Single suture biological tissue aortic stentless valve
First Claim
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1. A method of repairing a human heart valve comprising the steps of:
- forming a stentless valve prosthesis made entirely of tissue and having a plurality of leaflets;
joining side edges of the leaflets along commissures extending in a flow direction;
forming the leaflets to encircle a flow opening to form a valve;
providing a tissue sewing rim formed at least in part by portions of the leaflets around an inlet of the valve, and including a tissue layer over the commissures formed where the leaflets join; and
suturing the valve to heart tissue of a patient with a single suture row along the sewing rim and tissue layer over the commissures.
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Abstract
A semilunar stentless valve is formed entirely of biological tissue, and has a plurality of leaflets that are joined to form an annulus and coapt to form a one-way valve. The leaflets open fully to minimize obstruction. A narrow rim of tissue is provided over commissures where the leaflets join and around a base of the valve for a serving ring. The valves can be sutured to heart tissue wall in a single suture row.
86 Citations
3 Claims
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1. A method of repairing a human heart valve comprising the steps of:
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forming a stentless valve prosthesis made entirely of tissue and having a plurality of leaflets;
joining side edges of the leaflets along commissures extending in a flow direction;
forming the leaflets to encircle a flow opening to form a valve;
providing a tissue sewing rim formed at least in part by portions of the leaflets around an inlet of the valve, and including a tissue layer over the commissures formed where the leaflets join; and
suturing the valve to heart tissue of a patient with a single suture row along the sewing rim and tissue layer over the commissures.
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2. The method of claim 13, wherein the stentless valve has a low profile in a flow direction and the tissue layers at the commissures have a narrow width forming posts, and suturing the valve positioned with the commissures and sewing rim spaced from heart coronary ostia to leave the coronary ostia substantially free of impingement.
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3. The method of claim 14 including forming the valve to have a larger outflow opening than an opening at the inlet of the valve.
Specification