Anatomically approximate prosthetic mitral valve

Details Anatomically approximate prosthetic mitral valve Anatomically approximate prosthetic mitral valve

2010-09-23

2011-10-11

Isabella, David (Department: 3774)

Prosthesis (i.e., artificial body members), parts thereof, or ai

Heart valve

Annular member for supporting artificial heart valve

C623S002120, C623S002170, C623S002180, C623S002380

Reexamination Certificate

active

08034104

ABSTRACT:
An anatomically approximate prosthetic heart valve includes dissimilar flexible leaflets, dissimilar commissures and/or a non-circular flow orifice. The heart valve may be implanted in the mitral position and have one larger leaflet oriented along the anterior aspect so as to mimic the natural anterior leaflet. Two other smaller leaflets extend around the posterior aspect of the valve. A basic structure providing peripheral support for the leaflets includes two taller commissures on both sides of the larger leaflet, with a third, smaller commissure between the other two leaflets. The larger leaflet may be thicker and/or stronger than the other two leaflets. The base structure defines a flow orifice intended to simulate the shape of the mitral annulus during the systolic phase. For example, the flow orifice may be elliptical. A relatively wide sewing ring has a contoured inflow end and is attached to the base structure in such a way that the valve can be implanted in an intra-atrial position and the taller commissures do not extend too far into the left ventricle, therefore avoiding injury to the ventricle.

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