Mitral Annuloplasty Ring Having Upward Bows
First Claim
1. A mitral annuloplasty ring for implantation in a mitral valve annulus having an anterior aspect and a posterior aspect, the annuloplasty ring comprising:
- a continuous ring body having an anterior portion, a posterior portion opposite the anterior portion, right and left sides between the anterior and posterior portions with transition segments between the sides and the anterior and posterior portions;
wherein the ring body is oriented about a central axis having an upward direction and a downward direction, the downward direction corresponding to the direction of blood flow through the mitral valve annulus, the ring having in plan view perpendicular to the central axis a major axis and a minor axis;
wherein the anterior portion has an upward bow, and, wherein the posterior portion has an upward bow.
1 Assignment
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Accused Products
Abstract
Methods of implanting an annuloplasty ring to correct maladies of the mitral annulus that not only reshapes the annulus but also reconfigures the adjacent left ventricular muscle wall. The ring may be continuous and is made of a relatively rigid material, such as Stellite. The ring has a generally oval shape that is three-dimensional at least on the posterior side. A posterior portion of the ring rises or bows upward from adjacent sides to pull the posterior aspect of the native annulus farther up than its original, healthy shape. In doing so, the ring also pulls the ventricular wall upward which helps mitigate some of the effects of congestive heart failure. Further, one or both of the posterior and anterior portions of the ring may also bow inward. The methods include securing the annuloplasty ring with the anterior portion against the annulus anterior aspect and the posterior portion against the annulus posterior aspect so that the ring posterior portion elevates, and may also pull radially inward, the annulus posterior aspect and corrects the mitral regurgitation.
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Citations
25 Claims
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1. A mitral annuloplasty ring for implantation in a mitral valve annulus having an anterior aspect and a posterior aspect, the annuloplasty ring comprising:
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a continuous ring body having an anterior portion, a posterior portion opposite the anterior portion, right and left sides between the anterior and posterior portions with transition segments between the sides and the anterior and posterior portions;
wherein the ring body is oriented about a central axis having an upward direction and a downward direction, the downward direction corresponding to the direction of blood flow through the mitral valve annulus, the ring having in plan view perpendicular to the central axis a major axis and a minor axis;
wherein the anterior portion has an upward bow, and, wherein the posterior portion has an upward bow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 17)
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11. A mitral annuloplasty ring for implantation in a mitral valve annulus having an anterior aspect and a posterior aspect, comprising:
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a continuous ring body made of a material having a high modulus of elasticity that will substantially resist distortion when subjected to the stress imparted thereon when the ring is implanted in the mitral valve annulus of an operating human heart, the ring body being oriented about a central axis having an upward direction and a downward direction, the downward direction corresponding to the direction of blood flow through the mitral valve annulus, the ring having in plan view perpendicular to the central Z axis a major Y axis and a minor X axis, the ring body having an anterior portion, a posterior portion opposite the anterior portion, and right and left sides between the anterior and posterior portions, and wherein the ring has equal height upward axial bows on both the anterior and posterior portions. - View Dependent Claims (12, 13, 14, 15, 16)
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18. A mitral annuloplasty ring for implantation in a mitral valve annulus having an anterior aspect and a posterior aspect, said annuloplasty ring comprising:
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a continuous ring body having an anterior portion, a posterior portion opposite the anterior portion, right and left sides between the anterior and posterior portions with transition segments between the sides and the anterior and posterior portions, wherein the ring body is oriented about a central axis having an upward direction and a downward direction, the downward direction corresponding to the direction of blood flow through the mitral valve annulus, the ring having in plan view perpendicular to the central axis a major axis and a minor axis, wherein the ring body is substantially saddle-shaped with the anterior and posterior portions having upward bows, and the right and left sides also having upward bows, and wherein the anterior and posterior portions bow radially inward to radial positions along the minor axis that are closer to the central axis than imaginary anterior and posterior projections in plan view of the sides toward each other. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification