Stents for prosthetic heart valves

• US 9,339,382 B2
• Filed: 01/24/2014
• Issued: 05/17/2016
• 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, J. Michael
• Primary Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US14/163,842
• Publication Number:
  US 20140142694A1
• Time in Patent Office: 844 Days
• Field of Search: 623/1.24, 623 217- 218
• US Class Current: 1/1
• 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 prosthesis for implantation within a native mitral valve having a generally tubular expandable stent structure having a first end, a second end, a central body portion having one or more openings, and a longitudinal axis. A wing portion extends outwardly from the stent structure and away from the longitudinal axis of the stent structure in an expanded deployed configuration. A radius of the wing portion is greater than a radius of the central body portion in the expanded deployed configuration, and the wing portion fits within one of the openings in the central body portion of the stent structure in a crimped delivery configuration. A valve structure having a plurality of leaflets is attached to an interior of the stent structure.

Claims

1. A stented valve prosthesis for implantation within a native mitral valve, comprising:

a generally tubular expandable stent structure comprising a first end, a second end, a central body portion having one or more openings, and a longitudinal axis;

a wing portion extending outwardly from the stent structure and away from the longitudinal axis of the stent structure in an expanded deployed configuration,

wherein a radius of the wing portion relative to the longitudinal axis is greater than a radius of the central body portion relative to the longitudinal axis in the expanded deployed configuration, and

wherein the wing portion fits within one of the openings in the central body portion of the stent structure in a crimped delivery configuration; and

a valve structure comprising a plurality of leaflets attached to an interior of the stent structure.

2. The stented valve prosthesis of claim 1, wherein the wing portion comprises a distal end detached from the stent structure.

3. The stented valve prosthesis of claim 1, wherein the wing portion extends from the first end of the stent structure and toward the second end of the stent structure.

4. The stented valve prosthesis of claim 1, wherein the second end of the stent structure comprises a flared portion having a radius greater than the radius of the central body portion.

5. The stented valve prosthesis of claim 1, wherein the wing portion extends around a majority of a circumference of the first end of the stent structure.

6. The stented valve prosthesis of claim 1, wherein the wing portion extends toward the first end of the stent structure.

7. The stented valve prosthesis of claim 1, wherein the wing portion comprises a curve.

8. The stented valve prosthesis of claim 7, wherein the wing portion curves back toward the longitudinal axis of the stent structure.

9. The stented valve prosthesis of claim 1, wherein the wing portion is configured to engage an annulus of the native mitral valve.

10. The stented valve prosthesis of claim 1, further comprising a sealing gasket attached to the stent structure.

11. The stented valve prosthesis of claim 1, wherein the stent structure is self-expanding.

12. The stented valve prosthesis of claim 1, wherein the wing portion comprises a plurality of wing components.

13. A stented valve prosthesis for implantation within a native mitral valve, comprising:

a generally tubular stent structure comprising a first end, a second end, a central body portion, and a longitudinal axis;

a wing portion extending outwardly from the first end of the stent structure toward the second end of the stent structure and away from the longitudinal axis of the stent structure over an area of reduced wire density of the stent structure,

wherein a radius of the wing portion relative to the longitudinal axis is greater than a radius of the central body portion relative to the longitudinal axis; and

a valve structure comprising a plurality of leaflets attached to an interior of the stent structure.

14. The stented valve prosthesis of claim 13, wherein the area of reduced wire density is located in the central body portion of the stent structure.

15. The stented valve prosthesis of claim 13, wherein a diameter of the second end of the stent structure is greater than a diameter of the central body portion.

16. The stented valve prosthesis of claim 13, wherein the wing portion comprises a plurality of wing components.

17. A method of implanting a stented valve prosthesis within a native mitral valve, comprising:

inserting a delivery system with the stented valve prosthesis into a body lumen, the stented valve prosthesis comprising;

a generally tubular expandable stent structure comprising a first end, a second end, a central body portion having one or more openings, and a longitudinal axis;

a wing portion extending outwardly from the stent structure and away from the longitudinal axis of the stent structure in an expanded deployed configuration,

wherein a radius of the wing portion relative to the longitudinal axis is greater than a radius of the central body portion relative to the longitudinal axis in the expanded deployed configuration, and

wherein the wing portion fits within one of the openings in the central body portion of the stent structure in a crimped delivery configuration; and

a valve structure comprising a plurality of leaflets attached to an interior of the stent structure; and

deploying the stented valve prosthesis at an implantation location within the native mitral valve.

18. The method of claim 17, wherein deploying the stented valve prosthesis comprises positioning the stented valve prosthesis such that the wing portion of the stent structure engages a mitral valve annulus on an atrial side of the native mitral valve, the central body portion of the stent structure is located within the native mitral valve annulus, and the second end of the stented valve prosthesis is located on a ventricular side of the native mitral valve.

19. The method of claim 17, wherein inserting the delivery system into the body lumen comprises percutaneously advancing the delivery system to the native mitral valve via a catheterization technique.

20. The method of claim 17, further comprising removing the delivery system from the body lumen after deploying the stented valve prosthesis.