Truncated leaflet for prosthetic heart valves
AssigneeEdwards Lifesciences Corporation
InventorsWilliam C. Bruchman, Cody L. Hartman
Life of this patent
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Abstract
Described embodiments are directed toward prosthetic valves having leaflets of a particular shape that improves bending character without requiring a long length valve. In accordance with an embodiment, a prosthetic valve comprises a leaflet frame, a plurality of leaflets that are coupled to the leaflet frame, where each leaflet has a free edge and a base. The base of each leaflet is truncated in which the leaflet in cross section shows a line in an alpha plane onto the leaflet frame.
Claims25
A prosthetic valve with three or more leaflets having an inflow end and an outflow end, the prosthetic valve comprising:
- a frame assembly having a central longitudinal axis and including a leaflet frame and a cover having a generally tubular shape, the cover being coupled to the leaflet frame such that the cover at least partially covers the leaflet frame, the leaflet frame defining a plurality of leaflet windows, the plurality of leaflet windows each defining an isosceles trapezoid and including a leaflet window side and a leaflet window base, the leaflet frame having a cylindrical shape;
- and
- a plurality of leaflets coupled to the frame assembly, each leaflet including a leaflet free edge configured to abut an adjacent leaflet free edge when the plurality of leaflets transition from an open position to a closed position to stop fluid flow through the prosthetic valve, a first leaflet side coupled to the frame assembly, a second leaflet side coupled to the frame assembly, and a leaflet base coupled to the frame assembly along the leaflet base, the leaflet base forming a line of attachment along the frame assembly, the leaflet base being positioned opposite the leaflet free edge and being flat in a plane transverse to the central longitudinal axis of the frame assembly, the leaflet frame including a flat portion with which the leaflet base forms the line of attachment.
A prosthetic valve with three or more leaflets having an inflow end, an outflow end, and a valve axis extending between the inflow end and the outflow end of the prosthetic valve and comprising:
- a leaflet frame assembly including a leaflet frame and a tubular cover, the leaflet frame assembly defining a plurality of leaflet attachment lines extending in a plane that is transverse to the valve axis, the leaflet attachment lines being defined on flat portions of the leaflet frame assembly, the leaflet frame including a flat portion with which the leaflet base forms the line of attachment, the leaflet frame defining a plurality of leaflet windows, the plurality of leaflet windows each defining an isosceles trapezoid and including a leaflet window side and a leaflet window base, the leaflet frame having a cylindrical shape;
- and
- a plurality of leaflets each having a first side, a second side opposite the first side, a leaflet free edge and a leaflet base opposite to the leaflet free edge that is flat and which is coupled to one of the plurality of leaflet attachment lines defined by the leaflet frame assembly along the leaflet base forming a line of attachment along the leaflet frame assembly at the flat portions of the leaflet frame assembly.
Dependencies are inferred from the claim text.