Four-leaflet stented mitral heart valve
First Claim
1. A prosthetic heart valve for implant at a valve annulus, comprising:
- a support frame defining a non-circular orifice about an axis along an inflow-outflow direction; and
four separate flexible leaflets each separately mounted for movement on the support frame to provide a one-way valve in the elliptical orifice.
1 Assignment
0 Petitions
Accused Products
Abstract
A prosthetic mitral heart valve having four separate flexible leaflets. The heart valve includes a support frame that may be non-circular, for example elliptical or “D-shaped”. The support frame may have an undulating outflow edge defined by four inflow cusps and four outflow commissures to which each of the flexible leaflets attaches. The support frame may comprise an undulating wireform and a surrounding stent defining a structure having four cantilevered posts projecting in the outflow direction to support the four leaflets. The heart valve is designed to be secured in the annulus and function as a standalone unit without papillary muscle connections to the leaflets. The four leaflets may be arranged in two opposed pairs, one pair being smaller than the other pair. The larger pair of leaflets may be identical, or differently sized. Existing sizes of heart valve leaflets may be utilized with the smaller leaflets being at least two leaflet sizes smaller than the larger leaflets in odd millimeter increments.
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Citations
20 Claims
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1. A prosthetic heart valve for implant at a valve annulus, comprising:
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a support frame defining a non-circular orifice about an axis along an inflow-outflow direction; and
four separate flexible leaflets each separately mounted for movement on the support frame to provide a one-way valve in the elliptical orifice. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A prosthetic heart valve for implant at a valve annulus, comprising:
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a support frame defining an orifice about an axis along an inflow-outflow direction, the support frame having an undulating outflow edge including four alternating inflow cusps and flexible outflow commissures that extend generally axially in the outflow direction in a cantilevered fashion; and
four separate flexible leaflets each separately mounted for movement along the outflow edge of the support frame to provide a one-way valve in the orifice, each leaflet including a cusp edge mounted to an inflow cusp of the support frame and two commissure edges mounted to adjacent outflow commissures of the support frame. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A prosthetic heart valve for implant at a valve annulus, comprising:
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a support frame defining an orifice about an axis along an inflow-outflow direction; and
four separate flexible leaflets each separately mounted for movement on the support frame to provide a one-way valve in the orifice, wherein at least one of the leaflets is substantially smaller than at least one of the other leaflets. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification