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 in a longitudinal direction from an inflow end to an outflow end, the stent including;
a first circumferential row of cells defined by a first plurality of struts;
a second circumferential row of cells defined by a second plurality of struts, the second circumferential row being positioned closer to the outflow end of the stent than is the first circumferential row, each cell in the second circumferential row having a same shape, at least one cell in the second circumferential row including a first strut opposed to a fourth strut and a second strut opposed to a third strut, the first and fourth struts being connected to the second and third struts;
a bridging feature in at least one cell in the second circumferential row, the bridging feature including a first supplemental strut having a first end and a second end, and a second supplemental strut having a first end and a second end, the first end of the first supplemental strut being attached to at least one of the first and third struts, the second end of the first supplemental strut being attached to the first end of the second supplemental strut, and the second end of the second supplemental strut being attached to at least one of the second and fourth struts, the first end of the first supplemental strut and the second end of the second supplemental strut being positioned an equal distance from the inflow end of the stent in the longitudinal direction;
a valve assembly secured to the stent, anda cuff having an inflow edge and an outflow edge, first portions of the outflow edge of the cuff not coupled along the bridging feature being positioned closer to the outflow end of the stent compared to second portions of the outflow edge of the cuff being coupled to the stent along the first supplemental strut and the second supplemental strut of the bridging feature,wherein at least two adjacent cells in a first group of cells in the second circumferential row include the bridging feature and at least two adjacent cells in a second group of cells in the second circumferential row include the bridging feature, the first group of cells and the second group of cells being separated by at least one cell in the second circumferential row without the bridging feature.
1 Assignment
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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.
185 Citations
12 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 in a longitudinal direction from an inflow end to an outflow end, the stent including; a first circumferential row of cells defined by a first plurality of struts; a second circumferential row of cells defined by a second plurality of struts, the second circumferential row being positioned closer to the outflow end of the stent than is the first circumferential row, each cell in the second circumferential row having a same shape, at least one cell in the second circumferential row including a first strut opposed to a fourth strut and a second strut opposed to a third strut, the first and fourth struts being connected to the second and third struts; a bridging feature in at least one cell in the second circumferential row, the bridging feature including a first supplemental strut having a first end and a second end, and a second supplemental strut having a first end and a second end, the first end of the first supplemental strut being attached to at least one of the first and third struts, the second end of the first supplemental strut being attached to the first end of the second supplemental strut, and the second end of the second supplemental strut being attached to at least one of the second and fourth struts, the first end of the first supplemental strut and the second end of the second supplemental strut being positioned an equal distance from the inflow end of the stent in the longitudinal direction; a valve assembly secured to the stent, and a cuff having an inflow edge and an outflow edge, first portions of the outflow edge of the cuff not coupled along the bridging feature being positioned closer to the outflow end of the stent compared to second portions of the outflow edge of the cuff being coupled to the stent along the first supplemental strut and the second supplemental strut of the bridging feature, wherein at least two adjacent cells in a first group of cells in the second circumferential row include the bridging feature and at least two adjacent cells in a second group of cells in the second circumferential row include the bridging feature, the first group of cells and the second group of cells being separated by at least one cell in the second circumferential row without the bridging feature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A prosthetic heart valve, comprising:
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a stent having a collapsed condition and an expanded condition and extending in a longitudinal direction from an inflow end to an outflow end, the stent including; a first circumferential row of cells defined by a first plurality of struts; a second circumferential row of cells defined by a second plurality of struts, the second circumferential row being positioned closer to the outflow end of the stent than is the first circumferential row, at least one cell in the second circumferential row including a first strut opposed to a fourth strut and a second strut opposed to a third strut, the first and fourth struts being connected to the second and third struts; a bridging feature in at least one cell in the second circumferential row, the bridging feature including a first supplemental strut having a first end and a second end, and a second supplemental strut having a first end and a second end, the first end of the first supplemental strut being attached to at least one of the first and third struts, the second end of the first supplemental strut being attached to the first end of the second supplemental strut, and the second end of the second supplemental strut being attached to at least one of the second and fourth struts, the first end of the first supplemental strut and the second end of the second supplemental strut being positioned an equal distance from the inflow end of the stent in the longitudinal direction; a valve assembly secured to the stent, and a cuff having an inflow edge and an outflow edge, first portions of the outflow edge of the cuff not coupled along the bridging feature being positioned closer to the outflow end of the stent compared to second portions of the outflow edge of the cuff being coupled to the stent along the first supplemental strut and the second supplemental strut of the bridging feature, wherein the one cell defines a surface, and the first and second supplemental struts extend radially outwardly from the surface in the absence of applied forces when the stent is in the expanded condition.
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Specification