JPS60902Y2 - Straw for storing tableted livestock semen - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a straw for storing tablet-shaped livestock semen.

In general, semen used for artificial insemination of livestock such as pigs and cows can be stored in two ways: one is stored in liquid form, and the other is frozen and solidified.

In the case of the latter method, the frozen and solidified tablets are placed in liquid nitrogen (-196°C), then cooled, and the required number of tablets of solidified semen are placed in a straw.
Store the straw in a storage tank containing liquid nitrogen.

At Tokoguchi, we have already applied for this type of preservation straw in 1973.
4-14310 has been proposed, but the storage straw in this invention has small holes through which liquid flows in the bottom of the straw body and the cap that closes the opening of the straw body. be.

Therefore, when the straw body containing tablet-shaped semen is pushed into liquid nitrogen to be immersed, the liquid nitrogen penetrates into the straw body at a rate that is small due to the small holes in the bottom and cap of the straw body. is slow and time consuming;
As a result, there is a problem in that it takes time and effort to immerse the straw body, to lift the straw body out of the liquid nitrogen, and to drain the liquid nitrogen inside the straw body.

Furthermore, since the cap that closes the opening of the straw body is of an external fitting type, the operation of attaching and detaching the cap is not smooth, and the usability is poor.

The present invention was developed to solve the above-mentioned problems, and its structure consists of a straw body with a bottom and a cap that closes the opening of the straw body. A cylindrical portion to be fitted into the straw body is hung from the lower surface of the lid portion having a larger outer diameter than the outer diameter of the straw, and a cut is made in the peripheral wall of the cylindrical portion to form an elastic engagement piece. The outer surface of the hooking piece is raised outward, and through holes are formed in the upper and lower parts of the peripheral wall of the straw body.

Hereinafter, one embodiment of the present invention will be described based on the drawings.
1 is a straw body with a bottom, which is molded from a transparent synthetic resin material that can withstand the low temperatures of liquid nitrogen (-196°C), and holes 2 and 3 through which liquid nitrogen flows are provided in the upper and lower parts of the peripheral wall. At the same time, an internally fitted cap 4 is removably attached to the opening at the upper end.

The position of the through hole 3 opened in the lower part of the peripheral wall of the straw body 1 is as close to the bottom as possible, and the upper and lower through holes 2,
Size 3 is such that the frozen and solidified semen tablet a does not jump out from the straw body 1, and the liquid nitrogen can flow in.
The size should be such that the outflow occurs smoothly.

The cap 4 is made of a synthetic resin material that can withstand the bottom temperature of liquid nitrogen, similar to the straw body 1, and includes a lid part 5 having a larger diameter than the outer diameter of the straw body 1, and a cylindrical part formed to hang down from the lower surface of the lid part 5. 6, a gate-shaped notch 7 is carved in the peripheral wall of the cylindrical portion 6, and elastic engaging pieces 8 are formed facing each other on the diameter line, and the outer surface of the elastic engaging piece 8 is directed outward. The elastic engaging piece 8 has a chevron-shaped protuberance 8' and acts elastically with the lower connecting portion as a fulcrum.

The amount of protrusion of the chevron-shaped protuberance 8' on the elastic hooking piece 8 is made larger than the inner diameter of the straw body 1, so that when the cap 4 is attached to the opening of the straw body 1, the cylindrical portion 6 is fitted into the straw, but the elastic hooking piece 8 is elastically bent due to contact with the inner surface of the straw body 1, and the protrusion 8' of the elastic hooking piece 8 is brought into close contact with the inner surface of the straw body 1. The adhered state is maintained.

Note that the number of elastic engaging pieces 8 formed on the cylindrical portion 6 of the cap 4 is not limited to the form in which two pieces are provided facing each other on the diameter line, but it is of course possible to form three or four pieces as desired.

In the figure, 9 is a storage tank containing liquid nitrogen.

Since the storage straw of the present invention is constructed as described above, when a tablet of frozen solidified semen is stored in the straw and pushed into a storage tank containing liquid nitrogen and immersed in it, the liquid nitrogen will be absorbed. Since it enters the straw smoothly, the immersion work can be carried out quickly, and when the straw is lifted from the storage tank, the liquid nitrogen flowing into the straw body flows out smoothly.

In addition, since the cap that closes the opening of the straw body is attached to the straw body by the elastic force of the elastic engagement piece,
The cap can be easily removed.

Therefore, the cap can be removed very easily even when the cap is removed by lifting it out of ultra-low temperature liquid nitrogen.

Therefore, it is possible to provide a storage straw that is highly usable.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, with Figure 1 being a front view and Figure 2 being a front view.
The figure is a vertical side view, Figure 3 is a perspective view of the cap, Figure 4 is a sectional view taken along line 4-4 in Figure 3, and Figure 5 is 5 in Figure 4.
FIG. 6 is a partially cutaway perspective view showing the left state of the storage straw stored in the storage tank. In the figure, 1 Nisdro one main body, 2, 3: through hole, 4: cap, 5: lid part, 6: cylinder part, 7: notch, 8: elastic engagement piece,
8': Protuberance.

Claims (1)

[Scope of utility model registration request] A straw body with a bottom and a cap that closes the opening of the straw body are removed, and the cap is fitted into the straw body on the lower surface of a lid portion that has a larger diameter than the outer diameter of the straw body. The cylindrical part is made into the same body, and the peripheral wall of the cylindrical part is notched to form an elastic engaging piece, and the outer surface of the engaging piece is raised outward, and the upper and lower parts of the peripheral wall of the straw body are 1 storage straw with a through hole 0