PROSTHETIC VALVE FOR REPLACING MITRAL VALVE
First Claim
1. A prosthetic apparatus for implanting at the native mitral valve region of the heart, the native mitral valve having a native annulus and native valve leaflets, the prosthetic apparatus comprising:
- a main body comprising a lumen and configured for placement within the native annulus, the main body being radially compressible to a radially compressed state for delivery into the heart and self-expandable from the compressed state to a radially expanded state;
at least one anchor coupled to and disposed outside of the main body, the anchor being coupled to the main body such that when the main body is compressed to the compressed state, a leaflet-receiving space between the anchor and an outer surface of the main body increases to receive a native valve leaflet therebetween, and when the main body expands to the expanded state in the absence of any radial inward forces on the main body or the anchor, the space decreases to capture the leaflet between the outer surface of the main body and the anchor.
1 Assignment
0 Petitions
Accused Products
Abstract
Embodiments of prosthetic valves for implantation within a native mitral valve are provided. A preferred embodiment of a prosthetic valve includes a radially compressible main body and a one-way valve portion. The prosthetic valve further comprises at least one ventricular anchor coupled to the main body and disposed outside of the main body. A space is provided between an outer surface of the main body and the ventricular anchor for receiving a native mitral valve leaflet. The prosthetic valve preferably includes an atrial sealing member adapted for placement above the annulus of the mitral valve. Methods and devices for delivering and implanting the prosthetic valve are also described.
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Citations
20 Claims
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1. A prosthetic apparatus for implanting at the native mitral valve region of the heart, the native mitral valve having a native annulus and native valve leaflets, the prosthetic apparatus comprising:
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a main body comprising a lumen and configured for placement within the native annulus, the main body being radially compressible to a radially compressed state for delivery into the heart and self-expandable from the compressed state to a radially expanded state; at least one anchor coupled to and disposed outside of the main body, the anchor being coupled to the main body such that when the main body is compressed to the compressed state, a leaflet-receiving space between the anchor and an outer surface of the main body increases to receive a native valve leaflet therebetween, and when the main body expands to the expanded state in the absence of any radial inward forces on the main body or the anchor, the space decreases to capture the leaflet between the outer surface of the main body and the anchor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A prosthetic apparatus for implanting at the native mitral valve region of the heart, the native mitral valve having a native annulus and native valve leaflets, the leaflets comprising a free edge portion and an annulus connection portion, the prosthetic apparatus comprising:
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a main body configured for placement within the native mitral valve, the main body being compressible to a compressed state for delivery into the heart and expandable from the compressed state to an expanded state; at least one ventricular anchor coupled to and disposed outside of the main body such that, in the expanded state, a leaflet-receiving space exists between the ventricular anchor and an outer surface of the main body to receive a free edge portion of a native valve leaflet, the ventricular anchor comprising an engagement portion configured to extend behind the received native leaflet and engage a ventricular surface of the native mitral annulus, the annulus connection portion of the received native leaflet, or both the ventricular surface of the native annulus and the annulus connection portion of the received native leaflet, while the free edge portion of the received native leaflet is not engaged by the ventricular anchor; and at least one atrial anchor coupled to and disposed outside of the main body, the at least one atrial anchor being configured to engage an atrial portion of the native mitral annulus, the annulus connection portion of the received native leaflet, or both the atrial surface of the native annulus and the annulus connection portion of the received native leaflet, at a location opposite the engagement portion of the ventricular anchor for retention of the prosthetic apparatus. - View Dependent Claims (11, 12, 13, 14)
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15. A device for delivering a prosthetic apparatus to the mitral valve region of the heart, comprising:
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an inner sheath comprising a distal end portion having at least one longitudinal slot extending proximally from a distal end of the inner sheath, the distal end portion of the inner sheath being configured to contain the prosthetic apparatus within the inner sheath in a radially compressed state; and an outer sheath positioned concentrically around the inner sheath, wherein at least one of the inner sheath and the outer sheath is movable axially relative to the other between a first position, in which the outer sheath extends over at least a portion of the longitudinal slot, and a second position, in which the at least a portion of the longitudinal slot is uncovered by the outer sheath so as to allow a portion of the prosthetic apparatus contained within the inner sheath to expand radially outward through the longitudinal slot. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification