Retaining mechanisms for prosthetic valves

Patent metadata

Field	Value
Publication number	US-12090049-B2
Application number	US-202117220818-A
Country	US
Kind code	B2
Filing date	Apr 1, 2021
Priority date	Jun 20, 2008
Publication date	Sep 17, 2024
Grant date	Sep 17, 2024

Abstract

Prosthetic valve systems for treating a native valve exhibiting regurgitation can include a support structure in which a separate prosthetic heart valve can be placed. A method for implant a prosthetic valve system can include advancing a first catheter delivery sheath through an introducer sheath and into a left ventricle of a patient's heart, deploying at least a portion of a support structure from the first catheter delivery sheath and positioning the support structure around native leaflets of the patient's native mitral valve, positioning a prosthetic heart valve in a radially collapsed configuration within the patient's native mitral valve, and expanding the prosthetic heart valve from the radially collapsed configuration to a radially expanded configuration, wherein the prosthetic heart valve contacts the native leaflets from within the patient's native mitral valve and is separated from the support structure by the native leaflets.

First claim

What is claimed is:

1. A method comprising:
advancing a first catheter delivery sheath through an introducer sheath and into a left ventricle of a patient's heart;
deploying at least a portion of a support structure from the first catheter delivery sheath and positioning the support structure around native leaflets of the patient's native mitral valve;
positioning a prosthetic heart valve in a radially collapsed configuration within the patient's native mitral valve;
withdrawing the first catheter delivery sheath from the introducer sheath prior to positioning the prosthetic heart valve within the patient's native mitral valve; and
expanding the prosthetic heart valve from the radially collapsed configuration to a radially expanded configuration, wherein the prosthetic heart valve contacts the native leaflets from within the patient's native mitral valve and is separated from the support structure by the native leaflets.

2. The method of claim 1 , further comprising advancing a second catheter delivery sheath through the introducer sheath and into the left ventricle of the patient's heart.

3. The method of claim 2 , wherein deploying at least a portion of the support structure from the first catheter delivery sheath comprises deploying a first portion of the support structure from the first catheter delivery sheath and deploying a second portion of the support structure from the second catheter delivery sheath.

4. The method of claim 3 , further comprising withdrawing the first catheter delivery sheath and the second catheter delivery sheath from the introducer sheath prior to positioning the prosthetic heart valve within the patient's native mitral valve.

5. The method of claim 1 , further comprising securing the support structure in an extended position around the native leaflets.

6. The method of claim 1 , wherein positioning the prosthetic heart valve in the radially collapsed configuration within the patient's native mitral valve comprises disposing the prosthetic heart valve in the radially collapsed configuration around a distal end portion of a delivery apparatus and advancing the distal end portion of the delivery apparatus and the prosthetic heart valve into the patient's native mitral valve.

7. The method of claim 6 , wherein the distal end portion of the delivery apparatus comprises an inflatable balloon, and wherein expanding the prosthetic heart valve to the radially expanded configuration comprises inflating the inflatable balloon.

8. The method of claim 6 , wherein advancing the distal end portion of the delivery apparatus into the patient's native mitral valve comprises advancing the distal end portion through the patient's femoral vasculature.

9. The method of claim 1 , wherein positioning at least a portion of the support structure around the native leaflets comprises positioning the support structure to extend around chordae tendineae of the patient's native mitral valve.

10. A method of implanting a prosthetic mitral valve, the method comprising:
advancing a first shaft into a patient's vasculature;
advancing a second shaft through the first shaft and into a left ventricle of the patient's heart;
deploying at least a portion of a support structure from the second shaft such that the support structure extends around leaflets of a native mitral valve within the patient's heart;
withdrawing the second shaft from the first shaft;
advancing a distal end portion of a third shaft through the first shaft and into the native mitral valve, wherein a prosthetic heart valve is mounted on the distal end portion of the third shaft in a radially collapsed configuration; and
expanding the prosthetic heart valve from the radially collapsed configuration to a radially expanded configuration, wherein the prosthetic heart valve engages the leaflets of the native mitral valve from within the native mitral valve.

11. The method of claim 10 , further comprising securing the support structure in an extended position around the leaflets of the native mitral valve.

12. The method of claim 10 , wherein the distal end portion of the third shaft comprises an inflatable balloon, and wherein expanding the prosthetic heart valve to the radially expanded configuration comprises inflating the inflatable balloon.

13. The method of claim 10 , wherein advancing the distal end portion of the third shaft into the native mitral valve comprises advancing the distal end portion through the patient's femoral vasculature.

14. The method of claim 10 , wherein deploying at least a portion of a support structure comprises positioning the support structure to extend around chordae tendineae of the native mitral valve.

15. A method comprising:
advancing a delivery sheath of a first delivery apparatus into a left ventricle of a patient's heart;
deploying at least a portion of a support structure from the delivery sheath and positioning the support structure to extend around chordae tendineae of the patient's native mitral valve;
advancing a distal end portion of a second delivery apparatus into the patient's native mitral valve with a prosthetic heart valve disposed around the distal end portion of the second delivery apparatus in a radially collapsed configuration; and
expanding the prosthetic heart valve from the radially collapsed configuration to a radially expanded configuration, wherein the prosthetic heart valve engages the patient's native mitral valve is disposed radially inwardly from the support structure.

16. The method of claim 15 , wherein advancing the delivery sheath into the left ventricle of the patient's heart comprises advancing the delivery sheath through an outer shaft.

17. The method of claim 16 , further comprising withdrawing the delivery sheath from the outer shaft prior to advancing the distal end portion of the second delivery apparatus into the patient's native mitral valve.

18. The method of claim 15 , wherein the distal end portion of the second delivery apparatus comprises an inflatable balloon, and wherein expanding the prosthetic heart valve to the radially expanded configuration comprises inflating the inflatable balloon.

19. The method of claim 15 , wherein advancing the distal end portion of the second delivery apparatus into the patient's native mitral valve comprises advancing the distal end portion of the second delivery apparatus through the patient's femoral vasculature.

Assignees

• Edwards Lifesciences Corp

Inventors

• Rowe Stanton J
• Maisano Francesco
• Meiri Oded

Classifications

• A61F2310/00023

  Titanium or titanium-based alloys, e.g. Ti-Ni alloys · CPC title

• A61F2/2409

  Support rings therefor, e.g. for connecting valves to tissue (annuloplasty rings A61F2/2442) · CPC title

• A61F2/2433

  using balloon catheter · CPC title

• A61F2/2445

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

• A61M2025/0004

  having two or more concentrically arranged tubes for forming a concentric catheter system · CPC title