Replacement valve and method
First Claim
Patent Images
1. An intralumenal valve assembly for deployment at a diseased native valve, the intralumenal valve assembly comprising:
- an expandable frame comprising a proximal end, a distal end, and a longitudinal axis extending therethrough, the frame configured to radially expand and collapse for deployment at the diseased native valve, wherein the frame comprises a plurality of struts defining a plurality of cells and wherein a diameter of the proximal end is less than a diameter of a portion of the frame located distal to the proximal end, the portion of the frame located distal to the proximal end being configured to be positioned about a native valve annulus; and
a valve body comprising;
a valve skirt attached to the expandable frame, the valve skirt comprising a proximal end positioned near the proximal end of the frame and extending longitudinally along a length of the frame to a distal end at or near the distal end of the frame, wherein the proximal end of the valve skirt comprises edges extending at least partially distally from a proximalmost portion of the valve skirt along a length of the frame so that portions of the plurality of cells are exposed proximal to the edges, the exposed portions of the cells forming openings between struts of the frame to permit the entry of blood into the expandable frame generally transverse to the longitudinal axis, wherein the proximalmost portion of the valve skirt is spaced distally from the proximal end of the frame; and
a plurality of valve leaflets attached to the skirt, wherein each of the valve leaflets extends between a fixed proximal edge and a free distal edge, the free distal edges configured to open to allow flow in a first direction from the frame proximal end to the frame distal end and configured to alternatively close to prevent flow in a second direction from the frame distal end to the frame proximal end.
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Accused Products
Abstract
A replacement valve has an expandable frame configured to engage a native valve and a valve body mounted to the expandable frame. The valve body can have a plurality of valve leaflets configured to open to allow flow in a first direction and engage one another so as to close and prevent flow in a second direction, the second direction being opposite the first direction.
628 Citations
19 Claims
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1. An intralumenal valve assembly for deployment at a diseased native valve, the intralumenal valve assembly comprising:
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an expandable frame comprising a proximal end, a distal end, and a longitudinal axis extending therethrough, the frame configured to radially expand and collapse for deployment at the diseased native valve, wherein the frame comprises a plurality of struts defining a plurality of cells and wherein a diameter of the proximal end is less than a diameter of a portion of the frame located distal to the proximal end, the portion of the frame located distal to the proximal end being configured to be positioned about a native valve annulus; and a valve body comprising; a valve skirt attached to the expandable frame, the valve skirt comprising a proximal end positioned near the proximal end of the frame and extending longitudinally along a length of the frame to a distal end at or near the distal end of the frame, wherein the proximal end of the valve skirt comprises edges extending at least partially distally from a proximalmost portion of the valve skirt along a length of the frame so that portions of the plurality of cells are exposed proximal to the edges, the exposed portions of the cells forming openings between struts of the frame to permit the entry of blood into the expandable frame generally transverse to the longitudinal axis, wherein the proximalmost portion of the valve skirt is spaced distally from the proximal end of the frame; and a plurality of valve leaflets attached to the skirt, wherein each of the valve leaflets extends between a fixed proximal edge and a free distal edge, the free distal edges configured to open to allow flow in a first direction from the frame proximal end to the frame distal end and configured to alternatively close to prevent flow in a second direction from the frame distal end to the frame proximal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An intralumenal valve assembly for deployment at a diseased native valve, the intralumenal valve assembly comprising:
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an expandable frame comprising a proximal end, a distal end, and a longitudinal axis extending therethrough, the frame configured to radially expand and collapse for deployment at the diseased native valve, wherein the frame comprises a plurality of struts defining a plurality of cells and wherein a diameter of the proximal end is less than a diameter of a portion of the frame located distal to the proximal end, the portion of the frame located distal to the proximal end being configured to be positioned about a native valve annulus; and a valve body comprising; a valve skirt attached to the expandable frame, the valve skirt comprising a proximal end positioned at or near the proximal end of the frame and extending longitudinally along a length of the frame to a distal end at or near the distal end of the frame, wherein the proximal end of the valve skirt comprises edges extending at least partially distally from a proximalmost portion of the valve skirt along a length of the frame so that portions of the plurality of cells are exposed proximal to the edges, the exposed portions of the cells forming openings between struts of the frame to permit the entry of blood into the expandable frame generally transverse to the longitudinal axis; and a plurality of valve leaflets attached to the skirt, wherein each of the valve leaflets extends between a fixed proximal edge and a free distal edge, the free distal edges configured to open to allow flow in a first direction from the frame proximal end to the frame distal end and configured to alternatively close to prevent flow in a second direction from the frame distal end to the frame proximal end, wherein the proximal end of the valve skirt comprises scalloped, arcuate edges; wherein each of the fixed, proximal edges of the valve leaflets has an arcuate shape; and wherein each of the fixed, proximal edges of the valve leaflets is secured to one of the scalloped, arcuate edges of the valve skirt.
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12. An intralumenal valve assembly for deployment at a diseased native valve, the intralumenal valve assembly comprising:
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an expandable frame comprising a proximal end, a distal end, and a longitudinal axis extending therethrough, the frame configured to radially expand and collapse for deployment at the diseased native valve, wherein the frame comprises a plurality of struts defining a plurality of cells and wherein a diameter of the proximal end is less than a diameter of a portion of the frame located distal to the proximal end, the portion of the frame located distal to the proximal end being configured to be positioned about a native valve annulus; and a valve body comprising; a valve skirt attached to the expandable frame, the valve skirt comprising a proximal end positioned at or near the proximal end of the frame and extending longitudinally along a length of the frame to a distal end at or near the distal end of the frame, wherein the proximal end of the valve skirt comprises edges extending at least partially distally from a proximalmost portion of the valve skirt along a length of the frame so that portions of the plurality of cells are exposed proximal to the edges, the exposed portions of the cells forming openings between struts of the frame to permit the entry of blood into the expandable frame generally transverse to the longitudinal axis; and a plurality of valve leaflets attached to the skirt, wherein each of the valve leaflets extends between a fixed proximal edge and a free distal edge, the free distal edges configured to open to allow flow in a first direction from the frame proximal end to the frame distal end and configured to alternatively close to prevent flow in a second direction from the frame distal end to the frame proximal end, wherein the frame comprises undulating struts at its distal end, and the distal end of the valve skirt has an undulating shape corresponding to the undulating struts at the distal end of the frame.
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13. An intralumenal valve assembly for deployment at a diseased native valve, the intralumenal valve assembly comprising:
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an expandable frame comprising a proximal end, a distal end, and a longitudinal axis extending therethrough, the frame configured to radially expand and collapse for deployment at the diseased native valve, wherein the frame comprises a plurality of struts defining a plurality of cells and wherein a diameter of the proximal end is less than a diameter of a portion of the frame located distal to the proximal end, the portion of the frame located distal to the proximal end being configured to be positioned about a native valve annulus; and a valve body comprising; a valve skirt attached to the expandable frame, the valve skirt comprising a proximal end positioned at or near the proximal end of the frame and extending longitudinally along a length of the frame to a distal end at or near the distal end of the frame, wherein the proximal end of the valve skirt comprises edges extending at least partially distally from a proximalmost portion of the valve skirt along a length of the frame so that portions of the plurality of cells are exposed proximal to the edges, the exposed portions of the cells forming openings between struts of the frame to permit the entry of blood into the expandable frame generally transverse to the longitudinal axis; and a plurality of valve leaflets attached to the skirt, wherein each of the valve leaflets extends between a fixed proximal edge and a free distal edge, the free distal edges configured to open to allow flow in a first direction from the frame proximal end to the frame distal end and configured to alternatively close to prevent flow in a second direction from the frame distal end to the frame proximal end, wherein the valve skirt comprises three valve skirt portions connected to each other at connecting edges that extend only partially along a length of the frame.
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14. An intralumenal valve assembly for deployment at a native mitral valve, the intralumenal valve assembly comprising:
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an expandable frame comprising; a proximal end, a distal end, and a longitudinal axis extending therethrough, the frame configured to radially expand and collapse for deployment at the native mitral valve and wherein a diameter of the proximal end is less than a diameter of a portion of the frame located distal to the proximal end, the portion of the frame located distal to the proximal end being configured to be positioned about a native mitral valve annulus; a first set of anchors comprising ends extending proximally, the ends configured to contact the native mitral valve annulus on a left ventricular side; a valve body, wherein the valve body has a proximal end spaced distally from the proximal end of the frame; and a support band at or near the proximal end of the frame, the support band being positioned proximal to the valve body and configured to limit expansion of the expandable frame. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification