JPS6261661A - Apparatus for holding specimen container of centrifugal rotary body - Google Patents

Abstract

PURPOSE:To surely perform hermetical sealing, by providing a fine hole to the injection port protruded to the upper central part of a cylindrical specimen container to insert a sphere having diameter slightly larger than the diameter of said fine hole and holding the outer part of said sphere to a centrifugal rotary body by the use of a holder having a special shape. CONSTITUTION:The injection port 6 of a specimen container 3 forms a protruded fine hole and a sphere 5 having a diameter slightly larger than the fine hole is pushed in said fine hole after a specimen solution 4 was sealed to hermetically seal the container 3. When this container 3 is rotated at a high speed in a state mounted to the rotary body 1, the sphere 5 pushed in the injection port 6 is ready to come out to the outside by the pressure of the specimen solution 4 but, because the part of the injection port 6 of the container 3 is held by a holder 7 having a semispherical shape 9 fitted to the pushed-in outer shape of the sphere 5, simple and sure hermetical sealing is enabled.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a holding means for a sample container of a centrifugal rotating body that accommodates the sample container in a plurality of holes and rotates at high speed.

[Background of the invention]

Conventionally, one method of sealing a sample container was to permanently seal the injection port at the tip of the sample container by heat welding or the like. With this structure, heat is applied to the injection port to weld it when sealing, which requires a separate welding device, and it is inconvenient that the materials are limited to those that can be welded.

[Purpose of the invention]

An object of the present invention is to eliminate the drawbacks of the prior art described above and to improve the operability of this type of centrifugal rotating body.

[Summary of the invention]

The present invention was devised by focusing on the fact that the plastic sample container of the present invention can easily pass a sphere through a hole slightly smaller than the sphere, and that the structure can be sealed by the contact pressure of the sphere. be.

[Embodiments of the invention]

An embodiment of the invention is shown in FIG. Figure 2 The sample container 3
It shows the state before adding the sample of f! Figure lc3 shows a state in which the sample 4 was injected through the injection port 6, and the sphere 5 was pushed in and sealed. FIG. 4 shows an enlarged view of the holder 7 and injection port 6 shown in FIG.

As shown in Fig. 1, the centrifugal rotating body is made of a thin-walled ordinary plastic or the like, and has a plurality of holes in which a sample solution 4 to be separated by centrifugal force is placed. The sample container 3 comprises a sample container 3, a holder 7 for holding the pressure generated in the sample solution 4 by the centrifugal force of the sample container 3, and a lid 8 for holding the holder 7 on the rotating body 1. The present invention is a means for reliably sealing the sample solution 4 from leaking out from the injection port 6 due to the pressure of the sample solution 4 in the sample container 3. FIG. 2 shows the sample container 3 without a sample sealed therein, but the injection port 6 is the mouth of a protruding thin hole, and the present invention provides a sphere 5 whose diameter is slightly larger than that of the hole. After enclosing sample 4, push it into the third
It is to be held in the position shown in the figure. In this way, sphere 5
FIG. 1 shows the state in which the sample container 3 with the sample container 3 inserted therein is attached to the rotating body 1, and FIG. 4 shows an enlarged view of the injection port 6 and the holder 7. The sphere 5 pushed into the injection port 6 is subjected to a force trying to come out due to the pressure of the sample solution 4, but in order to hold it down and ensure sealing, the outside of the sphere 5 pushed in The holding body 7 has a hemispherical shape 9 that matches the shape of the holding body 7. This hemispherical shape 9 absorbs the force of the sphere 5 trying to move out, and the force of the sphere 5 strengthens the sealing of the sealing port 6.

〔Effect of the invention〕

According to the present invention, the sample container of the centrifugal rotating body can be sealed easily and reliably, so that reliability can be further improved.

[Brief explanation of the drawing]

3 is a vertical sectional view showing the state of the sample container before sample injection.
The figure is a longitudinal sectional view showing a state in which a sample is similarly injected and sealed by a sphere, and FIG. 4 is an enlarged view of the main part of FIG. 1. 1 is a rotating body, 2 is a rotating shaft, 3 is a sample container, 4 is a sample solution, 5 is a sphere, 6 is an injection port, 7 is a holder, 8 is a lid, 9 is a hemispherical part, and 1o is a backing.

Claims (1)

[Claims] A centrifugal rotating body that has multiple holes and rotates at high speed by inserting the sample container to be separated into the holes.The bottom is closed and the top has a cylindrical shape with a sample insertion opening that tapers and protrudes in the center. A sphere slightly larger than the diameter of the hole is held in the narrow hole of the injection port of the sample container, and a hemispherical shape that matches the bulge of the outside shape of the injection port with the sphere held approximately in the center is used. 1. A holding device for a sample container of a centrifugal rotating body, characterized in that the holding body has a hole and is held on the centrifugal rotating body.