REDUCED PROFILE PROSTHETIC HEART VALVE

• US 20150127100A1
• Filed: 11/05/2014
• Published: 05/07/2015
• Est. Priority Date: 11/06/2013
• Status: Active Grant

• Current Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories Incorporated)
• Inventors: Braido, Peter N., Smith, Kent J.
• Granted Patent: US 9,700,409 B2
• Time in Patent Office: Days
• US Class Current: 623/2.38
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2220/005 using adhesives
• 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 2250/0008 for adjusting a position by translation along an axis or two perpendicular axes
• CPC Class Codes: A61F 2250/0062 Kits of prosthetic parts to be assembled in various combinations for forming different prostheses

Abstract

A prosthetic heart valve may include a stent body with a plurality of cells arranged in circumferential rows and a cuff attached to the stent. A leaflet attachment panel may be attached to and span a portion of one of the cells. A prosthetic valve element, such as a leaflet having a belly, may be mounted to the leaflet attachment panel. The leaflet attachment panel may not be integral with the stent body. A reduced overlap area may be defined between a proximal end of the stent body and a proximalmost point of attachment of the leaflet belly to the cuff. The reduced overlap area may have a size dependent upon the circumferential row of cells the leaflet attachment panel is attached to and a position of the portion of the leaflet attachment panel to which the leaflet is mounted. Alternately, the leaflet may be attached directly to the stent.

Claims

1. A prosthetic heart valve, comprising:

a stent body including a plurality of cells arranged in circumferential rows;

a cuff attached to the stent body;

at least one leaflet attachment panel attached to and spanning at least a portion of one of the cells; and

at least one prosthetic valve element mounted to the at least one leaflet attachment panel;

wherein the leaflet attachment panel is not integral with the stent body.

2. The prosthetic heart valve of claim 1, wherein the prosthetic valve element comprises a leaflet and the leaflet attachment panel is not integral with the leaflet.

3. The prosthetic heart valve of claim 1, wherein the leaflet attachment panel is integral with the cuff.

4. The prosthetic heart valve of claim 1, wherein the leaflet attachment panel is not integral with the cuff.

5. The prosthetic heart valve of claim 1, wherein the leaflet attachment panel is at least partially formed of fabric.

6. The prosthetic heart valve of claim 1, wherein the leaflet attachment panel is at least partially formed of tissue.

7. The prosthetic heart valve of claim 1, wherein the leaflet attachment panel spans an area of one entire cell.

8. The prosthetic heart valve of claim 7, wherein the leaflet attachment panel spans more than the area of one entire cell.

9. The prosthetic heart valve of claim 1, wherein the leaflet attachment panel spans less than an area of one entire cell, the leaflet attachment panel having a free edge.

10. The prosthetic heart valve of claim 9, wherein the leaflet attachment panel spans approximately three-fourths the area of one entire cell.

11. The prosthetic heart valve of claim 9, wherein the leaflet attachment panel spans approximately half the area of one entire cell.

12. The prosthetic heart valve of claim 9, wherein the leaflet attachment panel spans approximately one-fourth the area of one entire cell.

13. The prosthetic heart valve of claim 9, wherein the free edge forms a substantially straight line.

14. The prosthetic heart valve of claim 9, wherein the free edge is curved.

15. The prosthetic heart valve of claim 1, wherein the stent body includes an annulus section defining a first circumferential row of cells, an aortic section defining a second circumferential row of cells, and a third circumferential row of cells positioned between the first and second rows of cells.

16. The prosthetic heart valve of claim 15, wherein the cell to which the leaflet attachment panel is attached is in the second circumferential row of cells.

17. The prosthetic heart valve of claim 15, wherein the cell to which the leaflet attachment panel is attached is in the third circumferential row of cells.

18. A prosthetic heart valve, comprising:

a stent body having a proximal end, a distal end, and including a plurality of cells arranged in a plurality of circumferential rows;

a cuff attached to the stent body;

a leaflet attachment panel attached to at least one cell in one of the circumferential rows;

a leaflet mounted to a portion of the leaflet attachment panel, the leaflet including a leaflet belly having a proximalmost point of attachment to the cuff;

a reduced overlap area defined between the proximal end of the stent body and the proximalmost point of attachment of the leaflet belly to the cuff, the reduced overlap area having a size;

wherein the size of the reduced overlap area is dependent upon (i) the circumferential row of cells the leaflet attachment panel is attached to and (ii) a position of the portion of the leaflet attachment panel to which the leaflet is mounted.

19. The prosthetic heart valve of claim 18, wherein, when the leaflet is attached to a given portion of the leaflet attachment panel, the size of the reduced overlap area is greater when the leaflet attachment panel is attached to a relatively distal circumferential row of cells compared to when the leaflet attachment panel is attached to a relatively proximal circumferential row of cells.

20. The prosthetic heart valve of claim 18, wherein, when the leaflet attachment panel is attached to a given circumferential row of cells, the size of the reduced overlap area is greater when the leaflet is attached to a relatively distal portion of the leaflet attachment panel compared to when the leaflet is attached to a relatively proximal portion of the leaflet attachment panel.

21. A prosthetic heart valve, comprising:

a stent body including a plurality of cells arranged in circumferential rows;

a plurality of strut intersections being defined by an intersection of at least two adjacent cells;

a cuff attached to the stent body;

a portion of a first leaflet attached directly to one of the plurality of strut intersections; and

a portion of a second leaflet attached directly to the one of the plurality of strut intersections.

22. The prosthetic heart valve of claim 21, wherein the portions of the first and second leaflets are attached to the one strut intersection with a single suture.

23. The prosthetic heart valve of claim 21, wherein the portions of the first and second leaflets are attached to the one strut intersection with a plurality of sutures.

24. A prosthetic heart valve, comprising:

a stent body having a proximal end and a distal end, the stent body formed from a plurality of open cells arranged in circumferential rows;

a cuff attached to the stent body;

a leaflet attachment panel attached to and overlying at least a portion of one of the open cells, the leaflet attachment panel having a proximal end and a distal end; and

a leaflet attached to a portion of the leaflet attachment panel between the proximal end and the distal end thereof, the leaflet including a leaflet belly having a proximalmost point of attachment to the cuff,

wherein an area between the proximal end of the stent body and the proximalmost point of attachment of the leaflet belly to the cuff defines a reduced overlap area having a longitudinal length; and

wherein the longitudinal length of the reduced overlap area is at least dependent upon a location of attachment of the leaflet to the leaflet attachment panel between the proximal end and distal end thereof.