MITRAL ANNULOPLASTY RINGS WITH SEWING CUFF
First Claim
1. A mitral annuloplasty ring that facilitates implant for correcting a patient'"'"'s mitral valve annulus, comprising:
- an inner ring body formed of a metallic remodeling 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 a relatively straight anterior 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 or inflow side facing toward the left atrium when implanted and a lower or outflow side facing toward the left ventricle when implanted; and
an outer covering of suture-permeable material enclosing the inner ring body, the outer covering including a molded elastomeric tube within a fabric sheath, wherein the elastomeric tube completely surrounds the inner ring body in a main portion and bulges outwards from the main portion on an inflow edge thereof to form a sewing cuff, wherein the inflow side of the outer covering is convex while the outflow side has an inward step from the sewing cuff to the main portion, and wherein as seen in radial cross-section, the sewing cuff has a height h of about 50% of the total annuloplasty ring height H, while the width of the sewing cuff is about 30% of the total annuloplasty ring width W.
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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
26 Claims
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1. A mitral annuloplasty ring that facilitates implant for correcting a patient'"'"'s mitral valve annulus, comprising:
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an inner ring body formed of a metallic remodeling 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 a relatively straight anterior 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 or inflow side facing toward the left atrium when implanted and a lower or outflow side facing toward the left ventricle when implanted; and an outer covering of suture-permeable material enclosing the inner ring body, the outer covering including a molded elastomeric tube within a fabric sheath, wherein the elastomeric tube completely surrounds the inner ring body in a main portion and bulges outwards from the main portion on an inflow edge thereof to form a sewing cuff, wherein the inflow side of the outer covering is convex while the outflow side has an inward step from the sewing cuff to the main portion, and wherein as seen in radial cross-section, the sewing cuff has a height h of about 50% of the total annuloplasty ring height H, while the width of the sewing cuff is about 30% of the total annuloplasty ring width W. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A mitral annuloplasty ring for correcting a patient'"'"'s mitral valve annulus that minimizes platelet deposits, fibrous proliferation, and thrombus formation, comprising:
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an inner ring body formed of a metallic remodeling 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 a relatively straight anterior 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 or inflow side facing toward the left atrium when implanted and a lower or outflow side facing toward the left ventricle when implanted; and an outer covering of suture-permeable material enclosing the inner ring body, the outer covering including a molded elastomeric tube within a fabric sheath, wherein the elastomeric tube completely surrounds the inner ring body in a main portion and bulges outwards from the main portion on an inflow edge thereof to form a sewing cuff, wherein the inflow side of the outer covering is convexly curved, smooth and streamlined to minimize platelet deposits, fibrous proliferation, and thrombus formation, while the outflow side has an inward step from the sewing cuff to the main portion. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A mitral annuloplasty ring that facilitates implant for correcting a patient'"'"'s mitral valve annulus, comprising:
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an inner ring body formed of a plurality of concentric axially-oriented metallic bands 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 a relatively straight anterior 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 or inflow side facing toward the left atrium when implanted and a lower or outflow side facing toward the left ventricle when implanted; an outer covering of suture-permeable material enclosing the inner ring body, the outer covering including a molded elastomeric tube within a fabric sheath, wherein the elastomeric tube completely surrounds the inner ring body in a main portion and bulges outwards from the main portion on an inflow edge thereof to form a sewing cuff, wherein the inflow side of the outer covering is convex while the outflow side has an inward step from the sewing cuff to the main portion; and a circular colored suture line sewn into the fabric sheath under and delineating the radially inner extent of the sewing cuff and facilitate implant of the ring by demarking for the surgeon a boundary on the ring within which sutures should not be passed to avoid contact with the bands of the inner ring body. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification