Low-profile prosthetic heart valve for replacing a mitral valve
First Claim
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1. A method comprising:
- introducing a delivery apparatus into a patient'"'"'s body, wherein a prosthetic valve assembly is mounted on a distal end portion of the delivery apparatus;
advancing the prosthetic valve assembly into the left ventricle of the heart of the patient;
radially expanding an anchor of the prosthetic valve assembly;
positioning axially extending fixation members of the anchor behind the native mitral valve leaflets and/or the chordae tendineae; and
radially expanding a valve component of the prosthetic valve assembly within the anchor, which causes the fixation members to pivot inwardly against the native mitral valve leaflets, thereby clamping the native mitral valve leaflets between the anchor and the valve component.
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Abstract
In one representative embodiment, a prosthetic valve assembly comprises a valve component comprising a radially compressible and expandable frame and a valve structure supported inside of the frame. The valve structure is configured to allow blood to flow through the valve component in one direction and block the flow of blood in the opposite direction. The assembly further comprises a radially compressible and expandable anchor comprising an annular base and a plurality of cantilevered fixation members extending from the base. The fixation members are configured to pivot inwardly toward the valve component when the valve component is radially expanded within the anchor.
322 Citations
20 Claims
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1. A method comprising:
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introducing a delivery apparatus into a patient'"'"'s body, wherein a prosthetic valve assembly is mounted on a distal end portion of the delivery apparatus; advancing the prosthetic valve assembly into the left ventricle of the heart of the patient; radially expanding an anchor of the prosthetic valve assembly; positioning axially extending fixation members of the anchor behind the native mitral valve leaflets and/or the chordae tendineae; and radially expanding a valve component of the prosthetic valve assembly within the anchor, which causes the fixation members to pivot inwardly against the native mitral valve leaflets, thereby clamping the native mitral valve leaflets between the anchor and the valve component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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introducing a delivery apparatus into a patient'"'"'s body, wherein a prosthetic valve assembly is mounted on a distal end portion of the delivery apparatus, wherein the prosthetic valve assembly comprises an anchor having a plurality of cantilevered fixation members extending from an annular base of the anchor and a valve component axially separated from the anchor comprising a radially compressible and expandable frame and a valve structure supported inside the frame; radially expanding the anchor; positioning the fixation members behind the native mitral valve leaflets and/or the chordae tendineae of the patient; after positioning the fixation members behind the native mitral valve leaflets and/or the chordae tendineae of the patient, moving the valve component axially to a location within the anchor; and after moving the valve component axially to a location within the anchor, radially expanding the valve component, which causes the fixation members to pivot inwardly against the native mitral valve leaflets, thereby clamping the native mitral valve leaflets between the anchor and the valve component. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method comprising:
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introducing a delivery apparatus into a patient'"'"'s body, wherein a prosthetic valve assembly is mounted on a distal end portion of the delivery apparatus; advancing the prosthetic valve assembly into the left ventricle of the heart of the patient; radially expanding an anchor of the prosthetic valve assembly, the anchor comprising an annular base defining an outflow end of the anchor and a plurality of cantilevered fixation members extending axially from the annular base, each of the fixation members having a fixed end connected to the annular base and an opposing free end spaced axially from the annular base, the free ends of the fixation members defining an inflow end of the anchor; positioning the fixation members of the anchor behind the native mitral valve leaflets and/or the chordae tendineae; positioning a valve component of the prosthetic valve assembly within the annular base of the anchor; and radially expanding the valve component within the annular base of the anchor, causing the valve component to exert a radial outwardly directed force against the annular base, which causes the free ends of the fixation members to pivot inwardly inwardly against the native mitral valve leaflets, thereby clamping the native mitral valve leaflets between the anchor and the valve component.
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Specification