Magnetic retaining mechanisms for prosthetic valves
First Claim
1. A method, comprising:
- placing a guidewire around native chordae tendineae and/or native leaflets of a mitral valve of a heart, wherein the guidewire is a second guidewire, which is placed while a previously inserted first guidewire remains inside the heart and encircles the native chordae tendineae and/or native leaflets of the mitral valve;
advancing a support member over the guidewire so that the support member at least partially surrounds the native chordae tendineae and/or native leaflets of the mitral valve, the support member comprising a main body having first and second opposing ends, and a longitudinal axis extending from the first end to the second end, the support member further comprising a male magnetic member extending from the first end along the longitudinal axis and a female magnetic member at the second end and having a receiving area extending coaxially along the longitudinal axis, and wherein the support member is releasably coupled to a distal end of a shaft of a delivery catheter and advancing the support member over the guidewire comprises pushing the support member over the guidewire with the shaft;
manipulating the guidewire and/or the shaft to bring the male magnetic member and the female magnetic member into sufficient proximity to each other such that a magnetic connection is established between the male and female magnetic members, and wherein the male magnetic member slides axially into the receiving area of the female magnetic member along the longitudinal axis when the magnetic connection is established between the male and female magnetic members so as to transform the support member into a support ring; and
expanding a prosthetic heart valve inside the support ring so that the native leaflets and/or chordae tendineae are in contact with an outside surface of the prosthetic heart valve and an inside surface of the support ring.
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 member is positioned to at least partially surround the native chordae tendineae and/or leaflets of a valve. The support member can comprise a flexible, distensible material to reduce abrasion and other mechanical damage to surrounding structures. A locking member may be used to couple both ends of the support member, forming a support ring. The support member may have two magnetic end portions which can be magnetically coupled to form a support ring. An expandable prosthetic heart valve can be delivered into the native heart valve and expanded within the support band, thereby causing one or more of the native chordae tendineae and/or leaflets of the native heart valve to be frictionally secured between the support ring and the expanded prosthetic heart valve.
-
Citations
15 Claims
-
1. A method, comprising:
-
placing a guidewire around native chordae tendineae and/or native leaflets of a mitral valve of a heart, wherein the guidewire is a second guidewire, which is placed while a previously inserted first guidewire remains inside the heart and encircles the native chordae tendineae and/or native leaflets of the mitral valve; advancing a support member over the guidewire so that the support member at least partially surrounds the native chordae tendineae and/or native leaflets of the mitral valve, the support member comprising a main body having first and second opposing ends, and a longitudinal axis extending from the first end to the second end, the support member further comprising a male magnetic member extending from the first end along the longitudinal axis and a female magnetic member at the second end and having a receiving area extending coaxially along the longitudinal axis, and wherein the support member is releasably coupled to a distal end of a shaft of a delivery catheter and advancing the support member over the guidewire comprises pushing the support member over the guidewire with the shaft; manipulating the guidewire and/or the shaft to bring the male magnetic member and the female magnetic member into sufficient proximity to each other such that a magnetic connection is established between the male and female magnetic members, and wherein the male magnetic member slides axially into the receiving area of the female magnetic member along the longitudinal axis when the magnetic connection is established between the male and female magnetic members so as to transform the support member into a support ring; and expanding a prosthetic heart valve inside the support ring so that the native leaflets and/or chordae tendineae are in contact with an outside surface of the prosthetic heart valve and an inside surface of the support ring. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
Specification