Endovascular prosthesis accommodating torsional and longitudinal displacements and methods of use

• US 6,325,823 B1
• Filed: 10/29/1999
• Issued: 12/04/2001
• Est. Priority Date: 10/29/1999
• Status: Expired due to Fees

• Current Assignee: Revasc Corporation
• Original Assignee: Revasc Corporation
• Inventors: Dorros, Gerald, Horzewski, Michael J.
• Primary Examiner(s): TRUONG, KEVIN THAO
• Application Number:
  US09/430,589
• Time in Patent Office: 767 Days
• Field of Search: 623/1.16, 623/1.13, 623/1.15, 606/191, 606/195, 606/198, 606/108, 606/194
• US Class Current: 623/1.16
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• 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 2002/826 more than one stent being applied sequentially
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2250/0007 for adjusting length
• CPC Class Codes: A61F 2250/0065 telescopic

Abstract

A prosthesis is provided comprising a plurality of telescoping tubular members that are deployed and assembled in vivo to define a lumen through a diseased portion of a vascular system. The individual tubular members are capable of accommodating torsional and longitudinal displacements caused by relative motion of the healthy portions on either side of the diseased portion of vessel.

Claims

1. A prosthesis for repairing a diseased vessel comprising:

a first tubular member having tissue-engaging end adapted to engage an interior wall of a first healthy section of vessel and free end, and a lumen extending therebetween the tissue-engaging end and the free end; and

a second tubular member separate from the first tubular member, having a tissue-engaging end adapted to engage an interior wall of a second healthy section of vessel and a free end, and a lumen extending therebetween the tissue-engaging end and the free end, the free end of the second tubular member adapted to receive the free end of the first tubular member in telescoping relation,

wherein the free end of the first tubular member moves independently of the free end of the second tubular member when longitudinal and torsional loads are applied to the first tubular member.

2. The prosthesis of claim 1 wherein the first and second tubular members are individually deployed in vivo.

3. The prosthesis of claim 1 wherein one of the free ends of the first and second tubular members further comprises a resilient seal.

4. The prosthesis of claim 3 wherein the resilient seal comprises an annular cylindrical gasket.

5. The prosthesis of claim 1 wherein a first ring is attached to the free end of the first tubular member and a second ring is attached to the free end of the second tubular member.

6. The prosthesis of claim 1 wherein at least one of the first and second tubular members expands from a contracted configuration to an expanded configuration.

7. The prosthesis of claim 6 wherein one of the first and second tubular members is balloon expandable.

8. The prosthesis of claim 6 wherein one of the first and second tubular members is self-expanding.

9. The prosthesis of claim 6 wherein one of the first and second tubular members is thermally expanded.

10. The prosthesis of claim 1 wherein the second tubular member includes first and second branches, the tissue-engaging end of the second tubular member is disposed on the first branch and the second branch includes a branch free end, and the prosthesis further comprises a third tubular member having a tissue-engaging end and a free end, the branch free end of the second tubular member adapted to received the free end of the third tubular member.

11. A prosthesis for repairing a diseased vessel comprising:

a first tubular member having tissue-engaging end adapted to engage an interior wall of a first healthy section of vessel and free end, and a lumen extending therebetween the tissue-engaging end and the free end; and

a second tubular member, separate from the first tubular member, having a tissue-engaging end adapted to engage an interior wall of a second healthy section of vessel and a free end, and a lumen extending therebetween the tissue-engaging end and the free end, the free end of the second tubular member adapted to receive the free end of the first tubular member in telescoping relation,

wherein the free end of the first tubular member moves independently of the free end of the second tubular member when torsional loads are applied to the first tubular member.

12. The prosthesis of claim 11 wherein one of the free ends of the first and second tubular members further comprises a resilient seal.

13. The prosthesis of claim 11 wherein at least one of the first and second tubular members expands from a contracted configuration to an expanded configuration.

14. The prosthesis of claim 11 wherein the second tubular member includes first and second branches, the tissue-engaging end of the second tubular member is disposed on the first branch and the second branch includes a branch free end, and the prosthesis further comprises a third tubular member having a tissue-engaging end and a free end, the branch free end of the second tubular member adapted to received the free end of the third tubular member.

15. A method of repairing a diseased portion of a vessel comprising:

providing a first tubular member having tissue-engaging end, and free end, and a lumen extending therebetween; and

providing a second tubular member having tissue-engaging end and free end, and a lumen extending therebetween;

transluminally advancing the first tubular member to a first position within a vessel;

deploying the first tubular member so that the tissue-engaging end engages a healthy portion of the vessel and the free end extends within the diseased portion of the vessel;

transluminally advancing the second tubular member to a second position within a vessel;

deploying the second tubular member so that the tissue-engaging end engages a healthy portion of the vessel and the free end is received within the free end of the first tubular member so that longitudinal and torsional motion of the free end of the first tubular member is not transmitted to the free end of the second tubular member.

16. The method of claim 15 wherein the second tubular member is deployed so that the free end of the second tubular member telescopes within the free end of the first tubular member.

17. The method of claim 15 wherein one of the free ends of the first and second tubular members further comprises a resilient seal, the method further comprising sealing the free end of the first tubular member to the free end of the second tubular member to reduce bypass flow.

18. The method of claim 15 wherein the first tubular member expands from a contracted configuration to an expanded configuration, deploying the first tubular member comprises expanding the first tubular member from the contracted configuration to the expanded configuration.

19. The method of claim 15 wherein deploying the first tubular member comprises applying a radially outwardly directed force to the tissue-engaging end of the first tubular member.

20. The method of claim 15 wherein deploying the first tubular member comprises removing a compressive force to permit the tissue-engaging end of the first tubular member to self-expand.