LEAFLET SUTURING TO COMMISSURE POINTS FOR PROSTHETIC HEART VALVE

• US 20120197391A1
• Filed: 08/23/2011
• Published: 08/02/2012
• Est. Priority Date: 02/01/2011
• Status: Active Grant

• Current Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories)
• Original Assignee: St. Jude Medical Cardiology Division Incorporated (Abbott Laboratories)
• Inventors: Alkhatib, Yousef F., Braldo, Peter Nicholas
• Granted Patent: US 9,717,593 B2
• Time in Patent Office: Days
• US Class Current: 623/2.18
• 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 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts
• CPC Class Codes: A61F 2/9517 handle assemblies therefor
• CPC Class Codes: A61F 2002/9534 for repositioning of stents
• 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 2250/0039 differing in diameter

Abstract

A collapsible prosthetic heart valve includes a collapsible and expandable stent and a collapsible and expandable valve assembly. The stent has a proximal end and a distal end. A plurality of commissure points is disposed on the stent. The valve assembly is disposed within the stent and includes a plurality of leaflets. Each leaflet has a free edge. An end portion of the free edge of each leaflet is folded and sutured to a corresponding one of the plurality of the commissure points.

Claims

1. A prosthetic heart valve, comprising:

a collapsible and expandable stent having a proximal end and a distal end;

a plurality of commissure points disposed on the stent; and

a collapsible and expandable valve assembly disposed within the stent, the valve assembly including a plurality of leaflets, each leaflet having a free edge;

wherein an end portion of the free edge of one leaflet includes a folded portion, the folded portion being sutured to one of the plurality of commissure points.

2. The prosthetic heart valve according to claim 1, wherein the end portions of the free edges of first and second adjacent leaflets are sutured to one another.

3. The prosthetic heart valve according to claim 1, wherein the end portion of the free edge of an adjacent leaflet includes a folded portion, the folded portion of the adjacent leaflet being sutured to the one commissure point.

4. The prosthetic heart valve according to claim 3, further comprising a reinforcement web disposed between the folded portions of the one leaflet and the adjacent leaflet.

5. The prosthetic heart valve according to claim 3, wherein the folded portion of the one leaflet and the folded portion of the adjacent leaflet each wrap at least partially around the one commissure point, the prosthetic heart valve further comprising a web of material overlying the folded portions of the leaflets, the web of material being sutured to both the folded portions of the leaflets and the one commissure point.

6. The prosthetic heart valve according to claim 1, wherein the folded portion is generally parallel to a remainder of the end portion of the one leaflet.

7. The prosthetic heart valve according to claim 1, wherein the folded portion is generally perpendicular to a remainder of the end portion of the one leaflet.

8. The prosthetic heart valve according to claim 7, wherein the free end of the folded portion extends beyond the suture toward a remainder of the end portion of the one leaflet.

9. The prosthetic heart valve according to claim 7, wherein the folded portion includes at least two layers of the end portion of the one leaflet.

10. The prosthetic heart valve according to claim 1, wherein the folded portion is in the form of a spiral.

11. The prosthetic heart valve according to claim 1, wherein the folded portion wraps at least partially around the one commissure point.

12. The prosthetic heart valve according to claim 1, further comprising a web of material overlying the folded portion, the web of material being sutured to the folded portion and the one commissure point.

13. A prosthetic heart valve, comprising:

a collapsible and expandable stent having a proximal end and a distal end;

a plurality of commissure points disposed on the stent; and

a collapsible and expandable valve assembly disposed within the stent, the valve assembly including a plurality of leaflets, each leaflet having a free edge;

wherein an end portion of the free edge of one leaflet includes a folded portion, the folded portion being sutured to one of the plurality of commissure points, the folded portion having a configuration selected from the group consisting of a U-shaped pleat, an S-shaped pleat, a generally spiral roll and an L-shaped fold.