Stent member

• US 8,092,516 B2
• Filed: 11/06/2009
• Issued: 01/10/2012
• Est. Priority Date: 11/06/2008
• Status: Active Grant

• Current Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Original Assignee: Cook Medical Incorporated (Cook Group Incorporated)
• Inventors: Rasmussen, Erik, Jensen, Kim Moegelvang
• Primary Examiner(s): Willse, David H
• Assistant Examiner(s): SHIPMON, TIFFANY P
• Application Number:
  US12/613,836
• Publication Number:
  US 20100114294A1
• Time in Patent Office: 795 Days
• Field of Search: 623 115- 116, 623 13- 131
• US Class Current: 623/1.16
• 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 2/91 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 2002/826 more than one stent being applied sequentially
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes

Abstract

A rotationally-symmetric stent graft for deploying in a curved vessel has identical spaced stents along its length, with the stents being further apart in the region of the greatest curvature. The ends of the stents are parallel to each other and to the ends of the graft. The inter-stent spacing may vary along the entire length of the graft or only adjacent one end.

Claims

1. A stent member having a longitudinal extent and comprising a plurality of spaced and mutually-parallel stents, the ends of all the stents being perpendicular to the longitudinal extent of the stent member and the spacing between at least four mutually-adjacent stents increasing monotonically in a direction from one end of the stent member to another.

2. A stent member according to claim 1 and which is substantially rotationally symmetric.

3. A stent member according to claim 2 wherein the stents are substantially identical.

4. A stent member according to claim 1 wherein the stents are substantially identical.

5. A stent member according to claim 1 wherein the plurality of spaced and mutually-parallel stents are separate stents.

20. A stent member according to claim 1 in the form of a stent graft with graft material connecting the stents.

6. A stent member having a longitudinal extent and comprising a plurality of spaced and mutually-parallel stents, the ends of all the stents being perpendicular to the longitudinal extent of the stent member and the spacing between at least four mutually-adjacent stents increasing monotonically in a direction from one end of the stent member to another, wherein the increase in the spacing between mutually-adjacent stents itself increases in regular manner, whereby the increase in the spacing from one stent to the next stent is constant.

7. A stent member according to claim 6 wherein the stents are substantially identical.

8. A stent member according to claim 6 and which is substantially rotationally symmetric.

9. A stent member according to claim 8 wherein the stents are substantially identical.

10. A stent member according to claim 6 wherein the plurality of spaced and mutually-parallel stents are separate stents.

11. A stent member having a longitudinal extent and comprising a plurality of spaced and mutually-parallel stents, the ends of all the stents being perpendicular to the longitudinal extent of the stent member, wherein the spacing between mutually-adjacent stents is substantially uniform adjacent one end of the stent member and the spacing between at least four mutually-adjacent stents increases monotonically in a direction from a central region of the stent member to the other end.

12. A stent member according to claim 11 wherein the stents are substantially identical.

13. A stent member according to claim 11 and which is substantially rotationally symmetric.

14. A stent member according to claim 13 wherein the stents are substantially identical.

15. A stent member according to claim 11 wherein the increase in the spacing between mutually-adjacent stents itself increases in regular manner, whereby the increase in the spacing from one stent to the next stent is constant.

16. A stent member according to claim 15 wherein the stents are substantially identical.

17. A stent member according to claim 15 and which is substantially rotationally symmetric.

18. A stent member according to claim 17 wherein the stents are substantially identical.

19. A stent member according to claim 11 wherein the plurality of spaced and mutually-parallel stents are separate stents.