Heart valve assembly

• US 9,782,256 B2
• Filed: 04/27/2015
• Issued: 10/10/2017
• Est. Priority Date: 04/27/2015
• Status: Active Grant

• Current Assignee: Venus Medtech (Hangzhou), Inc.
• Original Assignee: Venus Medtech (Hangzhou), Inc.
• Inventors: Zeng, Min Frank, Lo, Pham
• Primary Examiner(s): Isabella, David
• Assistant Examiner(s): BARIA, DINAH N
• Application Number:
  US14/696,645
• Publication Number:
  US 20160310267A1
• Time in Patent Office: 897 Days
• 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 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• 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 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0052 T-shaped
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0065 toroidal, e.g. ring-shaped, doughnut-shaped
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61F 2250/0063 Nested prosthetic parts
• CPC Class Codes: A61F 2250/0069 Sealing means

Abstract

A heart valve assembly has a heart valve assembly that has an anchor section, a generally cylindrical valve support section, and a neck section that transitions between the anchor section and the valve support section. A plurality of supports extend radially outwardly in an annular manner about an upper end of the valve support section, and the anchor section has an annular flange that extends radially therefrom, so that an annular space is defined between the annular flange and the annular supports for receiving or capturing the native annulus when the heart valve is deployed. The heart valve assembly also includes a leaflet assembly having a plurality of leaflets that are stitched to the valve support section and which are positioned on an inflow side of the neck section.

Claims

1. A heart valve assembly, comprising:

an anchor section having an annular ring of cells that are configured to define an annular concave belt having a peripheral inflow end and a peripheral outflow end, with an anchor neck region defined between the inflow end and the outflow end;

a valve support section having a generally cylindrical body with a concave neck area provided adjacent an outflow end, wherein the anchor section and the valve support section are provided in separate pieces and coupled together when the concave neck area of the cylindrical body is inserted through the anchor section and the outflow end of the valve support section is coupled to the outflow end of the anchor section, and wherein the anchor neck region of the anchor section and the concave neck area of the valve support section overlap each other when the anchor section is coupled with the valve support section, forming a neck section of the heart valve assembly; and

a leaflet assembly having a plurality of leaflets that are stitched to the cylindrical body and which are positioned on an inflow side of the neck section.

2. The assembly of claim 1, wherein the valve support section has an inflow end that is configured with an annular zig-zag arrangement that defines peaks and valleys.

3. The assembly of claim 1, wherein the anchor neck region is configured as an annular U-shaped section.

4. The assembly of claim 3, wherein the concave neck area of the valve support section is seated inside the anchor neck region.

5. The assembly of claim 1, wherein the plurality of leaflets comprises three or four leaflets.

6. The assembly of claim 1, further including a plurality of skirts connected to the anchor section and the valve support section.

7. The assembly of claim 1, wherein the peripheral outflow end of the anchor section is configured with an annular zig-zag arrangement that defines peaks and valleys.

8. A heart valve assembly, comprising:

an anchor section having an annular ring of cells that are configured to define an annular concave belt having a peripheral inflow end and a peripheral outflow end that comprises an arrangement of alternating tips and valleys that define inflection points, with an anchor neck region defined between the inflow end and the outflow end; and

a valve support section having a generally cylindrical body with a concave neck area provided adjacent an outflow end, and outflow tips provided along the outflow end, wherein the anchor section and the valve support section are provided in separate pieces, and the concave neck area of the cylindrical body is inserted through the anchor section and the outflow tips are engaged with the inflection points at the outflow end of the anchor section to couple the valve support section to the anchor section, forming a neck section of the heart valve assembly; and

a leaflet assembly having a plurality of leaflets that are stitched to the cylindrical body and which are positioned on an inflow side of the neck section.

9. The assembly of claim 8, wherein the valve support section has an inflow end that is configured with an annular zig-zag arrangement that defines peaks and valleys.

10. The assembly of claim 8, wherein the anchor neck region is configured as an annular U-shaped section.

11. The assembly of claim 10, wherein the concave neck area of the valve support section is seated inside the anchor neck region.

12. The assembly of claim 8, wherein the plurality of leaflets comprises three or four leaflets.

13. The assembly of claim 8, further including a plurality of skirts connected to the anchor section and the valve support section.