Prosthetic valve for replacing mitral valve

Patent metadata

Field	Value
Publication number	US-9433500-B2
Application number	US-201514801713-A
Country	US
Kind code	B2
Filing date	Jul 16, 2015
Priority date	Dec 4, 2009
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

A prosthetic apparatus configured for implantation in the native mitral valve region of the heart includes a main body that is self-expandable from a compressed state to a radially expanded state. The prosthetic apparatus comprises at least one ventricular anchor coupled to the main body and disposed outside of the main body for capturing a native valve leaflet between the anchor and an outer surface of the main body. In one preferred method of implantation, the prosthetic apparatus is rotated within the native mitral valve region such that a portion of the anchor moves horizontally behind adjacent chordae for anchoring the prosthetic apparatus in the native mitral valve.

First claim

We claim:

1. A method of implanting a prosthetic apparatus in a defective native mitral valve without requiring open heart surgery or cardiopulmonary bypass, the method comprising:
advancing a prosthetic apparatus toward a mitral valve annulus, the prosthetic apparatus comprising a main body in a radially compressed state and a valve structure supported within the main body, the prosthetic apparatus further comprising at least one ventricular anchor coupled to the main body and disposed outside the main body;
guiding the ventricular anchor between chordae and behind a native mitral valve leaflet;
rotating the prosthetic apparatus such that the ventricular anchor moves horizontally behind chordae for capturing chordae between the ventricular anchor and the main body; and
allowing the main body to expand from the radially compressed state to a radially expanded state within the mitral valve annulus;
wherein, after implantation, chordae are positioned between the ventricular anchor and the main body for securing the prosthetic apparatus in the mitral valve annulus.

2. The method of claim 1 , wherein the ventricular anchor extends upwardly from an outflow end of the main body.

3. The method of claim 1 , wherein the ventricular anchor comprises a vertical leg portion and a horizontal foot portion.

4. The method of claim 3 , wherein the horizontal foot portion is curved for wrapping around the main body.

5. The method of claim 1 , wherein the valve structure comprises pericardial tissue.

6. The method of claim 1 , wherein the at least one ventricular anchor comprises a plurality of ventricular anchors.

7. The method of claim 1 , wherein the prosthetic apparatus further comprises an atrial sealing member adapted for placement above the mitral valve annulus.

8. The method of claim 1 , wherein the prosthetic apparatus comprises a shape-memory material.

9. The method of claim 1 , wherein the prosthetic apparatus is advanced toward the mitral valve annulus using a catheter.

10. The method of claim 9 , wherein the catheter is steerable.

11. The method of claim 9 , wherein the prosthetic apparatus is advanced using a transatrial approach.

12. The method of claim 9 , wherein the prosthetic apparatus is advanced using a transseptal approach.

13. A method of implanting a prosthetic apparatus in a defective native mitral valve without requiring open heart surgery or cardiopulmonary bypass, the method comprising:
advancing a prosthetic apparatus toward a mitral valve annulus, the prosthetic apparatus comprising a radially collapsible and expandable main body and a valve structure supported within the main body, the prosthetic apparatus further comprising first and second ventricular anchors coupled to the main body and disposed outside the main body;
guiding the first ventricular anchor behind an anterior leaflet of the native mitral valve;
guiding the second ventricular anchor behind a posterior leaflet of the native mitral valve;
rotating the prosthetic apparatus such that portions of the ventricular anchors move horizontally for capturing chordae between the ventricular anchors and the main body; and
allowing the main body to radially expand from a compressed state to an expanded state within the mitral valve annulus.

14. The method of claim 13 , wherein the first and second ventricular anchors are coupled to an outflow end of the main body.

15. The method of claim 13 , wherein the first and second ventricular anchors each comprises a vertical leg portion and a horizontal foot portion, the horizontal portion terminating in an engagement portion.

16. The method of claim 15 , wherein the horizontal foot portions wrap around the main body.

17. The method of claim 13 , wherein the valvular structure comprises pericardial tissue.

18. The method of claim 13 , wherein the prosthetic apparatus further comprises an atrial sealing member for placement above the mitral valve annulus.

19. The method of claim 13 , wherein the prosthetic apparatus comprises a shape-memory material.

20. The method of claim 13 , wherein the prosthetic apparatus is advanced across the septum and toward the mitral valve annulus using a catheterization technique.

Assignees

• Edwards Lifesciences Corp

Inventors

• Chau Mark
• Patterson Marlowe E
• Yi Seung-Beom
• Geist Stephen C
• Oba Travis

Classifications

• A61F2/2427

  Devices for manipulating or deploying heart valves during implantation · CPC title

• A61F2/2445

  Annuloplasty rings in direct contact with the valve annulus · CPC title

• A61F2250/0063

  Nested prosthetic parts · CPC title

• A61F2250/006

  modular · CPC title

• A61F2/246

  Devices for obstructing a leak through a native valve in a closed condition · CPC title