Stented prosthetic heart valve

• US 9,414,913 B2
• Filed: 10/25/2013
• Issued: 08/16/2016
• Est. Priority Date: 10/25/2013
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Beith, Jason, Howard, Elliot
• Primary Examiner(s): Sharma, Yashita
• Assistant Examiner(s): Schutte, Wade P
• Application Number:
  US14/063,705
• Publication Number:
  US 20150119980A1
• Time in Patent Office: 1,026 Days
• Field of Search: 623/2.1, 623/2.12, 623/2.14, 623/2.15, 623/2.18
• US Class Current: 1/1
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2230/0008 elliptical or oval
• CPC Class Codes: A61F 2230/0019 rectangular

Abstract

A stented prosthetic heart valve including a stent assembly, a leaflet assembly, and mounting members. The stent assembly includes a stent post frame, a stent post frame covering, and a base frame. The stent post frame includes a continuous rail forming a closed-curved shape defining a longitudinal axis, and a plurality of circumferentially-spaced posts projecting from cusp segments in a direction of the longitudinal axis. The cloth covering encompasses the rail. The base frame supports the cusp segments. The valve leaflet assembly is attached to the stent assembly, and includes a leaflet clamped between one of the cusp segments and the base frame. The mounting members each directly pass through the stent post frame cloth covering, the first leaflet and the base frame. The rail can have a constant cross-sectional shape with a major axis dimension that is greater than a minor axis dimension.

Claims

1. A stented prosthetic heart valve comprising:

a stent assembly including;

a stent post frame including a continuously formed rail forming a closed-curve shape defining a central longitudinal axis, the closed-curve shape including a plurality of circumferentially-spaced posts projecting from, and interposed between, cusp segments in a direction of the longitudinal axis,

a stent post frame cloth covering encompassing the rail,

a base frame configured to support the cusp segments of the stent post frame;

a valve leaflet assembly attached to the stent assembly and including a first leaflet clamped between a first one of the cusp segments and the base frame; and

a plurality of mounting members securing the first leaflet to the stent assembly, wherein each of the plurality of mounting members directly pass through the stent post frame cloth covering, the first leaflet, and the base frame,

wherein the base frame includes a hub and a support wall, the support wall projecting transversely outwardly from the hub and defining a plurality of holes for receiving respective ones of the plurality of mounting members, and

wherein the stent assembly further includes a base frame cloth covering encompassing the base frame.

2. The stented prosthetic heart valve of claim 1, wherein an edge of the first leaflet is located between and contacts the stent post frame cloth covering and the base frame cloth covering.

3. The stented prosthetic heart valve of claim 2, wherein the plurality of mounting members directly pass through the base frame cloth covering.

4. The stented prosthetic heart valve of claim 1, wherein the mounting members are sutures.

5. The stented prosthetic heart valve of claim 1, wherein each of the posts is defined by spaced apart leg portions extending from corresponding ones of the cusp segments and intersecting at a tip opposite the cusp segments, and further wherein the rail has a constant cross-sectional shape along at least the posts, the cross-sectional shape defining a major axis dimension greater than a minor axis dimension.

6. The stented prosthetic heart valve of claim 5, wherein a spatial rotation of the major axis dimension along the leg portions differs from a spatial rotation of the major axis dimension along the corresponding tip.

7. The stented prosthetic heart valve of claim 6, wherein the closed-curve shape rotates the major axis dimension in transitioning from the leg portions to the corresponding tip.

8. The stented prosthetic heart valve of claim 7, wherein the major axis dimension along each of the leg portions is spatially rotated approximately 90 degrees relative to the major axis dimension along the corresponding tip.

9. The stented prosthetic heart valve of claim 5, wherein the cross-sectional shape of the rail along at least the posts is rectangular.

10. The stented prosthetic heart valve of claim 5, wherein the cross-sectional shape of the rail along at least the posts is non-circular.

11. The stented prosthetic heart valve of claim 5, wherein the base frame interfaces with the cusp segments along a margin of attachment, and further wherein the minor axis dimension along the cusp segments is perpendicular to the margin of attachment.

12. The stented prosthetic heart valve of claim 5, wherein the rail has the constant cross-sectional shape along an entirety of the stent post frame.

13. The stented prosthetic heart valve of claim 5, wherein a cross-sectional shape of the rail along at least a portion of the cusp segments varies from a cross-sectional shape of the rail along the posts.

14. The stented prosthetic heart valve of claim 1, wherein the stent post frame is a single, molded piece.

15. The stented prosthetic heart valve of claim 1, wherein the stent post frame is a machined component.