PROSTHETIC MITRAL VALVE
First Claim
Patent Images
1. An atrioventricular replacement valve, comprising:
- a valve body having an inlet portion comprising an annulus and an outlet portion having at least two commissural attachment locations, said annulus having a periphery, the edges of said periphery being scalloped, wherein said annulus has a saddle-shaped periphery formed by a pair of relatively high peripheral portions separated by a pair of relatively low peripheral portions.
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Abstract
An improved prosthetic mitral valve is provided having advantageous hemodynamic performance, nonthrombogenicity, and durability. The valve includes a valve body having an inflow annulus and an outflow annulus. Commissural attachment locations are disposed adjacent the outflow annulus. An anterior leaflet and a posterior leaflet of the valve are shaped differently from one another. The inflow annulus preferably is scalloped so as to have a saddle-shaped periphery having a pair of relatively high portions separated by a pair of relatively low portions. The anterior high portion preferably is vertically higher than the posterior high portion.
328 Citations
36 Claims
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1. An atrioventricular replacement valve, comprising:
a valve body having an inlet portion comprising an annulus and an outlet portion having at least two commissural attachment locations, said annulus having a periphery, the edges of said periphery being scalloped, wherein said annulus has a saddle-shaped periphery formed by a pair of relatively high peripheral portions separated by a pair of relatively low peripheral portions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An atrioventricular replacement valve, comprising:
a valve body having an inlet portion comprising an annulus and an outlet portion having at least two commissural attachment locations, said annulus having an annulus tilt angle in the range of about 5-20 degrees. - View Dependent Claims (18, 19, 20, 21, 23)
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22. A replacement mitral valve, comprising:
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a valve body having an inlet and an outlet, said body including an annulus at said inlet for attachment to a native tissue annulus, said body comprised of an anterior leaflet and a posterior leaflet which meet along first and second hinge lines extending substantially from the annulus at the inlet towards the outlet;
each of said hinge lines at the annulus being disposed more than 60° and
less than 90°
from the midpoint of the anterior leaflet at the annulus. - View Dependent Claims (24, 25)
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26. An atrioventricular replacement valve, comprising:
a valve body having a longitudinal axis, said body including an inlet and an outlet, said body comprised of two leaflets which meet along first and second hinge lines extending substantially between the inlet and outlet, said first and second hinge lines at said inlet passing through a first plane which extends in a direction parallel to said longitudinal axis, said first and second hinge lines at said outlet passing through a second plane which extends in a direction parallel to said longitudinal axis, said first and second planes intersecting at an angle. - View Dependent Claims (27, 28)
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29. A replacement atrioventricular valve comprising:
a tubular member having an inlet and an outlet, an anterior side of said member having a length between the inlet and outlet which is longer than that of a posterior side of said member.
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30. A method of manufacturing a replacement atrioventricular valve, comprising:
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providing a sheet of tissue; and
cutting an anterior leaflet and a posterior leaflet from said tissue, said cutting comprising cutting an inflow end of the anterior leaflet on a radius of curvature different than that of an inflow end of the posterior leaflet.
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31. A surgical method, comprising:
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providing a replacement atrioventricular valve having an inlet and an outlet, said valve comprising a tubular member having a longitudinal axis, a first direction along said axis extending from the inlet to the outlet, a second direction along said axis extending from the outlet to the inlet, said valve comprised of a saddle-shaped annulus having an anterior saddle portion which extends further in said second direction than a posterior saddle portion of said annulus, said posterior saddle portion extending further in the second direction than intermediate saddle portions between the anterior and posterior saddle portions;
attaching said annulus to a native tissue annulus with said anterior saddle portion abutting at least a portion of the fibrous trigon.
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32. A method, comprising:
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providing an atrioventricular valve having a saddle-shaped annulus;
testing said atrioventricular valve by placing said annulus in a seat having a shape complementary to the saddle-shaped annulus such that the annulus seals to the seat;
said testing further comprising delivering a pulsating flow of fluid through the valve.
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33. An atrioventricular replacement valve, comprising:
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a valve body having an inlet, an outlet, an anterior leaflet and a posterior leaflet, the leaflets connected to each other along hinge lines that extend from the inlet to the outlet;
a first direction being defined generally from the inlet to the outlet along a longitudinal axis of the valve body, and a second direction being defined along the longitudinal axis generally opposite the first direction;
wherein the leaflets are scalloped at the outlet so that a distance in the second direction between the midpoints of each of the leaflets at the outlet and the hinge lines at the outlet is less than 4 mm. - View Dependent Claims (34)
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35. A method of manufacturing a replacement heart valve, comprising:
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providing a first leaflet and a second leaflet, each leaflet comprising a distally-extending tab portion;
providing a connector member;
connecting the tab portion of the first leaflet to the connector member; and
connecting the tab portion of the second leaflet to the connector member. - View Dependent Claims (36)
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Specification