Truncated leaflet for prosthetic heart valves
First Claim
Patent Images
1. A prosthetic valve having an inflow end, an outflow end, and a valve axis extending between the in flow end and the outflow end of the prosthetic valve and comprising:
- a leaflet frame defining a plurality of leaflet windows, the leaflet frame including a base element defining a leaflet window base of each of the plurality of leaflet windows, the base element extending transverse to the valve axis; and
a plurality of leaflets that are coupled to the base element of the leaflet frame, 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 leaflet frame, a second leaflet side coupled to the leaflet frame, and a leaflet base opposite the leaflet free edge, the leaflet base being truncated in a plane that is transverse to the valve axis such that the leaflet base is flat, the leaflet base being coupled along the base element of the leaflet frame to define an attachment line that is straight, perpendicular relative to the longitudinal axis of the prosthetic valve, and which extends in the plane that is transverse to the valve axis.
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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.
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Citations
40 Claims
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1. A prosthetic valve having an inflow end, an outflow end, and a valve axis extending between the in flow end and the outflow end of the prosthetic valve and comprising:
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a leaflet frame defining a plurality of leaflet windows, the leaflet frame including a base element defining a leaflet window base of each of the plurality of leaflet windows, the base element extending transverse to the valve axis; and a plurality of leaflets that are coupled to the base element of the leaflet frame, 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 leaflet frame, a second leaflet side coupled to the leaflet frame, and a leaflet base opposite the leaflet free edge, the leaflet base being truncated in a plane that is transverse to the valve axis such that the leaflet base is flat, the leaflet base being coupled along the base element of the leaflet frame to define an attachment line that is straight, perpendicular relative to the longitudinal axis of the prosthetic valve, and which extends in the plane that is transverse to the valve axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A prosthetic valve 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:
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a leaflet frame including a leaflet window base element extending in a plane that is transverse to the valve axis and defining a base of one or more leaflet windows; and a plurality of leaflets that are coupled to the leaflet window base element of the leaflet frame, 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 leaflet frame, a second leaflet side coupled to the leaflet frame, and a leaflet base opposite the leaflet free edge, the leaflet base being truncated in a plane that is transverse to the valve axis such that the leaflet base is flat, the prosthetic valve defining a radius in the plane that is transverse to the valve axis and the leaflet base defining a width between the first leaflet side and the second leaflet side, the entire width of the leaflet base being coupled to the leaflet window base element of the leaflet frame such that the leaflet base is continuously attached to the base element of the leaflet frame.
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Specification