DEGENERATIVE VALVULAR DISEASE SPECIFIC ANNULOPLASTY RING SETS
First Claim
1. A set of annuloplasty rings for correcting a heart valve annulus from which one can be selected for implant, the set of 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 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 valve annulus when the annuloplasty ring is implanted, each ring having an identified orifice size in 2 mm increments; and
wherein proportional shapes of the ring bodies for orifice sizes up to 32 mm remains relatively constant but changes for orifice sizes above 32 mm.
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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.
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23 Claims
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1. A set of annuloplasty rings for correcting a heart valve annulus from which one can be selected for implant, the set of 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 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 valve annulus when the annuloplasty ring is implanted, each ring having an identified orifice size in 2 mm increments; and wherein proportional shapes of the ring bodies for orifice sizes up to 32 mm remains relatively constant but changes for orifice sizes above 32 mm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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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 a major axis A and a minor axis B extending across from an anterior segment to a posterior segment, and each ring having an identified orifice size; and wherein proportional shapes of the ring bodies change to comply with predicted shapes of degenerative valvular disease for different annulus orifice sizes and wherein, each ring further includes a suture-permeable covering over the ring body, and the covering has a smooth relatively flat inflow side and a stepped outflow side. - View Dependent Claims (14, 15, 16, 17, 18)
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19. 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 a major axis A and a minor axis B extending across from an anterior segment to a posterior segment, and each ring having an identified orifice size; wherein a ratio B/A for each ring body changes with increasing ring orifice size; and
,wherein the ring bodies are three-dimensional with the center of the anterior segment curving upward to a height C and the center of the posterior segment curving upward to a height D above a common datum plane, and wherein the ratio C/D for each ring body changes with increasing ring orifice size. - View Dependent Claims (20, 21, 22, 23)
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Specification