Prosthetic heart valve and method
First Claim
1. A prosthetic aortic heart valve, comprising:
- an annular support frame, the support frame comprising a nickel-titanium, shape memory alloy, the support frame radially crimpable to a narrow configuration and radially expandable, the support frame having an inlet end and an outlet end; and
a valve assembly comprising three pericardium leaflets defining three commissures and forming a tubular conduit having an inlet and an outlet, the conduit disposed within the annular support frame, the conduit tapering radially inward away from the support frame from the inlet towards the outlet such that there is a radial clearance distance between each leaflet and the outlet end of the support frame when the leaflets are in an open state and when the leaflets are in a closed state,wherein the commissures are sutured to the support frame, and each leaflet comprises a curved inlet edge and a straight outlet edge.
2 Assignments
0 Petitions
Accused Products
Abstract
A prosthetic heart valve comprises a radially crimpable and radially expandable, net-like, annular support frame and a valve assembly disposed therein, the valve assembly comprising a conduit tapering from an inlet towards an outlet thereof. Some embodiments or the support frame comprise a proximal portion and a distal portion, a diameter of the proximal portion smaller than a diameter of the distal portion. The proximal portion is dimensioned for deployment in an annulus of a native aortic valve and a distal portion for deployment in an ascending aorta. Some embodiments of the conduit comprise a support construction with a three-cusp, crown-shaped cut line, the support construction sutured to the support frame around a bottom portion thereof and around the cut line. A method for using the prosthetic heart valve to replace a defective native aortic valve uses a minimally invasive procedure.
304 Citations
22 Claims
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1. A prosthetic aortic heart valve, comprising:
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an annular support frame, the support frame comprising a nickel-titanium, shape memory alloy, the support frame radially crimpable to a narrow configuration and radially expandable, the support frame having an inlet end and an outlet end; and a valve assembly comprising three pericardium leaflets defining three commissures and forming a tubular conduit having an inlet and an outlet, the conduit disposed within the annular support frame, the conduit tapering radially inward away from the support frame from the inlet towards the outlet such that there is a radial clearance distance between each leaflet and the outlet end of the support frame when the leaflets are in an open state and when the leaflets are in a closed state, wherein the commissures are sutured to the support frame, and each leaflet comprises a curved inlet edge and a straight outlet edge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A prosthetic heart valve, comprising:
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an annular support frame, the support frame comprising a nickel-titanium, shape memory alloy, the support frame radially crimpable to a narrow configuration and radially expandable, the support frame having an inlet end and an outlet end; and a valve assembly comprising three pericardium leaflets supported in the support frame in the form of a tubular conduit having an inlet and an outlet, the conduit tapering from the inlet towards the outlet such that the conduit comprises a radial clearance distance between three pericardium leaflets and the support frame at the outlet end when the leaflets are in an open state and when the leaflets are in a closed state. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A prosthetic heart valve, comprising:
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an annular support frame, the support frame comprising a nickel-titanium, shape memory alloy, the support frame radially crimpable to a narrow configuration and radially expandable, the support frame having an inlet end and an outlet end; and a valve assembly comprising three pericardium leaflets disposed within the annular support frame, the leaflets defining three commissures and forming a tubular conduit having an inlet and an outlet, the conduit tapering from the inlet towards the outlet such that there is a clearance distance between each leaflet and the outlet end of the support frame when the leaflets are in an open state and when the leaflets are in a sealed state. - View Dependent Claims (21, 22)
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Specification