end (43) of the second module (50) into the one end (41) of the first module (40). Either the internal surface (46) or the external surface (48) comprises at least one projection (42 or 44) and the other of the internal surface or the external surface comprises at least one surface feature (42 or 44) which engages the at least one projection (42 or 44) when the modules (40, 50) are connected.

Claims

1. A modular endoluminal prosthesis, comprising:

a first prosthetic module having an opening at one end and an internal surface; and

a second prosthetic module having an opening at one end and an external surface;

wherein the first and second modules are connected by inserting the one end of the second module into the one end of the first module, and wherein either the internal surface or the external surface comprises at least one projection and wherein the other of the internal surface or the external surface comprises at least one surface feature which engages the at least one projection when the modules are connected.

2. The prosthesis of claim 1, wherein the at least one projection is a first ridge.

3. The prosthesis of claim 2, wherein the at least one surface feature is a second ridge.

4. The prosthesis of claim 3, wherein the first ridge at least substantially complements the second ridge.

5. The prosthesis of claim 1, wherein the at least one projection is a first helical ridge.

6. The prosthesis of claim 5, wherein the at least one surface feature is a second helical ridge.

7. The prosthesis of claim 6, wherein the first helical ridge at least substantially complements the second helical ridge.

8. The prosthesis of claim 7, wherein the first helical ridge and the second helical ridge each have a pitch of at least about 1 mm.

9. The prosthesis of claim 8, wherein the first helical ridge and the second helical ridge each have a pitch of at least about 2 mm.

10. The prosthesis of claim 1, wherein the at least one projection is a first plurality of substantially parallel helical ridges.

11. The prosthesis of claim 10, wherein the at least one surface feature is a second plurality of substantially parallel helical ridges.

12. The prosthesis of claim 11, wherein the first plurality of substantially parallel helical ridges at least substantially complements the second plurality of substantially parallel helical ridges.

13. The prosthesis of claim 1, wherein the at least one projection is a first plurality of substantially parallel annular ridges.

14. The prosthesis of claim 13, wherein the at least one surface feature is a second plurality of substantially parallel annular ridges.

15. The prosthesis of claim 14, wherein the first plurality of substantially parallel helical ridges at least substantially complements the second plurality of substantially parallel annular ridges.

16. The prosthesis of claim 15, wherein the annular ridges of both the first plurality of substantially parallel helical ridges and the second plurality of substantially parallel annular ridges are spaced so as to have at least about 4 parallel ridges per centimeter.

17. The prosthesis of claim 15, wherein the annular ridges of both the first plurality of substantially parallel helical ridges and the second plurality of substantially parallel annular ridges are spaced so as to have at least about 8 parallel ridges per centimeter.

18. The prosthesis of claim 15, wherein the annular ridges of both the first plurality of substantially parallel helical ridges and the second plurality of substantially parallel annular ridges have a height of at least about 0.1 mm.

19. The prosthesis of claim 1, wherein the first prosthetic module is a bifurcated prosthetic module comprising first and second legs and wherein the first leg comprises the one end of the first prosthetic module.

20. The prosthesis of claim 19, wherein the second prosthetic module is an extension module sized to form a telescoping connection with the first leg.

21. The prosthesis of claim 20, further comprising a third prosthetic module, wherein an external surface of the third prosthetic module comprises at least one projection and wherein an internal surface of the second leg comprises at least one surface feature which engages the at least one projection of the third prosthetic module when the third prosthetic module forms a telescoping connection with the second leg.

22. The prosthesis of claim 1, wherein the first prosthetic module comprises a side branch which comprises the one end of the first prosthetic module.

23. The prosthesis of claim 22, wherein the second prosthetic module is a branch extension prosthesis sized to form a telescoping connection with the side branch.

24. The prosthesis of claim 1, wherein the first prosthetic module comprises a prosthetic side branch in fluid communication with a prosthetic trunk.

25. The prosthesis of claim 24, wherein the second prosthetic module is a branch extension prosthesis sized to form a telescoping connection with the side branch.

26. The prosthesis of claim 1, further comprising at least one external stent disposed externally on the first prosthetic module.

27. The prosthesis of claim 1, further comprising at least one internal stent disposed internally on the second prosthetic module.

28. The prosthesis of claim 27, further comprising at least one external stent disposed externally on the first prosthetic module.

29. The prosthesis of claim 28, wherein the at least one internal stent is disposed at least partially inside the at least one external stent.

30. The prosthesis of claim 1, wherein the first prosthetic module and the second prosthetic module overlap more than about 1 mm.

31. The prosthesis of claim 30, wherein the first prosthetic module and the second prosthetic module overlap from about 2 mm to about 40 mm.

32. The prosthesis of claim 31, wherein the first prosthetic module and the second prosthetic module overlap from about 5 mm to about 25 mm.

33. The prosthesis of claim 32, wherein the first prosthetic module and the second prosthetic module overlap from about 10 mm to about 20 mm.

34. The prosthesis of claim 1, wherein both the at least one projection and the at least one surface feature are crimps.

35. The prosthesis of claim 1, wherein both the at least one projection and the at least one surface feature are corrugations.

40. The prosthesis of claim 1, wherein a telescoping connection between the first prosthetic module and the second prosthetic module is capable of resisting a pull-out force of greater than 4 Newtons when the prosthesis is pressurized to 60 mmHg and immersed in 37°

C. water.

41. The prosthesis of claim 1, wherein the telescoping connection between the first prosthetic module and the second prosthetic module is capable of resisting a pull-out force of greater than 7 Newtons when the prosthesis is pressurized to 60 mmHg and immersed in 37°

C. water.

42. The prosthesis of claim 1, wherein the telescoping connection between the first prosthetic module and the second prosthetic module is capable of resisting a pull-out force of greater than 10 Newtons when the prosthesis is pressurized to 60 mmHg and immersed in 37°

C. water.

36. A method of manufacturing prosthetic endoluminal modules for interconnection, comprising:

providing a first prosthetic module having an opening at one end and an internal surface; and

providing a second prosthetic module having an opening at one end and an external surface;

forming at least one projection on either the internal surface or the external surface;

forming at least one surface feature on the other of the internal surface or the external surface so that the at least one surface feature is formed to engage the at least one projection when the modules are connected.

37. The method of claim 36, further comprising attaching a stent externally on the first prosthetic module.

38. The method of claim 36, further comprising attaching a stent internally on the second prosthetic module.

39. The method of claim 38, further comprising attaching a stent to the internal surface of the first prosthetic module.

43. A modular endoluminal prosthesis, comprising:

a first prosthetic module;

a second prosthetic module;

a telescoping interconnection between the first prosthetic module and the second prosthetic module, wherein the telescoping interconnection is capable of resisting a pull-out force of greater than 4 Newtons when the modular endoluminal prosthesis is pressurized to 60 mmHg and immersed in 37°

C. water.

44. The prosthesis of claim 43, wherein the telescoping interconnection is capable of resisting a pull-out force of greater than 7 Newtons when the prosthesis is pressurized to 60 mmHg and immersed in 37°

C. water.

45. The prosthesis of claim 44, wherein the telescoping interconnection is capable of resisting a pull-out force of greater than 10 Newtons when the prosthesis is pressurized to 60 mmHg and immersed in 37°

C. water.

46. A method of manufacturing endoluminal prosthetic modules for interconnection, comprising:

providing at least two endoluminal prosthetic modules which are sized and shaped so that they are suitable for interconnection to each other;

wrapping at least one filament around each of the endoluminal prosthetic modules; and

heating at least a portion of each prosthesis which is adjacent to the at least one filament.

47. The method of claim 46, wherein wrapping at least one filament around said prostheses further comprises wrapping said at least one filament helically around each of said prostheses.

48. The method of claim 46, wherein wrapping at least one filament around said prostheses further comprises wrapping said at least one filament annularly around each of said prostheses.

49. A method of assembling a modular endoluminal prosthesis, comprising:

providing a first prosthetic module having an opening at one end and an internal surface;

providing a second prosthetic module having an opening at one end and an external surface, wherein either the internal surface or the external surface comprises at least one projection and wherein the other of the internal surface or the external surface comprises at least one surface feature capable of engaging the at least one projection; and

inserting the one end of the second module into the one end of the first module so that the at least one projection engages the at least one surface feature.

50. An endoluminal prosthesis having interconnectable modules, comprising:

a first prosthetic module having an internal surface at one end, the internal surface comprising circumferential ridges; and

a second prosthetic module having an external surface at one end comprising circumferential ridges, at least some of which engage at least some of the circumferential ridges of the internal surface when the one end of the second prosthetic module is inserted into the one end of the first prosthetic module, to thereby provide an interlocking connection between the first prosthetic module and the second prosthetic module.