Stent features for collapsible prosthetic heart valves
First Claim
Patent Images
1. A prosthetic heart valve, comprising:
- a stent having a proximal end, a distal end, an expanded condition and a collapsed condition, the stent including;
a plurality of proximal cells at the proximal end;
a plurality of distal cells at the distal end, the distal cells being longitudinally spaced apart from the proximal cells;
a support strut array including a plurality of support struts, the array having a first end connected to a multiplicity of the proximal cells and a second end connected to a multiplicity of the distal cells, the multiplicity of the proximal cells being less than the multiplicity of the distal cells; and
at least one support post connected to the proximal cells; and
a valve structure connected to the at least one support post.
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Abstract
A prosthetic heart valve includes a stent having an expanded condition and a collapsed condition. The stent includes a plurality of distal cells, a plurality of proximal cells, a plurality of support struts coupling the proximal cells to the distal cells, and at least one support post connected to a plurality of proximal cells. The proximal cells are longitudinally spaced apart from the distal cells. Various strut configurations and connections of the struts to the proximal cells and of the proximal cells to the support post improve stent flexibility and reduce stress in the valve leaflets.
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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 proximal end, a distal end, an expanded condition and a collapsed condition, the stent including; a plurality of proximal cells at the proximal end; a plurality of distal cells at the distal end, the distal cells being longitudinally spaced apart from the proximal cells; a support strut array including a plurality of support struts, the array having a first end connected to a multiplicity of the proximal cells and a second end connected to a multiplicity of the distal cells, the multiplicity of the proximal cells being less than the multiplicity of the distal cells; and at least one support post connected to the proximal cells; and a valve structure connected to the at least one support post. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A prosthetic heart valve, comprising:
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a stent having a proximal end, a distal end, an expanded condition and a collapsed condition, the stent including; a plurality of proximal cells at the proximal end; a plurality of distal cells at the distal end, the distal cells being longitudinally spaced apart from the proximal cells; a plurality of support struts, each support strut having a first end, a first end portion adjacent the first end, a second end, a second end portion adjacent the second end, and an intermediate portion between the first end portion and the second end portion, the first end of each support strut being connected to one of the distal cells and the second end of each support strut being connected to one of the proximal cells, the intermediate portions in a group of the plurality of support struts extending in a longitudinal direction in the collapsed condition of the stent and the second end portions in the group of the support struts extending at an oblique angle to the longitudinal direction in the collapsed condition of the stent; and at least one support post connected to the proximal cells; and a valve structure connected to the at least one support post. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. The prosthetic heart valve, comprising:
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a stent extending in a longitudinal direction from a proximal end to a distal end and having an expanded condition and a collapsed condition, the stent including; a plurality of proximal cells at the proximal end; a plurality of distal cells at the distal end, the distal cells being longitudinally spaced apart from the proximal cells; a plurality of support struts, each support strut having a first end connected to one of the distal cells at a first connection point and a second end connected to one of the proximal cells at a second connection point, the second connection point being laterally offset from the first connection point relative to the longitudinal direction; and at least one support post connected to the proximal cells; and a valve structure connected to the at least one support post. - View Dependent Claims (16, 17, 18, 19)
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Specification