Prosthetic mitral valve and delivery method

Patent metadata

Field	Value
Publication number	US-12232959-B2
Application number	US-202318180230-A
Country	US
Kind code	B2
Filing date	Mar 8, 2023
Priority date	Oct 31, 2012
Publication date	Feb 25, 2025
Grant date	Feb 25, 2025

Abstract

A valve prosthesis and methods for implanting the prosthesis are provided. The prosthesis generally includes a self-expanding frame and two or more engagement arms. A valve prosthesis is sutured to the self-expanding frame. Each engagement arm corresponds to a native mitral valve leaflet. At least one engagement arm immobilizes the native leaflets, and holds the native leaflets close to the main frame. The prosthetic mitral valve frame also includes two or more anchor attachment points. Each anchor attachment point is attached to one or more anchors that help attach the valve prosthesis to the heart.

First claim

What is claimed is:

1. A method of treating a disorder of a native mitral valve in a heart, comprising:
inserting a delivery device with a mitral valve prosthesis into a left ventricle of the heart;
advancing the delivery device into the left ventricle to position the mitral valve prosthesis within the native mitral valve, wherein the mitral valve prosthesis comprises a prosthetic valve and a frame having an expandable inflow region, with a cross-sectional diameter larger than an annulus of the native mitral valve, and an expandable outflow region; and
releasing the mitral valve prosthesis from the delivery device to permit the inflow region to expand into apposition with a wall of a left atrium of the heart, and to permit the outflow region to expand into apposition with the annulus of the native mitral valve;
positioning at least one anchor between the outflow region of the mitral valve prosthesis and the heart to tether the mitral valve prosthesis to the heart; and
adjusting tension on the at least one anchor to provide stability to the mitral valve prosthesis
wherein the at least one anchor includes an anchoring element at a first end thereof, the anchoring element being configured in an open state to permit adjustment of the tension on the at least one anchor and in a closed state to attach the at least one anchor to the heart by gripping and holding the heart.

2. The method of claim 1 , wherein the anchoring element is configured to be secured to a wall of the left ventricle.

3. The method of claim 1 , wherein a second end of the at least one anchor is attached to the outflow region of the mitral valve prosthesis.

4. The method of claim 1 , wherein the at least one anchor is of a biocompatible material.

5. The method of claim 4 , wherein the at least one anchor comprises a suture.

6. The method of claim 4 , wherein the at least one anchor comprises a wire.

7. The method of claim 4 , wherein the at least one anchor comprises a chord.

8. The method of claim 1 , wherein the delivery device is inserted transfemorally or transseptally into the left ventricle of the heart.

9. The method of claim 1 , wherein the anchoring element includes a pair of jaws that are configured to include the open state and the closed state.

10. The method of claim 9 , wherein the pair of jaws are configured to allow for adjusting the tension on the at least one anchor when the pair of jaws are in the open state.

11. A method of treating a disorder of a native mitral valve in a heart, comprising:
attaching a first end of at least one anchor to a mitral valve prosthesis;
loading the mitral valve prosthesis about a deployment element of a delivery device such that a second end of the at least one anchor extends through a distal tip of the deployment element and the delivery device to be accessible exteriorly to the patient;
inserting the delivery device with the mitral valve prosthesis into a left ventricle of the heart;
advancing the delivery device into the left ventricle to position the mitral valve prosthesis within the native mitral valve, wherein the mitral valve prosthesis comprises a prosthetic valve and a frame with an expandable inflow region formed of a plurality of cells and configured to expand against a wall of a left atrium of the heart, wherein the expandable inflow region has a cross-sectional diameter larger than an annulus of the native mitral valve, and an expandable outflow region formed of a plurality of cells and configured to expand against the annulus of the native mitral valve, and wherein the frame also includes at least one engagement arm configured to secure at least one native mitral valve leaflet of the native mitral valve;
releasing the mitral valve prosthesis from the delivery device to expand against the wall of the left atrium and the annulus of the native mitral valve, wherein the at least one engagement arm of the frame secures the at least one native mitral valve leaflet;
retracting the delivery device and the deployment element while the mitral valve prosthesis remains attached via the at least one anchor to the distal tip of the deployment element of the delivery device, wherein upon completion of the retraction the at least one anchor extends through an interior of the mitral valve prosthesis with the second end of the at least one anchor being accessible exteriorly to the patient;
disengaging the second end of the at least one anchor from the distal tip of the deployment element of the delivery device and attaching the second end of the at least one anchor to an anchoring element;
inserting an anchoring element delivery device with the anchoring element transapically through the interior of the mitral valve prosthesis into the left ventricle of the heart;
positioning the at least one anchor between the outflow region of the mitral valve prosthesis and the heart, and attaching the anchoring element to the heart to tether the mitral valve prosthesis to the heart; and
adjusting tension on the at least one anchor to stabilize the mitral valve prosthesis within the native mitral valve.

12. The method of claim 11 , wherein the anchoring element is configured to be secured to a wall of the left ventricle.

13. The method of claim 11 , wherein the at least one anchor is of a biocompatible material.

14. The method of claim 13 , wherein the at least one anchor comprises a suture.

15. The method of claim 13 , wherein the at least one anchor comprises a wire.

16. The method of claim 13 , wherein the at least one anchor comprises a chord.

17. The method of claim 11 , wherein the delivery device is inserted transfemorally or transseptally into the left ventricle of the heart.

18. The method of claim 11 , wherein the anchoring element is configured in an open state to permit adjustment of the tension on the at least one anchor and in a closed state to attach the at least one anchor to the heart by gripping and holding the heart.

19. The method of claim 18 , wherein the anchoring element includes a pair of jaws that are configured to include the open state and the closed state.

20. The method of claim 19 , wherein the pair of jaws are configured to allow for adjusting the tension on the at least one anchor when the pair of jaws are in the open state.

Assignees

• Medtronic Vascular Galway Ltd

Inventors

• Duffy Niall
• Kenny Gavin
• Bartolozzi Fabio

Classifications

• A61F2250/0004

  adjustable · CPC title

• A61F2220/0075

  sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable · CPC title

• A61F2/2454

  Means for preventing inversion of the valve leaflets, e.g. chordae tendineae prostheses · CPC title

• A61F2230/008

  paraboloidal · CPC title

• A61F2230/005

  Rosette-shaped, e.g. star-shaped · CPC title