Fig. 2: Design and final prototype of the novel mitral annuloplasty ring. | Communications Medicine

Fig. 2: Design and final prototype of the novel mitral annuloplasty ring.

From: An axis-specific mitral annuloplasty ring eliminates mitral regurgitation allowing mitral annular motion in an ovine model

Fig. 2: Design and final prototype of the novel mitral annuloplasty ring.

a 3D-printed annuloplasty ring body in a semi-rigid material (FPU 50, Carbon, Redwood City, CA) demonstrating several important features including the kerfed posterior segments to allow lateral bending about the anteroposterior axis, the full thickness segments as well as the width of the posterior segment to provide additional structural support and prevent anteroposterior dilation, incomplete ring design to accommodate the aortic root and the aorto-mitral dynamics, and two small perforations at the trigones to allow the attachment of polyester suture (not shown) for the anterior segment. b Complete novel annuloplasty ring design with elastic silicone filling in the posterior segments and encasing the anterior polyester suture using a 3D-printed mold. c Final prototype of the novel mitral annuloplasty ring with polyester fabric wrapping the exterior in the flat and saddle geometry. Note a thin strip of sewing cuff at the outer perimeter of the annuloplasty ring for ease of implantation.

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