Retaining Mechanisms for Prosthetic Valves
First Claim
1. A method of treating a deficient mitral valve, comprising:
- delivering a support band to a position within a left ventricle adjacent an outflow side of a native mitral valve such that the support band surrounds at least a portion of one or more native leaflets of the native mitral valve;
delivering a prosthetic heart valve into an interior of the native mitral valve, the prosthetic heart valve comprising a collapsible and expandable stent and a valve structure formed with pericardial tissue, the prosthetic heart valve being separate from the support band; and
expanding the prosthetic heart valve within the native mitral valve so that the native leaflets of the native mitral valve are frictionally secured between the support band and an outer wall of the stent of the prosthetic heart valve.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed herein are representative embodiments of methods, apparatus, and systems used to deliver a prosthetic heart valve to a deficient valve. In one embodiment, for instance, a support stent is delivered to a position on the surface of the outflow side of a native heart valve of a patient, the support stent defining a support-stent interior. An expandable prosthetic heart valve is delivered into the native heart valve from the inflow side of the native heart valve and into the support-stent interior. The expandable prosthetic heart valve is expanded while the expandable prosthetic valve is in the support-stent interior and while the support stent is at the position on the surface of the outflow side of the heart valve, thereby causing one or more of the native leaflets of the native heart valve to be frictionally secured between the support stent and the expanded prosthetic heart valve.
-
Citations
20 Claims
-
1. A method of treating a deficient mitral valve, comprising:
-
delivering a support band to a position within a left ventricle adjacent an outflow side of a native mitral valve such that the support band surrounds at least a portion of one or more native leaflets of the native mitral valve; delivering a prosthetic heart valve into an interior of the native mitral valve, the prosthetic heart valve comprising a collapsible and expandable stent and a valve structure formed with pericardial tissue, the prosthetic heart valve being separate from the support band; and expanding the prosthetic heart valve within the native mitral valve so that the native leaflets of the native mitral valve are frictionally secured between the support band and an outer wall of the stent of the prosthetic heart valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A method, comprising:
-
forming a partial loop around at least some of the chordae tendineae of a native mitral valve with a cord of biocompatible material; securing a locking member to at least two portions of the cord to form a closed loop; positioning an expandable prosthetic heart valve into an interior of the mitral valve; and expanding the expandable prosthetic heart valve, thereby causing an exterior surface of the expandable prosthetic heart valve to urge native leaflets of the mitral valve against an interior surface of the loop and to frictionally secure the expandable prosthetic heart valve to the native leaflets of the native mitral valve. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
-
17. A method, comprising:
-
advancing a first end of a support band out of a distal end of a first catheter, the support band at least partially encircling the chordae tendinae of a native mitral valve; receiving the first end of the support band in a distal end of a second catheter; advancing a locking member over the support band to form a loop; and adjusting a diameter of the loop formed by the support band and the locking member to a desired diameter and securing the locking member to the support band.
-
-
18. The method of claim 18, further comprising:
-
advancing an expandable prosthetic heart valve into the mitral valve and the interior of the loop formed by the support band and the locking member while the prosthetic heart valve is in a compressed state; and expanding the expandable prosthetic heart valve into an uncompressed state, thereby causing one or more native leaflets of the mitral valve to be frictionally secured between the loop and the expandable prosthetic heart valve. - View Dependent Claims (19, 20)
-
Specification