STENT FEATURES FOR COLLAPSIBLE PROSTHETIC HEART VALVES

• US 20180133005A1
• Filed: 01/11/2018
• Published: 05/17/2018
• Est. Priority Date: 02/27/2009
• Status: Active Grant

• Current Assignee: St Jude Medical LLC (Abbott Laboratories)
• Original Assignee: St Jude Medical LLC (Abbott Laboratories)
• Inventors: Braido, Peter N., Alkhatib, Yousef F., Benson, Thomas M., Chalekian, Aaron J., Khouengboua, Ott, Schraut, Julia A.
• Granted Patent: US 10,441,417 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91575 connected peak to trough
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/008 paraboloidal

Abstract

A prosthetic heart valve includes a stent having an expanded condition and a collapsed condition. The stent includes a plurality of distal cells, a plurality of proximal cells, a plurality of support struts coupling the proximal cells to the distal cells, and at least one support post connected to a plurality of proximal cells. The proximal cells are longitudinally spaced apart from the distal cells. Various strut configurations and connections of the struts to the proximal cells and of the proximal cells to the support post improve stent flexibility and reduce stress in the valve leaflets.

Claims

1. (canceled)

2. A prosthetic heart valve, comprising:

a stent having a proximal end, a distal end, an expanded condition and a collapsed condition;

a support post connected to the stent; and

an interlocking element connected to the proximal end of the stent by a pair of struts, each of the struts having a first end operatively connected to the interlocking element and a second end connected to the support post; and

a valve structure connected to the stent.

3. The prosthetic heart valve as claimed in claim 2, wherein the second ends of the struts are connected to the support post at positions that are spaced apart from one another in a circumferential direction of the stent.

4. The prosthetic heart valve as claimed in claim 2, wherein the interlocking element includes an eyelet therein.

5. The prosthetic heart valve as claimed in claim 2, wherein the support post has a proximal end and a distal end, and the proximal end of the stent includes a plurality of proximal cells, the proximal end of the stent extending proximally of the proximal end of the suppot post in the collapsed condition of the stent and the struts being positioned between at least two of the proximal cells in the collapsed condition of the stent.

6. The prosthetic heart valve as claimed in claim 5, wherein the interlocking element extends proximally of the proximal end of the stent in the expanded condition of the stent.

7. The prosthetic heart valve as claimed in claim 2, further comprising a strut segment interposed between the first ends of the struts and the interlocking element.

8. The prosthetic heart valve as claimed in claim 2, wherein the stent includes:

a plurality of proximal cells at the proximal end;

a plurality of distal cells at the distal end, the distal cells being longitudinally spaced apart from the proximal cells; and

a plurality of support struts, each support strut having a first end connected to one of the proximal cells and a second end connected to one of the distal cells.

9. The prosthetic heart valve as claimed in claim 8, wherein the support post is connected to the proximal cells of the stent.

10. A prosthetic heart valve, comprising:

a stent having a proximal end, a distal end, an expanded condition and a collapsed condition, the stent including a plurality of proximal cells at the proximal end and a plurality of distal cells at the distal end;

a support post connected to the proximal cells; and

an interlocking element connected to the distal end of the stent by a pair of struts, each of the struts having a first end operatively connected to the interlocking element and a second end connected to a distal cell; and

a valve structure connected to the stent.

11. The prosthetic heart valve as claimed in claim 10, wherein the second end of one of the struts is connected to one of the distal cells, and the second end of another one of the struts is connected to another distal cell adjacent the one distal cell.

12. The prosthetic heart valve as claimed in claim 10, wherein the second ends of the struts are connected to a single one of the distal cells at positions that are spaced apart from one another in a circumferential direction of the stent.

13. The prosthetic heart valve as claimed in claim 10, wherein the interlocking element includes an eyelet therein.

14. The prosthetic heart valve as claimed in claim 10, wherein the interlocking element extends distally of the distal end of the stent in the expanded condition of the stent.

15. The prosthetic heart valve as claimed in claim 10, wherein the interlocking element extends distally of the distal end of the stent in the collapsed condition of the stent.

16. The prosthetic heart valve as claimed in claim 10, further comprising a spacer interconnecting two adjacent distal cells, the spacer being connected only to the two adjacent distal cells.

17. The prosthetic heart valve as claimed in claim 16, wherein the second ends of the struts are connected to the spacer at positions that are spaced apart from one another in a circumferential direction of the stent.