DEGENERATIVE VALVULAR DISEASE SPECIFIC ANNULOPLASTY RINGS
First Claim
1. An annuloplasty ring selected from a set of annuloplasty rings for correcting a heart valve annulus, the set of annuloplasty rings comprising:
- a set of rings each having a ring body able to resist deformation when subjected to the stress imparted thereon by the 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; and
wherein the proportional shapes of the ring bodies change with increasing orifice sizes of the rings in the set.
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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.
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Citations
24 Claims
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1. An annuloplasty ring selected from a set of annuloplasty rings for correcting a heart valve annulus, the set of annuloplasty rings comprising:
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a set of rings each having a ring body able to resist deformation when subjected to the stress imparted thereon by the 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; and wherein the proportional shapes of the ring bodies change with increasing orifice sizes of the rings in the set. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A mitral annuloplasty ring selected from a set of mitral annuloplasty rings for correcting a mitral heart valve annulus, the set of mitral annuloplasty rings comprising:
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a set of rings each having a ring body able to resist deformation when subjected to the stress imparted thereon by the 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 the proportional shapes of the ring bodies change to comply with predicted shapes of degenerative valvular disease for different annulus orifice sizes. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A mitral annuloplasty ring selected from a set of mitral annuloplasty rings for correcting a mitral heart valve annulus, the set of mitral annuloplasty rings comprising:
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a set of rings each having a ring body able to resist deformation when subjected to the stress imparted thereon by the 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 the ratio B/A for each ring body changes with increasing ring orifice size. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification