Mitral valve annuloplasty ring for molding left ventricle geometry
First Claim
1. An annuloplasty ring for implantation in a mitral valve annulus, said annuloplasty ring comprising:
- a generally oval-shaped ring body having an anterior portion, a posterior portion opposite the anterior portion, right and left sides between the anterior and posterior portions, and transition segments between the sides and the posterior portion;
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 longer dimension along a major axis than a shorter dimension along a minor axis; and
, wherein a mid-section of the posterior portion rises upward from the adjacent transition segments to an axial position higher than the highest axial position of the anterior portion.
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Accused Products
Abstract
An annuloplasty ring for correcting 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.
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Citations
26 Claims
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1. An annuloplasty ring for implantation in a mitral valve annulus, said annuloplasty ring comprising:
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a generally oval-shaped ring body having an anterior portion, a posterior portion opposite the anterior portion, right and left sides between the anterior and posterior portions, and transition segments between the sides and the posterior portion;
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 longer dimension along a major axis than a shorter dimension along a minor axis; and
,wherein a mid-section of the posterior portion rises upward from the adjacent transition segments to an axial position higher than the highest axial position of the anterior portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A mitral annuloplasty ring, comprising:
a 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, 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 body having a posterior bow that extends both radially inward and axially upward. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
Specification