TOOL AND METHOD FOR VITRIFYING OVUM OR EMBRYO

摘要

PROBLEM TO BE SOLVED: To provide a method and tool for simply vitrifying an ovum or embryo of a mammal at an ultrahigh speed to stably achieve a high survival rate. SOLUTION: The tool for vitrifying an ovum or an embryo includes a cylindrical extremely fine pipe part 1 and the connection part continued to the extremely fine pipe part to be mounted on a suction and discharge instrument. Since the shortest distance between two points opposed to each other at the cavity part having a vertical cross section with respect in the longitudinal direction of the extremely fine pipe part is shorter than the twice of the minimum outer diameter of the ovum or embryo and longer than the maximum diameter thereof, it prevented that two or more OVUM or embryos enter the extremely fine pipe part to be arranged on the surface vertical to the extremely fine pipe part in the longitudinal direction.