Heart valve
First Claim
Patent Images
1. A replacement heart valve, comprising:
- a valve body comprising an outer layer and an inner layer;
the outer layer being tubular and having a longitudinal axis, an upstream end and a downstream end, the outer layer formed from a thin, flexible material;
the inner layer being generally tubular, having a longitudinal axis generally collinear with the outer layer, and being positioned within the tubular outer layer, the inner layer formed from a thin, flexible material and defining a plurality of leaflets adapted to move between an open state and a coapted state, each leaflet having a side edge and a downstream portion, adjacent leaflets of the inner layer being connected by a commissural portion;
wherein the leaflets are attached to the outer layer along the leaflet side edges, and the commissural portions are attached to the outer layer downstream of at least a portion of the leaflet side edges; and
an elongate frame that can be radially compacted to a compacted state and radially expanded to an expanded state, the frame made up of a plurality of struts and having a longitudinal axis, the valve body being attached to the frame struts by a plurality of stitches;
wherein at least one of the plurality of stitches is a loose stitch configured to freely slide over the corresponding strut when the frame is radially compacted or expanded.
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Abstract
A replacement heart valve can comprise a valve body and an elongate frame. The valve body can define a plurality of leaflets adapted to move between an open state and a coapted state. The elongate frame can be configured to move between a radially compacted state and a radially expanded state, the frame comprising a plurality of struts. Stitches attach the valve body to the plurality of struts. At least one of the stitches can be a loose stitch configured to freely slide over the corresponding strut when the frame is moved between the radially compacted and radially expanded states.
521 Citations
23 Claims
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1. A replacement heart valve, comprising:
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a valve body comprising an outer layer and an inner layer; the outer layer being tubular and having a longitudinal axis, an upstream end and a downstream end, the outer layer formed from a thin, flexible material; the inner layer being generally tubular, having a longitudinal axis generally collinear with the outer layer, and being positioned within the tubular outer layer, the inner layer formed from a thin, flexible material and defining a plurality of leaflets adapted to move between an open state and a coapted state, each leaflet having a side edge and a downstream portion, adjacent leaflets of the inner layer being connected by a commissural portion; wherein the leaflets are attached to the outer layer along the leaflet side edges, and the commissural portions are attached to the outer layer downstream of at least a portion of the leaflet side edges; and an elongate frame that can be radially compacted to a compacted state and radially expanded to an expanded state, the frame made up of a plurality of struts and having a longitudinal axis, the valve body being attached to the frame struts by a plurality of stitches; wherein at least one of the plurality of stitches is a loose stitch configured to freely slide over the corresponding strut when the frame is radially compacted or expanded. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A replacement heart valve, comprising:
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a valve body defining a plurality of leaflets adapted to move between an open state and a coapted state; an elongate frame configured to move between a radially compacted state and a radially expanded state, the frame comprising a plurality of struts and having a longitudinal axis; and a plurality of stitches which attach the valve body to the plurality of struts, wherein at least one of the plurality of stitches is a loose stitch configured to freely slide over the corresponding strut when the frame is moved between the radially compacted and radially expanded states. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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Specification