Aortic annuloplasty ring

• US 20060015179A1
• Filed: 07/19/2005
• Published: 01/19/2006
• Est. Priority Date: 07/19/2004
• Status: Active Grant

• Current Assignee: Coroneo, Inc.
• Original Assignee: Coroneo, Inc.
• Inventors: Paolitto, Anthony, Valentini, Valerio, Cartier, Raymond, Bulman-Fleming, Neil
• Granted Patent: US 8,034,102 B2
• Time in Patent Office: Days
• US Class Current: 623/2.360
• CPC Class Codes: A61F 2/06 Blood vessels
• CPC Class Codes: A61F 2/2442 Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
• CPC Class Codes: A61F 2/2445 Annuloplasty rings in direct contact with the valve annulus

Abstract

An annuloplasty ring to resize a dilated aortic root during valve sparing surgery includes a scalloped space frame having three trough sections connected to define three crest sections. The annuloplasty ring is mounted outside the aortic root, and extends in height between a base plane and a spaced apart commissure plane of the aortic root. At least two adjacent trough sections are coupled by an annulus-restraining member or tether that limits the maximum deflection of the base of the annuloplasty ring. In use, the tether is preferably located in proximity to the base plane of the aortic root. The annuloplasty ring is movable between a first, substantially conical configuration occurring during a diastolic phase of the cardiac cycle, and a second, substantially cylindrical configuration occurring during a systolic phase of the cardiac cycle. The attachment of the annuloplasty ring in proximity to the cardiac valve annulus allows the ring to regulate the dimensions of a dynamic aortic root during the different phases of the cardiac cycle.

Claims

1. A prosthetic annuloplasty ring for implantation around the aortic root of a patient, said aortic root defining a scalloped valve annulus, said valve annulus serving as attachment for three semilunar valve cusps within said aortic root, said aortic root spanning in height between a base plane located in general proximity to a left ventricular outflow tract and a sinotubular plane located in general proximity to a sinotubular junction between said aortic root and an ascending aorta, said valve cusps collectively defining three commissures from the junction of each of two adjacent cusps in proximity to said valve annulus, said commissures defining collectively a commissure plane, said commissure plane being located between said base and sinotubular planes, said prosthetic ring comprising:

A space frame, said space frame being scalloped and having three trough sections and three crest sections, said trough sections in general register with said valve annulus at said base plane, said crest sections in general register with said valve annulus in said commissure plane;

An annulus-restraining member, said annulus-restraining member coupling at least two adjacent trough sections,

Said space frame movable between a first ring configuration and a second ring configuration, said first ring configuration being substantially conical and said second ring configuration being substantially cylindrical;

Whereby when said ring is in said second ring configuration said ring restrains maximum dimension of aortic root through action of said annulus-restraining member, and when said ring is in said first ring configuration said annulus-restraining member allows radial movement of said trough sections generally within said base plane, thereby allowing said ring to regulate the dimension of said aortic root.