Axially anchoring collapsible and re-expandable prosthetic heart valves for various disease states
First Claim
1. A stent for use with a prosthetic heart valve for replacement of a native heart valve comprising an expandable non-woven stent body having a collapsed configuration and an expanded configuration, the stent body including an annulus section adjacent a proximal end of the stent, the annulus section including a plurality of closed cells arranged in a multiplicity of annular rows around a circumference of the stent body, the annulus section in the expanded configuration being generally tubular and adapted to engage the leaflets of the native heart valve and the annulus of the native heart valve with a proximal end of the annulus section adjacent the annulus of the native valve and a distal end of the annulus section adjacent distal ends of the native leaflets, the stent body including a plurality of latch members formed integrally with the annulus section, each of the latch members including a pair of connection struts and an engagement portion adapted to engage an exterior surface of a leaflet of the native valve, the connection struts being connected to the stent body at circumferentially-spaced locations in the annulus section and projecting distally from the locations to distal ends located distal to the annulus section, and the engagement portion being connected to the connection struts adjacent the distal ends thereof and projecting proximally from the distal ends of the connection struts to an engagement portion proximal end unconnected to other structure, each of the engagement portions being spaced from a next adjacent engagement portion around the circumference of the stent.
2 Assignments
0 Petitions
Accused Products
Abstract
A stent (10) for use in a prosthetic heart valve has an annulus section (12) adapted for placement within the ′ leaflets and annulus of the native heart valve. The annulus section has latch members (50) adapted to engage the leaflets of the native heart valve when prosthetic valve is implanted in the native valve. The latch members may hold the leaflets in engagement with the annulus section, and help to retain the prosthetic valve in position. The annulus section may have a non-circular cross-sectional shape.
90 Citations
25 Claims
- 1. A stent for use with a prosthetic heart valve for replacement of a native heart valve comprising an expandable non-woven stent body having a collapsed configuration and an expanded configuration, the stent body including an annulus section adjacent a proximal end of the stent, the annulus section including a plurality of closed cells arranged in a multiplicity of annular rows around a circumference of the stent body, the annulus section in the expanded configuration being generally tubular and adapted to engage the leaflets of the native heart valve and the annulus of the native heart valve with a proximal end of the annulus section adjacent the annulus of the native valve and a distal end of the annulus section adjacent distal ends of the native leaflets, the stent body including a plurality of latch members formed integrally with the annulus section, each of the latch members including a pair of connection struts and an engagement portion adapted to engage an exterior surface of a leaflet of the native valve, the connection struts being connected to the stent body at circumferentially-spaced locations in the annulus section and projecting distally from the locations to distal ends located distal to the annulus section, and the engagement portion being connected to the connection struts adjacent the distal ends thereof and projecting proximally from the distal ends of the connection struts to an engagement portion proximal end unconnected to other structure, each of the engagement portions being spaced from a next adjacent engagement portion around the circumference of the stent.
- 13. A stent for use with a prosthetic heart valve for replacement of a native aortic valve, the stent comprising an expandable stent body having an expanded configuration including a generally tubular annulus section extending in proximal and distal directions, a generally tubular aorta section of larger diameter than the annulus section, the aorta section being spaced distally from the annulus section, and a plurality of support struts spaced circumferentially from one another and interconnecting the annulus section with the aorta section, the annulus section including a plurality of closed cells arranged in a multiplicity of annular rows around a circumference of the stent body, the stent body further including at least one latch member connected to the stent body adjacent the annulus section, the latch member including a pair of connection struts and an engagement portion disposed outward of the annulus section in the expanded configuration, the connection struts being connected to the stent body at circumferentially-spaced locations in the annulus section and projecting distally from the locations to distal ends located distal to the annulus section, and the engagement portion being connected to the connection struts adjacent the distal ends thereof and projecting proximally from the distal ends of the connection struts, the stent body being adapted for disposition with the annulus section adjacent the annulus of the native valve and at least partially within the leaflets of the native valve, the aortic section adjacent the native sinotubular junction and the support struts extending at least partially across the native Valsalva sinus, and with the engagement portion of at least one latch member engaged with at least one native valve leaflet.
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24. A stent for use with a prosthetic heart valve for replacement of a native valve, comprising:
an expandable stent body having an expanded configuration including an annulus section having a plurality of cell struts joined to one another to form a plural number of closed cells cooperatively defining a generally tubular wall extending circumferentially around a proximal-to-distal axis, each of the cells having a distal cell crest, the distal cell crests of the cells in a most distal row of cells in the annulus section collectively defining a scalloped distal edge of the tubular wall including a number of circumferentially-spaced recess regions and a number of circumferentially-spaced projections extending distally beyond the recess regions, the projections being interspersed with the recess regions around the circumference of the tubular wall, each of the projections including a plurality of the distal cell crests and each of the recess regions including a plurality of the distal cell crests. - View Dependent Claims (25)
Specification