METHOD OF MEASUREMENT OF AORTIC VALVE ON ANATOMIC HEART PREPARATION Russian patent published in 2019 - IPC G09B23/28 

FIELD: satisfaction of human vital requirements.

SUBSTANCE: invention relates to human anatomy, can be applied in pathological anatomy and comparative anatomy of humans and animals. Heart preparation with the ascending part of the aorta is removed from a corpse, then washed with running water, and the left ventricle is opened. Then, 10 % gelatin is injected into the ascending part of the aorta until it completely fills the aortic valve sinuses, which is visually monitored from the side of the opened left ventricle. Then, a clamp is applied to the site of gelatin injection, and the aortic valve sinuses are irrigated from the left ventricle from the syringe with a concentrated formalin solution to coagulate gelatin and prevent it from flowing out of the aorta into the left ventricle. After that, the heart preparation is placed for 24–72 hours in a 10 % formalin solution. Next, the preparation is soaked in cold water for several hours. Then, the ascending part of the aorta is excised above the level of the aortic valve, mechanically removing all the gelatin except for the one that filled the aortic valve sinuses. On the aortic valve, the sinuses of which are filled with gelatin, with the help of a thin cotton thread and caliper the necessary measurements are performed in the plane perpendicular to the longitudinal axis of the aortic valve. After that, the aortic valve is cut with scissors between the left and right sinuses, the vertical dimensions of the valve elements are opened and measured.

EFFECT: method allows to increase the accuracy of measurement results by preventing the displacement of semilunar dampers during the measurement, as well as to expand the possibilities of practical application of the results due to the fact that measurements are performed on the aortic valve, the degree of filling of which corresponds to that in the phase of early ventricular diastole.

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