Degenerative vavlular disease specific annuloplasty ring sets
First Claim
1. A set of mitral annuloplasty rings for correcting a mitral heart valve annulus from which one can be selected for implant, the set of mitral annuloplasty rings comprising:
- a set of rings, each ring having a ring body able to resist deformation when subjected to a stress imparted thereon by a mitral valve annulus and arranged around a flow axis having an upward direction and a downward direction, the downward direction corresponding to the direction of blood flow through the mitral valve annulus when the annuloplasty ring is implanted, each ring body in plan view defining, as measured to the inner edge of the ring body, a major axis A extending across the widest point on the ring body and a minor axis B extending across from an anterior segment to a posterior segment perpendicular to the major axis A, and each ring having an identified orifice size; and
wherein proportional shapes of the ring bodies are different for different identified orifice sizes to comply with predicted shapes of a particular degenerative valvular disease for different annulus orifice sizes, wherein the ring bodies are three-dimensional with opposite sides of each ring body curving upward above a datum plane to a respective height, and wherein the different proportional shapes of the ring bodies comprises differences in the ratio of the heights of the opposite sides, and wherein,each ring further includes a suture-permeable covering over the ring body.
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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. 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.
199 Citations
27 Claims
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1. A set of mitral annuloplasty rings for correcting a mitral heart valve annulus from which one can be selected for implant, the set of mitral annuloplasty rings comprising:
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a set of rings, each ring having a ring body able to resist deformation when subjected to a stress imparted thereon by a mitral valve annulus and arranged around a flow axis having an upward direction and a downward direction, the downward direction corresponding to the direction of blood flow through the mitral valve annulus when the annuloplasty ring is implanted, each ring body in plan view defining, as measured to the inner edge of the ring body, a major axis A extending across the widest point on the ring body and a minor axis B extending across from an anterior segment to a posterior segment perpendicular to the major axis A, and each ring having an identified orifice size; and wherein proportional shapes of the ring bodies are different for different identified orifice sizes to comply with predicted shapes of a particular degenerative valvular disease for different annulus orifice sizes, wherein the ring bodies are three-dimensional with opposite sides of each ring body curving upward above a datum plane to a respective height, and wherein the different proportional shapes of the ring bodies comprises differences in the ratio of the heights of the opposite sides, and wherein, each ring further includes a suture-permeable covering over the ring body. - View Dependent Claims (2, 3, 4, 7, 8, 9, 10, 11, 12)
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- 5. The set of mitral annuloplasty rings of 1, wherein the predicted shapes of the particular degenerative valvular disease have been calculated from echocardiographic and intraoperative measurements.
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13. A set of mitral annuloplasty rings for correcting a mitral heart valve annulus from which one can be selected for implant, the set of mitral annuloplasty rings comprising:
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a set of rings, each ring having a ring body able to resist deformation when subjected to a stress imparted thereon by a mitral valve annulus and arranged around a flow axis having an upward direction and a downward direction, the downward direction corresponding to the direction of blood flow through the mitral valve annulus when the annuloplasty ring is implanted, each ring body in plan view defining, as measured to the inner edge of the ring body, a major axis A extending across the widest point on the ring body and a minor axis B extending across from an anterior segment to a posterior segment perpendicular to the major axis A, and each ring having an identified orifice size; and wherein proportional shapes of the ring bodies are different for different identified orifice sizes to comply with predicted shapes of a particular degenerative valvular disease for different annulus orifice sizes, wherein each ring body has varying flexibility around its periphery, and wherein the relative flexibility between the anterior segment and the posterior segment for the respective ring bodies is different with increasing ring orifice size, and wherein, each ring further includes a suture-permeable covering over the ring body. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A set of mitral annuloplasty rings for correcting a mitral heart valve annulus from which one can be selected for implant, the set of mitral annuloplasty rings comprising:
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a set of rings, each ring having a ring body able to resist deformation when subjected to a stress imparted thereon by a mitral valve annulus and arranged around a flow axis having an upward direction and a downward direction, the downward direction corresponding to a direction of blood flow through the mitral valve annulus when the annuloplasty ring is implanted, each ring body in plan view defining, as measured to the inner edge of the ring body, a major axis A extending across the widest point on the ring body and a minor axis B extending across from an anterior segment to a posterior segment perpendicular to the major axis A, and each ring having an identified orifice size; wherein a ratio B/A for each ring body changes with increasing ring orifice size; wherein the ring bodies are three-dimensional with a center of the anterior segment curving upward to a height C and a center of the posterior segment curving upward to a height D above a common datum plane, and wherein a ratio C/D for each ring body is different with increasing ring orifice size; and each ring further includes a suture-permeable covering over the ring body. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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Specification