Expandable annuloplasty ring and associated ring holder
First Claim
1. A prosthetic device for surgical repair of an aortic valve of a patient, the aortic valve being exposed to alternating diastolic and systolic phases of a cardiac cycle, the aortic valve having a valve axis and contained within a generally tubular aortic root, the aortic valve including a plurality of valve leaflets, the valve leaflets attached to a coronet-shaped valve annulus, the coronet-shaped valve annulus extending circumferentially around the valve axis, the coronet-shaped valve annulus extending in height along the valve axis between a nadir portion at a base of the aortic root and a spaced away commissure portion generally at a sinotubular junction of the aortic root, the aortic root also having a subvalvular region located below the nadir portion and a supravalvular region located above the commissure portion, the aortic root having coronary arteries attached thereto between the subvalvular and supravalvular regions, the prosthetic device comprising:
- a first elastic core member, said first elastic core member being annular in shape;
a second elastic core member, said second elastic core member being annular in shape; and
a flexible fabric sheath member, said fabric sheath member coupled to each of said first and second elastic core members, forming a closed perimeter, continuous annular assembly, and covering each of said first and second core members, said fabric sheath member maintaining said first and second core members in a spaced-apart spatial relationship relative to one another in a manner to create an annular portion of the fabric sheath member between said elastic core members for receiving suture during implantation to repair the aortic valve;
wherein, said prosthetic device is configured as a closed-perimeter flexible structure for placement externally around the aortic root, at the subvalvular region generally adjacent the nadir portion of the valve annulus, and whereby, in use, the closed-perimeter structure constrains the aortic root so as to improve coaptation of the valve leaflets during the diastolic phase of the cardiac cycle.
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Accused Products
Abstract
Devices and methods are provided for surgical repair of dilated aortic root to restore aortic valve competence while preserving native leaflets. In one aspect of the invention an expandable annuloplasty ring is provided for external placement at the base of a dilated aortic root. The expandable ring is capable of elastically expanding between a first diastolic diameter and a larger second systolic diameter to provide a physiologically representative surgical repair of the aortic root. In a further aspect of the invention, is provided a holder assembly for aortic annuloplasty ring and suitable for other cardiac valve prosthesis. The holder assembly consists of a holder body pivotingly coupled to a handle member through a ball-and-socket arrangement.
53 Citations
10 Claims
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1. A prosthetic device for surgical repair of an aortic valve of a patient, the aortic valve being exposed to alternating diastolic and systolic phases of a cardiac cycle, the aortic valve having a valve axis and contained within a generally tubular aortic root, the aortic valve including a plurality of valve leaflets, the valve leaflets attached to a coronet-shaped valve annulus, the coronet-shaped valve annulus extending circumferentially around the valve axis, the coronet-shaped valve annulus extending in height along the valve axis between a nadir portion at a base of the aortic root and a spaced away commissure portion generally at a sinotubular junction of the aortic root, the aortic root also having a subvalvular region located below the nadir portion and a supravalvular region located above the commissure portion, the aortic root having coronary arteries attached thereto between the subvalvular and supravalvular regions, the prosthetic device comprising:
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a first elastic core member, said first elastic core member being annular in shape; a second elastic core member, said second elastic core member being annular in shape; and a flexible fabric sheath member, said fabric sheath member coupled to each of said first and second elastic core members, forming a closed perimeter, continuous annular assembly, and covering each of said first and second core members, said fabric sheath member maintaining said first and second core members in a spaced-apart spatial relationship relative to one another in a manner to create an annular portion of the fabric sheath member between said elastic core members for receiving suture during implantation to repair the aortic valve; wherein, said prosthetic device is configured as a closed-perimeter flexible structure for placement externally around the aortic root, at the subvalvular region generally adjacent the nadir portion of the valve annulus, and whereby, in use, the closed-perimeter structure constrains the aortic root so as to improve coaptation of the valve leaflets during the diastolic phase of the cardiac cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification