Valve prosthesis
First Claim
1. A heart valve prosthesis having a plurality of leaflets encircling a flow opening and of size to coapt to form a valve, each leaflet having a free outflow edge at the outflow end of the leaflet, wherein the free outflow edge forms a convex (relative to the leaflet) curve in the plane of the leaflet.
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Abstract
A heart valve prosthesis having a plurality of leaflets encircling a flow opening and of size to coapt to form a valve, each leaflet having a free outflow edge at the outflow end of the leaflet, wherein the free outflow edge forms a convex (relative to the leaflet) curve in the plane of the leaflet, and methods for forming such a valve. A stentless heart valve prosthesis suitable for replacement of the aortic root comprising an outer wall and a plurality of leaflets positioned inside the outer wall, encircling a flow opening and of size to coapt to form a valve, wherein the outer wall and leaflets are formed from material other than natural valve material, and methods of forming such a valve prosthesis.
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Citations
51 Claims
- 1. A heart valve prosthesis having a plurality of leaflets encircling a flow opening and of size to coapt to form a valve, each leaflet having a free outflow edge at the outflow end of the leaflet, wherein the free outflow edge forms a convex (relative to the leaflet) curve in the plane of the leaflet.
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2. A method for forming a heart valve prosthesis comprising the step of forming a plurality of leaflets joined to encircle a flow passage and of a size to coapt to form a valve, wherein each leaflet has a free outflow edge at the outflow end of the leaflet, wherein the free outflow edge forms a convex (relative to the leaflet) curve in the plane of the leaflet.
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3. A method for forming a heart valve prosthesis comprising the steps of:
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assembling the valve, by steps comprising forming a plurality of leaflets joined to encircle a flow passage and of a size to coapt to form a valve, and forming an outer sheet joined to the leaflets around an inflow end and along commissures formed where adjacent leaflets join; after assembly of at least the leaflets and outer sheet of the valve, shaping the leaflets and/or outer sheet to a desired shape; and fixing the leaflets and/or outer sheet of the valve in the desired shape. - View Dependent Claims (4)
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5. A method for forming a stentless heart valve prosthesis comprising the steps of:
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forming a plurality of leaflets joined to encircle a flow passage and of a size to coapt to form a valve; and forming an outer sheet joined to the leaflets around an inflow end and along commissures formed where adjacent leaflets join; wherein the join between the outer sheet and the leaflets around the inflow end is at the periphery of the leaflets, and the outer sheet extends by a distance between 0.3 and 4 mm beyond the join with the leaflets at the inflow end, on the inflow side of the join, or the join between the outer sheet and the leaflets around the inflow end is at the periphery of the outer sheet, and the leaflets extend by a distance between 0.3 and 4 mm beyond the join with the outer sheet at the inflow end, on the inflow side of the join. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12)
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- 13. A stentless heart valve prosthesis comprising a plurality of leaflets joined to encircle a flow passage and of a size to coapt to form a valve, an outer sheet joined to the leaflets around an inflow end and along commissures formed where adjacent leaflets join, wherein the join between the outer sheet and the leaflets around the inflow end is at the periphery of the leaflets, and the outer sheet extends by a distance between 0.3 and 4 mm beyond the join with the leaflets at the inflow end, on the inflow side of the join, or the join between the outer sheet and the leaflets around the inflow end is at the periphery of the outer sheet, and the leaflets extend by a distance between 0.3 and 4 mm beyond the join with the outer sheet at the inflow end, on the inflow side of the join.
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25. (canceled)
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26. (canceled)
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29. A stentless heart valve prosthesis suitable for replacement of the aortic root comprising an outer wall and a plurality of leaflets positioned inside the outer wall, encircling a flow opening and of size to coapt to form a valve, wherein the outer wall and leaflets are formed from material other than natural valve material.
- 30. A method for forming a stentless heart valve prosthesis suitable for replacement of the aortic root comprising the steps of forming an outer wall and a plurality of leaflets positioned inside the outer wall, encircling a flow opening and of size to coapt to form a valve, wherein the outer wall and leaflets are formed from material other than natural valve material.
- 31. A stentless heart valve prosthesis suitable for replacement of the aortic root comprising a plurality of leaflets joined to encircle a flow passage and of a size to coapt to form a valve, an outer wall joined to the leaflets around an inflow end and along commissures formed where adjacent leaflets join, wherein the outer wall and leaflets are formed from material other than natural valve material, wherein the join between the outer wall and the leaflets around the inflow end is at the periphery of the leaflets, and the outer wall extends by a distance between 0.3 and 4 mm beyond the join with the leaflets at the inflow end, on the inflow side of the join, or the join between the outer sheet and the leaflets around the inflow end is at the periphery of the outer sheet, and the leaflets extend by a distance between 0.3 and 4 mm beyond the join with the outer wall at the inflow end, on the inflow side of the join.
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48. (canceled)
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49. (canceled)
Specification