Prosthetic heart valves with flexible post geometry

• US 6,478,819 B2
• Filed: 05/27/1999
• Issued: 11/12/2002
• Est. Priority Date: 05/27/1999
• Status: Expired due to Term

• Current Assignee: Corcym SRL (LivaNova Plc)
• Original Assignee: Sulzer Carbomedics Inc. (Zimmer Biomet Holdings, Inc.)
• Inventors: Moe, Riyad E.
• Primary Examiner(s): McDermott, Corrine
• Assistant Examiner(s): STEWART, ALVIN J
• Application Number:
  US09/321,325
• Publication Number:
  US 20010049556A1
• Time in Patent Office: 1,265 Days
• Field of Search: 623/2.1, 623/2.17, 623/2.18, 623/2.14, 623/2.38, 623/1.24, 623/1.25, 623/1.26, 623/2.11, 623/23.64
• US Class Current: 623/2.18
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents

Abstract

A stent includes an elongated stent member having a plurality of post members. Each post member includes a pair of opposite sides. A first end of each post member includes an arcuate apex interconnecting the opposite sides. A second end of each post member has an open end. The opposite sides are angled to converge toward each other at the second end. The second end of each post member is connected to an adjacent post member by a stent portion. Each opposite side and each stent portion converge at an angle of less than 90°. The opposite sides are angled to converge toward each other at the second end.

Claims

1. A prosthetic heart valve comprising:

1) an annular valve body comprising a flexible material, said valve body having

A) a circumference and a plurality of valve body posts spaced around said circumference, each of said valve body posts having first and second ends, each of said first ends comprising a body post apex,

B) an attachment curve coupling each pair of adjacent body post apices, and

C) a plurality of flexible leaflets, each leaflet being coupled to an attachment curve; and

2) a stent coupled to the valve body, said stent comprising a plurality of flexible stent post members, each of said stent post members being coupled to a valve body post and having first and second ends, a pair of opposite sides, and a uniform cross-section,

A) each of said first ends comprising an arcuate stent post apex interconnecting the opposite sides,

B) each of said second ends being open,

C) each said pair of opposite sides being spaced apart by a first distance adjacent the apex and a second distance, less than the first distance, adjacent the second end.

2. The prosthetic heart valve of claim 1 wherein said stent further comprises at least one stent portion interconnecting two adjacent stent post members.

3. The prosthetic heart valve of claim 2 wherein said stent further comprises a plurality of stent portions and the second end of each stent post member is coupled to the second end of an adjacent stent post member by a stent portion.

4. The prosthetic heart valve of claim 3 wherein each side of a stent post member and each stent portion connected to said side of a stent post member converge at an angle of less than 90°

.

5. The prosthetic heart valve of claim 1 wherein the stent has a circular cross section.

6. The prosthetic heart valve of claim 1 wherein the stent is embedded in the valve body.

7. The prosthetic heart valve of claim 1 wherein the stent is coupled to an outside surface of the valve body.

8. The prosthetic heart valve of claim 1 wherein the stent has a rectangular cross section.

9. The prosthetic heart valve of claim 1 wherein the flexible material is a polymer.

10. The prosthetic heart valve of claim 9 wherein the polymer comprises silicone.

11. The prosthetic heart valve of claim 9 wherein the polymer is polyurethane.

12. The prosthetic heart valve of claim 1 wherein the flexible material comprises tissue.

13. The prosthetic heart valve as defined in claim 1 further comprising a sewing ring coupled to said valve body.