Prosthetic heart valve with dissimilar leaflets
First Claim
1. A prosthetic heart valve, comprising:
- a base structure having a central flow orifice oriented around a flow axis; and
three separate flexible bioprosthetic tissue leaflets mounted on the base structure and projecting into the flow orifice, wherein each flexible leaflet has a generally constant thickness across its area and the thickness of at least one of the three flexible leaflets is substantially greater than the other two leaflets.
2 Assignments
0 Petitions
Accused Products
Abstract
An anatomically approximate prosthetic heart valve includes dissimilar flexible leaflets, dissimilar commissures and/or a non-circular flow orifice. The heart valve may be implanted in the mitral position and have one larger leaflet oriented along the anterior aspect so as to mimic the natural anterior leaflet. Two other smaller leaflets extend around the posterior aspect of the valve. A basic structure providing peripheral support for the leaflets includes two taller commissures on both sides of the larger leaflet, with a third, smaller commissure between the other two leaflets. The larger leaflet may be thicker and/or stronger than the other two leaflets. The base structure defines a flow orifice intended to simulate the shape of the mitral annulus during the systolic phase.
30 Citations
22 Claims
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1. A prosthetic heart valve, comprising:
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a base structure having a central flow orifice oriented around a flow axis; and three separate flexible bioprosthetic tissue leaflets mounted on the base structure and projecting into the flow orifice, wherein each flexible leaflet has a generally constant thickness across its area and the thickness of at least one of the three flexible leaflets is substantially greater than the other two leaflets. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A prosthetic mitral heart valve for implant at the mitral annulus having an anterior aspect opposite a posterior aspect, comprising:
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a base structure having a non-circular central flow orifice oriented around a flow axis; and three separate flexible bioprosthetic tissue leaflets mounted on the base structure and projecting into the flow orifice, wherein at least one of the three flexible leaflets is substantially larger in occluding area than the other two, and the mitral heart valve is adapted for placement within the mitral annulus such that the larger leaflet is adjacent the anterior aspect and the two smaller leaflets are adjacent the posterior aspect, wherein each flexible leaflet has a generally constant thickness across its area and the thickness of the larger of the three flexible leaflets is substantially greater than the other two leaflets. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A prosthetic heart valve, comprising:
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a base structure having a central flow orifice oriented around a flow axis; and three separate flexible bioprosthetic tissue leaflets mounted on the base structure and projecting into the flow orifice, wherein at least one of the three flexible leaflets is substantially stronger than the other two leaflets as determined by its response to a force deflection test. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification