Transvalvular intraannular band for valve repair
Mitral valve prolapse and mitral regurgitation can be treating by implanting in the mitral annulus a transvalvular intraannular band having an elongate and arcuate body. The elongate and arcuate body has a first end, a first anchoring portion located proximate the first end, a second end, a second anchoring portion located proximate the second end, and a central portion. The central portion is displaced from the plane containing the first end and the second end. The transvalvular band is positioned so that it extends transversely across a coaptive edge formed by the closure of the mitral valve leaflets and the central portion is displaced towards the left ventricle relative to the first anchoring portion and the second anchoring portion. The ventricular direction displacement moves coaption to an earlier point in the cardiac cycle.
1. A transvalvular intraannular band, the transvalvular band comprising:
an elongate body having a first end, a first anchoring portion located proximate the first end, a second end, a second anchoring portion located proximate the second end, and a central portion connected to the first end and the second end, wherein the central portion has a convex arcuate shape, the central portion displaced transversely from the intraannular plane which includes the mitral valve annulus and is transverse to the direction of blood flow when the band is attached to the annulus, the central portion extending generally along a second plane which is perpendicular to the intraannular plane, the second plane including the first end and the second end;
wherein the first end and the second end are configured to be attached to the mitral valve annulus within the intraannular plane and the central portion is configured to be convex in the direction of the ventricle to support the mitral valve leaflets at a point displaced toward the ventricle from the intraannular plane,
wherein the first end and the second end reside on a generally septal-lateral axis transverse to the coaptive edges of the mitral valve leaflets when the band is attached to the mitral valve annulus, and
wherein the band does not comprise an annuloplasty ring.
2. The transvalvular band of claim 1 , wherein the central portion is narrower than both the first anchoring portion and the second anchoring portion.
3. The transvalvular band of claim 1 , wherein the central portion comprises an offset support portion and a first arm portion and a second arm portion, the offset support portion wider than the first arm portion and second arm portion.
4. The transvalvular band of claim 1 , wherein the central portion has a substantially triangular cross-section.
5. The transvalvular band of claim 1 , wherein the first anchoring portion extends in a lateral direction.
6. The transvalvular band of claim 5 , wherein the second anchoring portion extends in a lateral direction.
7. The transvalvular band of claim 5 , wherein the first anchoring portion has a generally arcuate shape.
8. The transvalvular band of claim 7 , wherein the second anchoring portion has a generally arcuate shape.
9. A transvalvular intraannular band, the transvalvular band comprising:
an elongate body having a first end, a first anchoring portion located proximate the first end, a second end, a second anchoring portion located proximate the second end, and a central portion connected to the first end and the second end, wherein the central portion has an arcuate shape, the central portion displaced transversely from the intraannular plane which includes the mitral valve annulus and is transverse to the direction of blood flow when the band is attached to the annulus, the central portion extending generally along a second plane which is perpendicular to the intraannular plane, the second plane including the first and second end;
wherein the first end and the second end are configured to be attached to the mitral valve annulus within the intraannular plane and the central portion is configured to extend transversely generally across coaptive edges formed by the mitral valve leaflets to support the leaflets at a point displaced toward the ventricle from the intraannular plane and elevate the position of the coaptive edges in the direction of the ventricle during valve closure,
wherein the first end and the second end reside on a generally septal-lateral axis transverse to the coaptive edges of the mitral valve leaflets when the band is attached to the mitral valve annulus, and
wherein the band does not comprise an annuloplasty ring.