Mitral prosthesis and methods for implantation
First Claim
1. Apparatus comprising a mitral valve prosthesis for implantation at a native mitral valve complex of a subject, the prosthesis comprising:
- an inner support structure having a downstream section and an upstream section, the upstream section having a cross-sectional area greater than the downstream section, the inner support structure being configured to be positioned at least partially on an atrial side of the native valve complex, and to prevent the prosthesis from being dislodged into a left ventricle by applying an axial force directed toward the left ventricle;
a prosthetic valve having prosthetic valve leaflets coupled to the inner support structure; and
an outer support structure coupled to the inner support structure, the outer support structure having more than two arms, wherein the more than two arms of the outer support structure extend in an upstream direction, are disposed radially outside of the inner support structure, and at least partially overlap the inner support structure, wherein a first arm of the more than two arms is longer than a second arm of the more than two arms, and wherein at least the first arm is configured to clamp portions of leaflets of the native valve between the inner support structure and the first arm.
1 Assignment
0 Petitions
Accused Products
Abstract
Apparatus and methods are provided including a mitral valve prosthesis. The prosthesis includes an inner support structure having downstream and upstream sections, the upstream section having a cross-sectional area greater than the downstream section. The inner support structure is configured to be positioned on an atrial side of the native valve complex, and to prevent the prosthesis from being dislodged into the left ventricle. A prosthetic valve having prosthetic valve leaflets is coupled to the inner support structure. An outer support structure has engagement arms, downstream ends of the engagement arms being coupled to the inner support structure. The prosthesis is configured such that, upon implantation thereof:
- downstream ends of the native valve leaflets,
- downstream ends of the engagement arms, and
- downstream ends of the prosthetic leaflets,
- are disposed at a longitudinal distance from one another of less than 3 mm. Other embodiments are also described.
106 Citations
12 Claims
-
1. Apparatus comprising a mitral valve prosthesis for implantation at a native mitral valve complex of a subject, the prosthesis comprising:
-
an inner support structure having a downstream section and an upstream section, the upstream section having a cross-sectional area greater than the downstream section, the inner support structure being configured to be positioned at least partially on an atrial side of the native valve complex, and to prevent the prosthesis from being dislodged into a left ventricle by applying an axial force directed toward the left ventricle; a prosthetic valve having prosthetic valve leaflets coupled to the inner support structure; and an outer support structure coupled to the inner support structure, the outer support structure having more than two arms, wherein the more than two arms of the outer support structure extend in an upstream direction, are disposed radially outside of the inner support structure, and at least partially overlap the inner support structure, wherein a first arm of the more than two arms is longer than a second arm of the more than two arms, and wherein at least the first arm is configured to clamp portions of leaflets of the native valve between the inner support structure and the first arm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
Specification