Degenerative valvular disease specific annuloplasty rings
First Claim
1. A mitral annuloplasty ring, comprising:
- a ring body defining a periphery with an anterior segment opposite a posterior segment, and two side segments, the ring body in plan view defining a major axis A and a minor axis B extending across from the anterior segment to the posterior segment, the dimensional pairs B and A being selected from the groups consisting of;
A is about 38 mm and B is about 27.2 mm; and
A is about 40 mm and B is about 28.7 mm,wherein the ring defines a horizontal line segment a1-a2 having a length A along the major axis of the ring, andwherein the periphery is defined in plan view by four circular arcs, one for each segment, connected at points of tangency, and wherein two of the four circular arcs consist of portions of two congruent circles c2, c3 that include points a1 and a2, respectively, and both have a center along line segment a1-a2 and include a point b1 at the center of line segment a1-a2.
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0 Petitions
Accused Products
Abstract
Annuloplasty rings optimally sized to take into account more of the common degenerative valve pathologies. Each ring has a structural ring body with a shape that complies with predicted shapes of degenerative valvular diseases, such as fibroelastic deficiency (FED), Marfan'"'"'s or Barlow'"'"'s. The predicted shapes are obtained through careful echocardiographic and intraoperative measurements, and often differ for different annulus orifice sizes. For instance, in mitral rings the larger rings have larger minor axis and oblique axis dimensions relative to their major axis dimensions, and are more circular as opposed to D-shaped. The rings may also be three-dimensional and the relative heights around the rings may change for different sized rings. A mitral ring may have a higher anterior saddle relative to a posterior saddle, with the relative heights varying across the ring sizes. The ring may have varying flexibility around the ring periphery which also changes for different ring sizes. A bulge on the sewing cuff forms a step on the outflow side for ease of suturing, which may be indicated by a suture line.
243 Citations
8 Claims
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1. A mitral annuloplasty ring, comprising:
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a ring body defining a periphery with an anterior segment opposite a posterior segment, and two side segments, the ring body in plan view defining a major axis A and a minor axis B extending across from the anterior segment to the posterior segment, the dimensional pairs B and A being selected from the groups consisting of; A is about 38 mm and B is about 27.2 mm; and A is about 40 mm and B is about 28.7 mm, wherein the ring defines a horizontal line segment a1-a2 having a length A along the major axis of the ring, and wherein the periphery is defined in plan view by four circular arcs, one for each segment, connected at points of tangency, and wherein two of the four circular arcs consist of portions of two congruent circles c2, c3 that include points a1 and a2, respectively, and both have a center along line segment a1-a2 and include a point b1 at the center of line segment a1-a2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification