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 comprising at least one row of expandable cells, 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 at least one latch member formed integrally with the annulus section, each said latch member being connected to the annulus section adjacent the distal end of the annulus section, each said latch member having an engagement portion adapted to engage an exterior surface of a leaflet of the native valve.
2 Assignments
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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.
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Citations
31 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 comprising at least one row of expandable cells, 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 at least one latch member formed integrally with the annulus section, each said latch member being connected to the annulus section adjacent the distal end of the annulus section, each said latch member having an engagement portion adapted to engage an exterior surface of a leaflet of the native valve.
- 14. 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 an 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 interconnecting said annulus section with said aorta section, the stent body further including at least one latch member connected to the stent body adjacent the annulus section and having an engagement portion disposed outward of the annulus section in the expanded configuration, 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 heart 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 an at least one native valve leaflet.
- 25. 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 cells cooperatively defining a generally tubular wall extending circumferentially around a proximal-to-distal axis, the wall having a scalloped distal edge including a plurality of circumferentially-spaced recess regions and a plurality 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.
- 27. A prosthetic heart valve for replacement of a native valve comprising an expandable stent body having a collapsed configuration and a fully expanded, unconstrained configuration, the stent body including a structure extending circumferentially around a proximal-to-distal axis, the structure having a region which, in the fully expanded configuration, has a non-circular cross-section in a plane perpendicular to the proximal-to-distal axis, and three prosthetic valve leaflets having free edges and being adapted to coapt with one another at the free edges, the free edges of the leaflets being connected to the structure within said region at commissure locations circumferentially spaced around the proximal-to-distal axis.
- 29. A stent for use with a prosthetic heart valve for replacement of a native valve, the stent comprising an expandable body having a fully expanded configuration including an annulus section having a plurality of cells cooperatively defining a generally tubular wall extending circumferentially around a proximal-to-distal axis, at least a part of the wall in the fully expanded configuration having a generally triangular cross-section in a plane perpendicular to the proximal-to-distal axis so that the wall includes three side regions and corner regions connecting mutually-adjacent side regions.
Specification