Stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient
First Claim
1. A stent for implantation at a native heart valve, the stent comprising:
- an expandable body having a first open end and second open end opposite the first open end, a longitudinal axis of the expandable body extending between the first open end and the second open end; and
a plurality of positioning arches positioned around an outer perimeter of the expandable body, each positioning arch terminating in an apex facing in a direction toward the first open end of the expandable body,wherein the stent has an implanted configuration when in an implanted position at the native heart valve, the implanted configuration comprising;
the expandable body being in an expanded configuration and oriented such that the first open end is upstream the second open end relative to a direction of blood flow through the native heart valve,the apex of each of the positioning arches being positioned within a respective one of a plurality of pockets of the native heart valve, the pockets being defined by the native leaflets and a heart structure from which the native leaflets extend, andthe first open end of the expandable body extending past each of the apexes of the positioning arches by a distance such that the first open end of the expandable body is positioned upstream of an annulus of the heart valve and out of contact with nerve bundles of the heart valve.
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Accused Products
Abstract
A stent for implantation at a native heart valve includes an expandable body having a first open end and second open end opposite the first open end. The sent includes a plurality of positioning arches positioned around an outer perimeter of the expandable body. Each positioning arch terminates in an apex facing toward the first open end of the expandable body. In an implanted position, the expandable body is oriented such that the first open end is upstream the second open end relative to a direction of blood flow through the native heart valve. In the implanted position, the apex of each of the positioning arches is configured to be positioned within a respective one of a plurality of pockets of the native heart valve and the first open end is positioned upstream of an annulus of the heart valve and out of contact with nerve bundles of the valve.
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Citations
24 Claims
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1. A stent for implantation at a native heart valve, the stent comprising:
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an expandable body having a first open end and second open end opposite the first open end, a longitudinal axis of the expandable body extending between the first open end and the second open end; and a plurality of positioning arches positioned around an outer perimeter of the expandable body, each positioning arch terminating in an apex facing in a direction toward the first open end of the expandable body, wherein the stent has an implanted configuration when in an implanted position at the native heart valve, the implanted configuration comprising; the expandable body being in an expanded configuration and oriented such that the first open end is upstream the second open end relative to a direction of blood flow through the native heart valve, the apex of each of the positioning arches being positioned within a respective one of a plurality of pockets of the native heart valve, the pockets being defined by the native leaflets and a heart structure from which the native leaflets extend, and the first open end of the expandable body extending past each of the apexes of the positioning arches by a distance such that the first open end of the expandable body is positioned upstream of an annulus of the heart valve and out of contact with nerve bundles of the heart valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A stent for implantation at a native heart valve, the stent comprising:
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an expandable body having a first open end and a second open end opposite the first open end, a longitudinal axis of the expandable body extending between the first open end and the second open end; and a plurality of positioning arches positioned around an outer perimeter of the expandable body, each positioning arch terminating in an apex facing in a direction toward the first open end of the expandable body, wherein, in an implanted position of the stent at the native heart valve, the stent has an implanted configuration comprising; the expandable body being in an expanded configuration and oriented such that the first open end is upstream the second open end relative to a direction of blood flow through the native heart valve, and the first open end of the expandable body extending past each of the apexes of the positioning arches by a distance such that the first open end of the expandable body is positioned upstream of an annulus of the native heart valve by a distance of less than about 10 mm. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification