Transcatheter valve with paravalvular leak sealing ring

• US 9,668,858 B2
• Filed: 05/12/2015
• Issued: 06/06/2017
• Est. Priority Date: 05/16/2014
• 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: Morin, Kristen T., Para, Andrea N., Khouengboua, Sounthara, Kumar, Saravana B., Braido, Peter N., Benson, Thomas M., Moseman, Bruce, Satam, Gaurav
• Primary Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US14/709,560
• Publication Number:
  US 20150327995A1
• Time in Patent Office: 756 Days
• Field of Search: 623 21- 219
• 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 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/2472 Devices for testing
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2210/0061 swellable
• 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 2230/001 Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: A61F 2230/0017 Angular shapes
• CPC Class Codes: A61F 2230/0019 rectangular
• CPC Class Codes: A61F 2230/0034 D-shaped
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2250/0069 Sealing means

Abstract

A prosthetic heart valve includes a collapsible and expandable stent extending from an inflow end to an outflow end and a plurality of prosthetic valve leaflets coupled to the stent. The prosthetic heart valve may also include a sealing ring coupled to the inflow end of the stent, the sealing ring comprising a tube extending circumferentially around the inflow end of the stent. The tube may be formed from a wire coiled into a repeating shape, such as a rectangle or a diamond, so that the tube is collapsible. A covering may at least partially surround the tube. The sealing ring may include a first filler positioned within the tube and/or a second filler positioned between the tube and the covering.

Claims

1. A prosthetic heart valve comprising:

a collapsible and expandable stent extending from an inflow end to an outflow end;

a plurality of prosthetic valve leaflets coupled to the stent, each leaflet having a leaflet belly; and

a sealing ring coupled stent adjacent the inflow end of the stent, the sealing ring comprising a tube extending circumferentially around the inflow end of the stent, the sealing ring being axially offset from the leaflet belly when the stent is in a collapsed condition,

wherein the tube includes a wire coiled into a repeating shape such that the tube is collapsible.

2. The prosthetic heart valve of claim 1, wherein the wire is coiled into a rectangular shape.

3. The prosthetic heart valve of claim 1, wherein the wire is coiled into a diamond shape having a major axis and a minor axis.

4. The prosthetic heart valve of claim 3, wherein the major axis is approximately 3 mm and the minor axis is approximately 2 mm.

5. The prosthetic heart valve of claim 3, wherein the major axis is approximately 4 mm and the minor axis is approximately 2 mm.

6. The prosthetic heart valve of claim 3, wherein the major axis is approximately 4 mm and the minor axis is approximately 3 mm.

7. The prosthetic heart valve of claim 1, wherein the wire has a thickness of between approximately 0.05 mm and approximately 0.175 mm.

8. The prosthetic heart valve of claim 1, wherein the wire has a thickness and there is a distance between adjacent repeating shapes of the coiled wire, a ratio of the thickness to the distance being between approximately 1:

6 and approximately 1;

32.

9. A prosthetic heart valve comprising:

a collapsible and expandable stent extending from an inflow end to an outflow end;

a plurality of prosthetic valve leaflets coupled to the stent, each leaflet having a leaflet belly; and

a sealing ring coupled to the inflow end of the stent, the sealing ring comprising a tube extending circumferentially around the inflow end of the stent, a covering at least partially surrounding the tube, and at least one of a first filler positioned within the tube and a second filler positioned between the tube and the covering, the sealing ring being axially offset from the leaflet belly when the stent is in a collapsed condition.

10. The prosthetic heart valve of claim 9, wherein the covering is formed from a material selected form the group consisting of tissues, fabrics, and polymers.

11. The prosthetic heart valve of claim 9, wherein at least one of the first filler and the second filler is formed from a material selected from the group consisting of metals, tissues, fabrics, polymers, and water-swellable materials.

12. The prosthetic heart valve of claim 9, wherein at least one of the first filler and the second filler is configured to expand upon exposure to blood.

13. A prosthetic heart valve comprising:

a collapsible and expandable stent extending from an inflow end to an outflow end;

a plurality of prosthetic valve leaflets coupled to the stent, each leaflet having a leaflet belly; and

a sealing ring coupled to the inflow end of the stent, the sealing ring comprising a tube extending circumferentially around the inflow end of the stent and a covering at least partially surrounding the tube, the sealing ring being axially offset from the leaflet belly when the stent is in a collapsed condition

wherein the covering has a first edge and a second edge, the first edge coupled to the stent by a first thread.

14. The prosthetic heart valve of claim 13, wherein the first thread couples the first edge of the covering and the tube to the stent.

15. The prosthetic heart valve of claim 13, further comprising a second thread coupling the second edge of the covering to the tube.

16. The prosthetic heart valve of claim 15, wherein the second thread is formed of an elastic material.

17. The prosthetic heart valve of claim 13, wherein the first thread couples the second edge of the covering to the first edge of the covering and the stent.

18. The prosthetic heart valve of claim 17, wherein the first thread is formed of an elastic material.

19. The prosthetic heart valve of claim 18, wherein the elastic material is silicone.