Device and Method for Replacing Mitral Valve
First Claim
1. A prosthetic mitral valve assembly, comprising:
- a radially-expandable stent including a first portion sized to be held in place by leaflets of a native mitral valve and a second portion having a flared end, the flared end sized to implant above or below an annulus of the mitral valve with a pressure or friction fit, wherein the stent tapers from the flared end to an opposite end of the stent; and
a valve portion coupled to the stent.
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Accused Products
Abstract
A prosthetic mitral valve assembly and method of inserting the same is disclosed. In certain disclosed embodiments, the prosthetic mitral valve assembly has a flared upper end and a tapered portion to fit the contours of the native mitral valve. The prosthetic mitral valve assembly can include a stent or outer support frame with a valve mounted therein. The assembly can be adapted to expand radially outwardly and into contact with the native tissue to create a pressure fit. One embodiment of a method includes positioning the mitral valve assembly below the annulus such that the annulus itself can restrict the assembly from moving in an upward direction towards the left atrium. The mitral valve assembly is also positioned so that the leaflets of the mitral valve hold the assembly to prevent downward movement of the assembly towards the left ventricle.
134 Citations
25 Claims
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1. A prosthetic mitral valve assembly, comprising:
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a radially-expandable stent including a first portion sized to be held in place by leaflets of a native mitral valve and a second portion having a flared end, the flared end sized to implant above or below an annulus of the mitral valve with a pressure or friction fit, wherein the stent tapers from the flared end to an opposite end of the stent; and a valve portion coupled to the stent. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of implanting a prosthetic mitral heart valve, comprising:
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inserting a prosthetic mitral valve assembly in a collapsed state into a heart using a delivery catheter; expanding the mitral valve assembly; and positioning the mitral valve assembly within a native valve so that solely pressure exerted radially outward by the mitral valve assembly holds the mitral valve assembly in position; wherein positioning the mitral valve assembly includes pulling the mitral valve assembly from the left atrium so that a flared end of the mitral valve assembly sits below an annulus of the native mitral valve and wherein the mitral valve assembly is held in place solely through radial outward pressure from the mitral valve assembly and contact between the native mitral valve leaflets and the outer surface of the valve assembly. - View Dependent Claims (18)
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19. An apparatus for replacement of a mitral valve, comprising:
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a stent having an upper end, a lower end, and an aperture there through extending from the upper to the lower end; a valve having a plurality of leaflets mounted within the stent; and at least one tension member connected at one end to at least one of the leaflets and connected at another end to the stent to lessen the amount of stress transferred to the at least one leaflet. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification