Replacement mitral valve
First Claim
Patent Images
1. A prosthesis for placement within a native mitral valve having a native mitral valve annulus, the prosthesis comprising:
- an expandable frame comprising a proximal end, a distal end, a middle region extending between the proximal and distal ends, and a longitudinal axis extending therethrough, the expandable frame configured to radially expand and contract for deployment within the native mitral valve, the middle region having a larger cross-sectional dimension than the proximal and distal ends when the expandable frame is in an expanded configuration;
a distal anchoring portion comprising a first set of distal anchors and a second set of distal anchors, at least a portion of each distal anchor of the first set and the second set extending generally proximally when the expandable frame is in an expanded configuration, each distal anchor of the first set comprising a first individual cushion and each distal anchor of the second set comprising a second individual cushion smaller than the first individual cushion such that each distal anchor of the first set is larger than each distal anchor of the second set, the first and second individual cushions being made from a fabric material and being adapted for reducing trauma to surrounding tissue and extending at least a majority of a length of each distal anchor; and
a valve body positioned within an interior of the expandable frame, wherein the valve body comprises a plurality of leaflets configured to allow flow in a first direction and prevent flow in a second opposite direction.
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Abstract
A prosthesis can be configured to grasp intralumenal tissue when deployed within a body cavity and prevent axial flow of fluid around an exterior of the prosthesis. The prosthesis can include an expandable frame configured to radially expand and contract for deployment within the body cavity, and an annular flap positioned around an exterior of the expandable frame. In some embodiments, the annular flap can extend outward from the frame and have a collapsed configuration and an expanded configuration.
435 Citations
18 Claims
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1. A prosthesis for placement within a native mitral valve having a native mitral valve annulus, the prosthesis comprising:
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an expandable frame comprising a proximal end, a distal end, a middle region extending between the proximal and distal ends, and a longitudinal axis extending therethrough, the expandable frame configured to radially expand and contract for deployment within the native mitral valve, the middle region having a larger cross-sectional dimension than the proximal and distal ends when the expandable frame is in an expanded configuration; a distal anchoring portion comprising a first set of distal anchors and a second set of distal anchors, at least a portion of each distal anchor of the first set and the second set extending generally proximally when the expandable frame is in an expanded configuration, each distal anchor of the first set comprising a first individual cushion and each distal anchor of the second set comprising a second individual cushion smaller than the first individual cushion such that each distal anchor of the first set is larger than each distal anchor of the second set, the first and second individual cushions being made from a fabric material and being adapted for reducing trauma to surrounding tissue and extending at least a majority of a length of each distal anchor; and a valve body positioned within an interior of the expandable frame, wherein the valve body comprises a plurality of leaflets configured to allow flow in a first direction and prevent flow in a second opposite direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification