Enclosed type embryo freezing carrying rod as well as preparation method and use method thereof

Abstract

An enclosed type embryo freezing carrying rod comprises a carrying rod body, wherein an upper concave step and a lower concave step are arranged on the carrying rod body, a horizontally placed embryo slide is fixed on the lower concave step, a groove for holding embryos is arranged at the middle part of the embryo slide, and a cover plate connected to the carrying rod body and matching with the embryo slide is arranged on the upper concave step. The carrying rod body, the embryo slide and the cover plate form an enclosed type embryo carrier so as to avoid cross infection in a liquid nitrogen container; the carrying rod body is formed by injection molding, the embryo slide is formed by hot press molding, the production is convenient, and the fabrication cost is low; the embryo slide and the cover plate are both made of medical transparent PET thin sheet, and have good transparency and are easy for observation, and surface tension of the embryo slide after corona treatment is set to be 41-46 dynes, so as to avoid deformation of the embryo placed on the embryo slide; and after an embryo is placed on the embryo slide, the cover plate is hot sealed on the carrying rod body by pressing and hot sealing, the use is convenient.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a closed embryo freezing carrier and its preparation method and use method. Background technique [0002] As the number of infertile people increases, more and more people are receiving embryo transfers, but the current carrier for carrying embryos is relatively simple and rough, such as melting a glass rod and pulling it into a thin sheet, and placing the embryo on it; or Plastic tubes are used to carry the embryos, and the latest product is to put the embryos on the plastic sheet, and then cover the cap, or directly inject a thin curved plastic rod to place the embryos. [0003] The above-mentioned method of carrying embryos has the following defects: first, the original carrier is the latest plastic slide, the surface tension is not uniform, and the embryos will appear spherical or flattened during use, which is not conducive to observation , it is not conducive to ab...

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Problems solved by technology

[0003] The above-mentioned method of carrying embryos has the following defects: first, the original carrier is the latest plastic slide, the surface tension is not uniform, and the embryos will appear spherical or flattened during use, which is not conducive to observation , it is not conducive to absorbing the frozen liquid around the embryo. If it is frozen directly, the thawing time will be increased during thawing, which will affect the quality of the embryo. At a certain position, when observing, you need to find the position of the embryo. If the embryo is placed too close to the end, the sheath on the slide will have the risk of knocking down the embryo; third, several embryos will be placed in a large liquid nitrogen bucket , and liquid nitrogen is not a one-time use, there will be a risk of virus cross-infection

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