Heart valve
AssigneeCardiAQ Valve Technologies, Inc.
InventorsArshad Quadri, J. Brent Ratz
Life of this patent
Estimating the term…
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.
Claims23
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.
A replacement heart valve, comprising:
- 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.
Dependencies are inferred from the claim text.