Valve Prosthesis and Method for Delivery
First Claim
1. A valve prosthesis for implantation into a native cardiac valve site of an individual, the valve prosthesis comprising:
- a valve body; and
a frame supporting the valve body, the frame comprising;
an inlet portion configured to engage the floor of the outflow tract of the native heart atrium and restrict movement of the valve prosthesis in a downstream direction of blood flow at the valve site;
wherein the inlet portion is substantially s-shaped.
1 Assignment
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Accused Products
Abstract
In some embodiments, a valve prosthesis includes an inlet portion that is substantially s-shaped and configured to engage the floor of the outflow tract of the native heart atrium. In some embodiments, a valve prosthesis includes a chordae guiding element configured to reduce bending of the chordae to reduce stress on the chordae during the cardiac cycle. In some embodiments, a valve prosthesis includes a central portion having an hourglass shape configured to pinch a native annulus in order to provide axial fixation of the valve prosthesis within a valve site. In some embodiments, a valve prosthesis includes a frame having an outflow end that is flared to provide a gap between an outflow end of the frame and an outflow end of prosthetic leaflets when the prosthetic leaflets are fully opened.
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Citations
29 Claims
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1. A valve prosthesis for implantation into a native cardiac valve site of an individual, the valve prosthesis comprising:
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a valve body; and a frame supporting the valve body, the frame comprising; an inlet portion configured to engage the floor of the outflow tract of the native heart atrium and restrict movement of the valve prosthesis in a downstream direction of blood flow at the valve site; wherein the inlet portion is substantially s-shaped. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A valve prosthesis for implantation into a native cardiac valve site of an individual, the valve prosthesis comprising:
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a valve body; and a frame supporting the valve body, the frame comprising; a central portion configured to fit securely within an annulus of the valve site; a support arm extending from the central portion and configured to extend over and secure a native valve leaflet; and a chordae guiding element extending from the support arm and configured to engage chordae of the valve site, wherein the chordae guiding element is configured to angle the chordae so that the chordae are stretched to restrict movement of the valve prosthesis in an upstream direction of blood flow at the valve site, and wherein the chordae guiding element is configured to reduce bending of the chordae to reduce stress on the chordae during the cardiac cycle. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 29)
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20. A valve prosthesis for implantation into a native cardiac valve site of an individual, the valve prosthesis comprising:
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a valve body; and a frame supporting the valve body, the frame comprising; a central portion configured to fit securely within an annulus of the native valve site, wherein the central portion has an hourglass shape configured to pinch the annulus in order to provide axial fixation of the valve prosthesis within the valve site. - View Dependent Claims (21, 22, 23)
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24. A valve prosthesis for implantation into a native cardiac valve site of an individual, the valve prosthesis comprising:
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a valve body including prosthetic leaflets; and a frame secured to the valve body, the frame comprising; an inlet portion configured to engage the floor of an outflow tract of the native heart atrium and restrict movement of the frame in a downstream direction of blood flow at the valve site; a central portion connected to the inlet portion and configured to fit securely within the native valve annulus, wherein portions of the outflow end of the frame are flared to provide a gap between an outflow end of the frame and an outflow end of the prosthetic leaflets when the prosthetic leaflets are fully opened. - View Dependent Claims (25, 26, 27, 28)
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Specification