Stents for prosthetic heart valves

• US 10,646,335 B2
• Filed: 07/10/2018
• Issued: 05/12/2020
• Est. Priority Date: 01/24/2008
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Tabor, Charles, Eberhardt, Carol E., Laske, Timothy G., Ryan, Timothy R., Morrow, Joseph C., Tam, Tammy Y., Glynn, Brian A., Rubin, Anne L. Brody, Tuchek, Michael J.
• Primary Examiner(s): Gherbi, Suzette J
• Application Number:
  US16/031,019
• Publication Number:
  US 20190038406A1
• Time in Patent Office: 672 Days
• Field of Search: 623 217, 623 218
• CPC Class Codes: A61F 2/013 Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2433 using balloon catheter
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• 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 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/016 made from wire-like elements
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• 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 2220/0091 connected by a hinged linkage mechanism, e.g. of the single-bar or multi-bar linkage type
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2250/0018 differing in elasticity, stiffness or compressibility
• CPC Class Codes: A61F 2250/003 differing in adsorbability or resorbability, i.e. in adsorption or resorption time
• CPC Class Codes: A61F 2250/0039 differing in diameter

Abstract

A stented valve including a generally tubular stent structure that has a longitudinal axis, first and second opposite ends, a plurality of commissure support structures spaced from the first and second ends and extending generally parallel to the longitudinal axis, at least one structural wire positioned between each two adjacent commissure support structures, and at least one wing portion extending from two adjacent commissure support structures and toward one of the first and second ends of the stent structure. The stewed valve further includes a valve structure attached within the generally tubular stent structure to the commissure support structures.

Claims

1. A prosthetic valve comprising:

a stent structure comprising,

an inflow portion including a first row of cells having twelve crowns at an inflow end of stent structure and a second row of cells adjacent the first row of cells in a downstream direction,

a plurality of commissure posts extending in a downstream direction from a downstream end of the second row of cells, and

an outflow portion extending from a downstream end of the plurality of commissure posts, wherein the outflow portion defines a downstream end of the stent structure with six crowns; and

a valve structure attached the commissure posts.

2. The prosthetic valve of claim 1, wherein the plurality of commissure posts are three commissure posts.

3. The prosthetic valve of claim 1, wherein the outflow portion includes a third row of cells, wherein the third row of cells comprises six cells.

4. The prosthetic valve of claim 3, wherein a downstream end of the third row of cells defines the six crowns at the downstream end of the stent structure.

5. The prosthetic valve of claim 1, wherein the plurality of commissure posts are disposed in a central portion of the stent structure between the inflow portion and the outflow portion, and wherein a row of central portion cells is defined in the central portion at a downstream end by an upstream end of the outflow portion and at an upstream end by downstream end of the second row of cells, wherein each of the cells of the row of central portion cells are larger than each of the cells of the first row of cells and each of the cells of the second row of cells.

6. The prosthetic valve of claim 5, wherein the central portion includes longitudinal struts disposed between the commissure posts such that each cell of the row of central portion cells is further defined by a commissure post or a longitudinal strut on sides of the cell.

7. The prosthetic valve of claim 6, wherein the longitudinal posts are at a first radial distance from a central axis of the stent structure and the commissures posts are at a second radial distance from the central axis, wherein the first distance is greater than the second distance such that the commissure posts are closer to the central axis than the longitudinal posts.

8. The prosthetic valve of claim 1, wherein the stent structure is balloon expandable.

9. The prosthetic valve of claim 1, wherein the prosthetic valve is configured for placement within an aortic valve.

10. A prosthetic valve comprising:

a stent structure comprising,

an inflow portion including a first row of cells having twelve crowns at an inflow end of stent structure, a second row of cells adjacent the first row of cells in a downstream direction, and a third row of cells adjacent the second row of cells in a downstream direction,

a plurality of commissure posts extending in a downstream direction from a downstream end of the third row of cells, and

an outflow portion extending from a downstream end of the plurality of commissure posts, wherein the outflow portion defines a downstream end of the stent structure with six crowns; and

a valve structure attached the commissure posts.

11. The prosthetic valve of claim 10, wherein the plurality of commissure posts are three commissure posts.

12. The prosthetic valve of claim 10, wherein the outflow portion includes a fourth row of cells, wherein the fourth row of cells comprises six cells.

13. The prosthetic valve of claim 12, wherein a downstream end of the fourth row of cells defines the six crowns at the downstream end of the stent structure.

14. The prosthetic valve of claim 10, wherein the plurality of commissure posts are disposed in a central portion of the stent structure between the inflow portion and the outflow portion, and wherein a row of central portion cells is defined in the central portion at a downstream end by an upstream end of the outflow portion and at an upstream end by downstream end of the second row of cells, wherein each of the cells of the row of central portion cells are larger than each of the cells of the first row of cells, each of the cells of the second row of cells, and each of the cells of the third row of cells.

15. The prosthetic valve of claim 14, wherein the central portion includes longitudinal struts disposed between the commissure posts such that each cell of the row of central portion cells is further defined by a commissure post or a longitudinal strut on sides of the cell.

16. The prosthetic valve of claim 10, wherein the stent structure is balloon expandable.

17. The prosthetic valve of claim 10, wherein the prosthetic valve is configured for placement within an aortic valve.