Method of fixing a physiologic mitral valve bioprosthesis

Details Method of fixing a physiologic mitral valve bioprosthesis Method of fixing a physiologic mitral valve bioprosthesis

A - Human Necessities

61

F

A61F 2/24 (2006.01)

Patent

CA 2248643

A whole heart is collected shortly after the death of the animal. The left ventricle and left atrium of the animal heart is sectioned and exposed thereby exposing the mitral valve, the chordae tendineae and the papillary heads. The mitral valve is fixed in situ by fixing portions of the left ventricle and left atrium containing the mitral valve. The mitral valve is excised from the animal heart remnant to include a portion of the endocardium containing the papillary heads and the annulus. In the preferred embodiment of the invention, the excised mitral valve is further fixed to complete fixation of the papillary heads. Then, the excess myocardial tissue is trimmed away and the mitral valve is stored in fixing solution to await further processing.

On recueille un coeur entier peu après le décès d'un animal. On sectionne et on dénude le ventricule gauche et l'oreillette gauche du coeur de l'animal, ce qui dégage la valvule mitrale, les cordages tendineux et les têtes des muscles papillaires. On fixe la valvule mitrale in situ en fixant les parties du ventricule gauche et de l'oreillette gauche contenant la valvule mitrale. On excise cette dernière des restes du coeur de l'animal en prenant une partie de l'endocarde contenant les têtes papillaires et l'anneau fibreux. Dans le mode de réalisation préféré, on fixe la valvule mitrale excisée de façon à bien fixer les têtes papillaires. Puis on enlève le tissu myocardique en excès et on conserve la valvule mitrale dans une solution de fixation en attendant un traitement ultérieur.

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