| 摘要 |
A mitral valve is removed from a pig heart with the annulus, leaflets, cordae tendineae and papillary heads intact. The porcine mitral valve is fixed. A covering material is attached to the papillary heads around the cordae tendineae. A sewing tube of a flexible material is attached to each of the papillary heads by sutures that extend through the covering material. The sewing tube extends away from the porcine mitral valve's papillary head renmants. A covering material is attached to the annulus. A human heart with a diseased or damaged human mitral valve is imaged in vivo to size the length between the mitral valve annulus and the papillary heads. The porcine mitral valve annulus to sewing tube length is adjusted to match the like dimension in the human heart by trimming the sewing tube. The human heart is opened and the mitral valve excised. The human heart's cordae tendineae are removed leaving the papillary heads intact. The porcine mitral valve is placed in the left ventricle and the sewing tubes are sutured to a respective papillary head. The mitral valve is sutured in place in the annulus and the human heart is closed.
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