Stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient
First Claim
1. A device configured for implantation at a heart valve, the device comprising:
- an expandable stent comprising;
a first stent segment extending along a first length portion of the stent, the first stent segment configured to be positioned and radially expanded against a vascular wall of a native aortic valve site, the first stent segment comprising a plurality of closed cell structures defining a circumference of the stent along the first length portion, the plurality of closed cell structures having a uniform density around the circumference; and
a second stent segment disposed along a second length portion of the stent, the second stent segment comprising a first plurality of interconnected strut members having a first strut density and a second plurality of interconnected strut members having a second strut density, the first and second plurality of interconnected strut members being disposed in alternating regions around a circumference of the stent, the first strut density being higher than the second strut density,wherein, in an implanted position of the stent at the heart valve, regions of the alternating regions having the first strut density are configured to be aligned with respective commissures of the heart valve and regions of the alternating regions having the second strut density are configured to be aligned with respective cusps of the heart valve.
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Accused Products
Abstract
A device configured for implantation at a heart valve comprises an expandable stent. The stent comprises a first stent segment extending along a first length portion of the stent. The first stent segment is configured to be positioned and radially expanded against a vascular wall of a native aortic valve site. The first stent segment comprises a plurality of closed cell structures defining a circumference of the stent along the first length portion. The plurality of closed cell structures has a uniform density around the circumference. The stent also comprises a second stent segment disposed along a second length portion of the stent. The second stent segment comprises a plurality of interconnected strut members disposed around a circumference of the stent in alternating regions having a first strut density and a second strut density. The first strut density is higher than the second strut density.
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Citations
16 Claims
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1. A device configured for implantation at a heart valve, the device comprising:
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an expandable stent comprising; a first stent segment extending along a first length portion of the stent, the first stent segment configured to be positioned and radially expanded against a vascular wall of a native aortic valve site, the first stent segment comprising a plurality of closed cell structures defining a circumference of the stent along the first length portion, the plurality of closed cell structures having a uniform density around the circumference; and a second stent segment disposed along a second length portion of the stent, the second stent segment comprising a first plurality of interconnected strut members having a first strut density and a second plurality of interconnected strut members having a second strut density, the first and second plurality of interconnected strut members being disposed in alternating regions around a circumference of the stent, the first strut density being higher than the second strut density, wherein, in an implanted position of the stent at the heart valve, regions of the alternating regions having the first strut density are configured to be aligned with respective commissures of the heart valve and regions of the alternating regions having the second strut density are configured to be aligned with respective cusps of the heart valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification