COMMISSURE ATTACHMENT FEATURES FOR IMPROVED DELIVERY FLEXIBILITY AND TRACKING

• US 20180161157A1
• Filed: 02/09/2018
• Published: 06/14/2018
• Est. Priority Date: 09/04/2013
• Status: Active Grant

• Current Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories)
• Original Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories)
• Inventors: Braido, Peter N., Fahim, Mina S., McCarthy, Andrea L.
• Granted Patent: US 10,874,509 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable

Abstract

A prosthetic heart valve includes a collapsible and expandable stent having a proximal end and a distal end. A plurality of commissure attachment features (“CAFs”) is disposed on the stent, with each CAF including a body and a plurality of eyelets. The eyelets may be arranged in a single column or in a plurality of rows and columns. The prosthetic heart valve also includes a collapsible and expandable valve assembly including a plurality of leaflets connected to the plurality of commissure attachment features. The bodies of the CAFs may include a number of other features including, for example, a slot extending between columns of eyelets.

Claims

1. A prosthetic heart valve, comprising:

a collapsible and expandable stent having proximal end and a distal end, the stent including a plurality of struts defining a plurality of open cells, and a plurality of commissure attachment features; and

a collapsible and expandable valve assembly including a plurality of leaflets connected to the plurality of commissure attachment features, the valve assembly adapted to allow blood to flow from the proximal end to the distal end, and to substantially block blood from flowing from the distal end to the proximal end,

wherein each commissure attachment feature includes a body having first and second side edges extending in a longitudinal direction from the proximal end of the stent to the distal end of the stent and a longitudinal axis positioned between the two side edges and extending in the longitudinal direction of the stent, a first eyelet formed as a first recess in the first side edge extending toward the longitudinal axis, and a second eyelet formed as a second recess in the second side edge extending toward the longitudinal axis, such that the first and second eyelets are not fully enclosed by the body.

2. The prosthetic heart valve of claim 1, wherein the first and second eyelets are each formed by first and second interior edges of the body extending in a direction substantially perpendicular to the longitudinal direction of the stent, and a third interior edge extending in a direction substantially parallel to the longitudinal direction of the stent.

3. The prosthetic heart valve of claim 2, wherein the first interior edges of the body include protrusions adjacent the side edges of the body extending in a direction toward the second interior edges.

4. The prosthetic heart valve of claim 2, wherein the second interior edges of the body include protrusions adjacent the side edges of the body extending in a direction toward the first interior edges.

5. The prosthetic heart valve of claim 2, wherein the first interior edges of the body include first protrusions adjacent the side edges of the body extending in a direction toward the second interior edges of the body, and the second interior edges of the body include second protrusions adjacent the side edges of the body extending in a direction toward the first interior edges of the body.

6. The prosthetic heart valve of claim 1, wherein the body includes a rectangular eyelet formed by four interior edges of the body.

7. The prosthetic heart valve of claim 6, wherein the rectangular eyelet is positioned proximal to the first and second eyelets.

8. The prosthetic heart valve of claim 1, wherein a proximal end of the body includes a first projection extending circumferentially away from the longitudinal axis of the body.

9. The prosthetic heart valve of claim 8, wherein the proximal end of the body includes a second projection extending circumferentially away from the longitudinal axis of the body, the first and second projections being positioned on opposite sides of the longitudinal axis of the body.

10. The prosthetic heart valve of claim 8, wherein the first projection extends circumferentially farther away from the longitudinal axis of the body than any other portion of the body.

11. The prosthetic heart valve of claim 1, wherein the body includes a distal end having a first projection adjacent the first side edge extending toward the distal end of the stent.

12. The prosthetic heart valve of claim 12, wherein the distal end of the body has a second projection adjacent the second side edge extending toward the distal end of the stent.

13. A prosthetic heart valve, comprising:

a collapsible and expandable stent having proximal end and a distal end, the stent including a plurality of struts defining a plurality of open cells, and a plurality of commissure attachment features; and

a collapsible and expandable valve assembly including a plurality of leaflets connected to the plurality of commissure attachment features, the valve assembly adapted to allow blood to flow from the proximal end to the distal end, and to substantially block blood from flowing from the distal end to the proximal end,

wherein each commissure attachment feature includes a body having a longitudinal axis extending in a direction from the proximal end of the stent to the distal end of the stent, and a plurality of eyelets arranged in at least two rows and at least two columns, at least one of the eyelets having an open side.

14. The prosthetic heart valve of claim 13, wherein at least four of the plurality of eyelets are generally rectangular, each of the at least four eyelets having an open side.

15. The prosthetic heart valve of claim 14, further comprising protrusions on portions of the body on proximal and distal sides of each of the at least four eyelets, the protrusions extending generally parallel to the longitudinal axis of the body adjacent the open sides of the eyelets.

16. The prosthetic heart valve of claim 13, wherein a proximal end of the body includes a first projection extending circumferentially away from the longitudinal axis of the body.

17. The prosthetic heart valve of claim 16, wherein the proximal end of the body includes a second projection extending circumferentially away from the longitudinal axis of the body, the first and second projections being positioned on opposite sides of the longitudinal axis of the body.

18. The prosthetic heart valve of claim 16, wherein the first projection extends circumferentially farther away from the longitudinal axis of the body than any other portion of the body.

19. The prosthetic heart valve of claim 13, wherein the body includes a distal end having a first projection extending toward the distal end of the stent, the first projection substantially aligned with the open side of a first one of the eyelets.

20. The prosthetic heart valve of claim 19, wherein the distal end of the body has a second projection extending toward the distal end of the stent, the second projection substantially aligned with the open side of a second one of the eyelets, the longitudinal axis of the body positioned between the first and second ones of the eyelets.