Aortic bioprosthesis and systems for delivery thereof
First Claim
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1. A replacement valve for use within a human body, the replacement valve comprising:
- a valve component; and
a stent component configured to house at least a portion of the valve component, wherein the stent component is configured to shift between a collapsed configuration and an expanded configuration, the stent component comprising;
a central, longitudinal stent axis;
an inflow end and an outflow end;
a lower anchoring crown comprising an at least partly conical body, wherein the lower anchoring crown defines the inflow end of the stent component;
an upper anchoring crown in communication with the lower anchoring crown and comprising an at least partly conical body,wherein;
the at least partly conical body of the lower anchoring crown slopes outwardly in a direction of the inflow end,the at least partly conical body of the upper anchoring crown slopes outwardly in a direction of the outflow end and thereafter extends to a free end of the upper anchoring crown;
andan outflow stent section in communication with the upper anchoring crown and comprising;
at least a partly conical body; and
a plurality of stabilization arches configured to bear against an ascending aorta and align the stent-component with respect to the ascending aorta,wherein;
each stabilization arch comprises a first base portion having a first thickness, a divergent portion that diverges away from the stent axis in a direction towards the outflow end in the expanded configuration, an arch apex inclined at an angle α
5 measured from the divergent portion in a direction towards the stent axis in the expanded configuration and having a second thickness, and a second base portion having a third thickness,wherein the first thickness and the third thickness are equal and the second thickness is greater than the first thickness and is greater than the third thickness, andwherein each first base portion of one stabilization arch is joined to the second base portion of an adjacent stabilization arch.
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Accused Products
Abstract
Embodiments of the present disclosure are directed to stents, valved-stents, and associated methods and systems for their delivery via minimally-invasive surgery.
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Citations
25 Claims
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1. A replacement valve for use within a human body, the replacement valve comprising:
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a valve component; and a stent component configured to house at least a portion of the valve component, wherein the stent component is configured to shift between a collapsed configuration and an expanded configuration, the stent component comprising; a central, longitudinal stent axis; an inflow end and an outflow end; a lower anchoring crown comprising an at least partly conical body, wherein the lower anchoring crown defines the inflow end of the stent component; an upper anchoring crown in communication with the lower anchoring crown and comprising an at least partly conical body, wherein; the at least partly conical body of the lower anchoring crown slopes outwardly in a direction of the inflow end, the at least partly conical body of the upper anchoring crown slopes outwardly in a direction of the outflow end and thereafter extends to a free end of the upper anchoring crown; and an outflow stent section in communication with the upper anchoring crown and comprising; at least a partly conical body; and a plurality of stabilization arches configured to bear against an ascending aorta and align the stent-component with respect to the ascending aorta, wherein; each stabilization arch comprises a first base portion having a first thickness, a divergent portion that diverges away from the stent axis in a direction towards the outflow end in the expanded configuration, an arch apex inclined at an angle α
5 measured from the divergent portion in a direction towards the stent axis in the expanded configuration and having a second thickness, and a second base portion having a third thickness,wherein the first thickness and the third thickness are equal and the second thickness is greater than the first thickness and is greater than the third thickness, and wherein each first base portion of one stabilization arch is joined to the second base portion of an adjacent stabilization arch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for replacing a valve within a human body, the system comprising:
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a delivery device comprising; an inner member comprising a guide wire lumen and a stent holder, and an outer member comprising a sheath; and a replacement valve for use within a human body, the replacement valve comprising; a valve component, and a stent component configured to house at least a portion of the valve, wherein the stent component is configured to shift between a collapsed configuration and an expanded configuration, the stent component comprising; a central, longitudinal stent axis; an inflow end and an outflow end; a lower anchoring crown defining an at least partly conical body, wherein the lower anchoring crown defines the inflow end of the stent component; an upper anchoring crown in communication with the lower anchoring crown and defining an at least partly conical body, wherein; the at least partly conical body of the lower anchoring crown slopes outwardly in a direction of the inflow end, and the at least partly conical body of the upper anchoring crown slopes outwardly in a direction of the outflow end; and an outflow stent section defining an at least partly conical body and comprising a commissural post section and a stabilization arch section, wherein; the commissural post section is in communication with the upper anchoring crown; the stabilization arch section comprises a plurality of stabilization arches in communication with the commissural post section and defines an at least partly conical body, each stabilization arch comprises a divergent portion that diverges away from the stent axis in a direction towards the outflow end in the expanded configuration and an arch apex inclined at an angle α
5 measured from the divergent portion in a direction towards the stent axis in the expanded configuration, andeach stabilization arch includes a first base portion having a first thickness adjacent a first commissural post section and a second base portion having a second thickness adjacent to an adjacent second commissural post section, wherein the arch apex of the stabilization arch has a third thickness which is greater than the first thickness and is greater than the second thickness, and at least one attachment element for removable attachment to the delivery device, wherein; the at least one attachment element is located at the inflow end of the stent component, the inflow end is defined as an end toward a left ventricle when delivered from a transapical approach, the at least one attachment element comprising an opening configured to enlarge when the stent component expands, and the stent holder comprises at least one groove for receiving the at least one attachment element of the stent component. - View Dependent Claims (12, 13, 14)
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15. A replacement valve for use within a human body, the replacement valve comprising:
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a valve component; and a stent component configured to house at least a portion of the valve component, wherein the stent component is configured to shift between a collapsed configuration and an expanded configuration, the stent component comprising; a central, longitudinal stent axis; an inflow end and an outflow end; an outflow stent section defining the outflow end and comprising a stabilization arch section and a commissural post section communicating with the stabilization arch section, wherein; the commissural post section defines supports for the valve component, and the stabilization arch section comprises a plurality of stabilization arches and has an outer profile defined by a divergent portion that diverges away from the stent axis in a direction towards the outflow end in the expanded configuration and an arch apex inclined at an angle of divergence measured from the divergent portion in a direction towards the stent axis in the expanded configuration, and each stabilization arch includes a first base portion having a first thickness adjacent a first commissural post section, the arch apex having a second thickness, and a second base portion having a third thickness adjacent a second commissural post section, wherein the first thickness and the third thickness are equal and the second thickness is greater than the first thickness and is greater than the third thickness; an anchoring section defining the inflow end; and a first crown section communicating with the outflow stent section and with the anchoring section, wherein the first crown section comprises a first divergent portion that diverges outwardly in a direction towards the outflow end, the first crown section having a free end. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification