Mitral annuloplasty rings with sewing cuff
First Claim
1. A mitral annuloplasty ring for correcting a patient'"'"'s mitral valve annulus between the left atrium and left ventricle, comprising:
- an inner ring body formed of a material that will resist deformation when subjected to the stress imparted thereon by the mitral valve annulus, the inner ring body defining a periphery as seen in plan view with a convex posterior segment adapted to be attached to a posterior aspect of the mitral annulus opposite an anterior segment that is relatively straight compared to the posterior segment adapted to be attached to an anterior aspect of the mitral annulus, the inner ring body periphery being oriented about a central flow axis that defines an upper/inflow side facing toward the left atrium when implanted and a lower/outflow side facing toward the left ventricle when implanted; and
an outer covering of suture-permeable material surrounding the inner ring body, the outer covering including a solid molded elastomeric tube within a fabric sheath, wherein a main portion of the solid elastomeric tube completely surrounds the inner ring body and the solid elastomeric tube has a bulge that projects outwards from the main portion only on an inflow edge thereof to form a sewing cuff, wherein the inflow side of the outer covering is convexly curved to a radially outer extent of the sewing cuff, while the outflow side has a radially inward step from the sewing cuff to the main portion to form an inner corner.
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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, 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.
179 Citations
28 Claims
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1. A mitral annuloplasty ring for correcting a patient'"'"'s mitral valve annulus between the left atrium and left ventricle, comprising:
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an inner ring body formed of a material that will resist deformation when subjected to the stress imparted thereon by the mitral valve annulus, the inner ring body defining a periphery as seen in plan view with a convex posterior segment adapted to be attached to a posterior aspect of the mitral annulus opposite an anterior segment that is relatively straight compared to the posterior segment adapted to be attached to an anterior aspect of the mitral annulus, the inner ring body periphery being oriented about a central flow axis that defines an upper/inflow side facing toward the left atrium when implanted and a lower/outflow side facing toward the left ventricle when implanted; and an outer covering of suture-permeable material surrounding the inner ring body, the outer covering including a solid molded elastomeric tube within a fabric sheath, wherein a main portion of the solid elastomeric tube completely surrounds the inner ring body and the solid elastomeric tube has a bulge that projects outwards from the main portion only on an inflow edge thereof to form a sewing cuff, wherein the inflow side of the outer covering is convexly curved to a radially outer extent of the sewing cuff, while the outflow side has a radially inward step from the sewing cuff to the main portion to form an inner corner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A mitral annuloplasty ring that facilitates correction of a patient'"'"'s mitral valve annulus between the left atrium and left ventricle, comprising:
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an inner ring body formed of a material that will resist deformation when subjected to the stress imparted thereon by the mitral valve annulus, the inner ring body defining a periphery as seen in plan view with a convex posterior segment adapted to be attached to a posterior aspect of the mitral annulus opposite an anterior segment that is relatively straight compared to the posterior segment adapted to be attached to an anterior aspect of the mitral annulus, the inner ring body periphery being oriented about a central flow axis that defines an upper/inflow side facing toward the left atrium when implanted and a lower/outflow side facing toward the left ventricle when implanted; an outer covering of suture-permeable material surrounding the inner ring body, the outer covering including a molded elastomeric tube within a fabric sheath, wherein a main portion of the elastomeric tube completely surrounds the inner ring body and the elastomeric tube has a bulge that projects outwards from the main portion only on an inflow edge thereof to form a sewing cuff, wherein the inflow side of the outer covering is convex to a radially outer extent of the sewing cuff while the outflow side has a radially inward step from the sewing cuff to the main portion to form an inner corner, and wherein as seen in radial cross-section, the sewing cuff has a height h of about 50% of a total annuloplasty ring height H; and a suture line sewn into and around the fabric sheath delineating an underside of the sewing cuff at the inner corner at about a mid-point of the main portion that maintains tension in the fabric sheath. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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Specification