Stent cell bridge for cuff attachment
First Claim
1. A prosthetic heart valve, comprising:
- a stent having a collapsed condition and an expanded condition and extending from an inflow end to an outflow end, the stent having a plurality of rows of cells extending around a circumference of the stent, each cell formed by a plurality of cell struts, selected cells including a bridging feature, each bridging feature including a first supplemental strut and a second supplemental strut, first ends of the first and second supplemental struts being coupled to cell struts of a respective selected cell, a second end of the first supplemental strut coupled to a second end of the second supplemental strut to form a free end of the bridging feature nested within the respective selected cell;
a valve assembly disposed within the stent; and
a cuff having an inflow end and an outflow end, selected edge portions of the outflow end of the cuff being coupled to the stent along the bridging features and to the free ends,wherein the selected cells each define a surface, and each bridging feature extends radially outward of a corresponding one of the surfaces in the absence of applied forces.
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Accused Products
Abstract
A prosthetic heart valve includes a collapsible stent extending from an inflow end to an outflow end, and a cuff having an inflow end an outflow end. The stent includes first and second circumferential rows of cells defined by first and second pluralities of struts, respectively. The second circumferential row is positioned closer to the outflow end of the stent than the first circumferential row. At least one cell in the second circumferential row includes by a first strut opposed to a fourth strut and a second strut opposed to a third strut. A bridging feature in at least one cell in the second circumferential row includes first and second supplemental struts extending across an intermediate portion of the cell. The outflow end of the cuff is coupled to the stent along the bridging feature.
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Citations
19 Claims
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1. A prosthetic heart valve, comprising:
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a stent having a collapsed condition and an expanded condition and extending from an inflow end to an outflow end, the stent having a plurality of rows of cells extending around a circumference of the stent, each cell formed by a plurality of cell struts, selected cells including a bridging feature, each bridging feature including a first supplemental strut and a second supplemental strut, first ends of the first and second supplemental struts being coupled to cell struts of a respective selected cell, a second end of the first supplemental strut coupled to a second end of the second supplemental strut to form a free end of the bridging feature nested within the respective selected cell; a valve assembly disposed within the stent; and a cuff having an inflow end and an outflow end, selected edge portions of the outflow end of the cuff being coupled to the stent along the bridging features and to the free ends, wherein the selected cells each define a surface, and each bridging feature extends radially outward of a corresponding one of the surfaces in the absence of applied forces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A prosthetic heart valve, comprising:
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a stent having a collapsed condition and an expanded condition and extending from an inflow end to an outflow end, the stent having a plurality of rows of cells extending around a circumference of the stent, each cell formed by a plurality of cell struts, selected cells including a “
V”
-shaped strut member coupled to cell struts of the selected cells, each “
V”
-shaped strut member defining a free end nested within a corresponding one of the selected cells;a valve assembly disposed within the stent; and a cuff having an inflow end and an outflow end, selected edge portions of the outflow end of the cuff being coupled to the stent along the “
V”
-shaped strut members and to the free ends, wherein the selected cells each define a surface, and, for each selected cell, portions of the “
V”
-shaped strut member extend radially outward of the surface in the absence of applied forces so that the selected edge portions of the outflow end of the cuff are positioned radially outward of the surfaces in the absence of applied forces.
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Specification