JPS6236498Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a test liquid container suitable for use in pregnancy diagnosis, biochemical tests, etc.

For example, in the above pregnancy diagnosis or biochemical tests, if there are contaminants in the test liquid, it may give erroneous judgment results, so the test liquid is usually filtered and then reacted with a reagent. In order to perform this filtration, conventionally a filtration device is fitted onto the tip of a suction tool such as a pipette for collecting the sample liquid, but this filtration device has a fiber-based overfill material inside the filtration device. The fibers are aligned vertically and packed together.

However, with this method, it is difficult to pack the overfill material to a uniform hardness, and the hardness of overfill material packed in a large number of overfill containers will vary.
If it is tightly packed, the flow resistance of the test liquid will be large and it will not be possible to draw up enough test liquid into the pipette, and if it is loosely packed, it will not be possible to completely remove the contaminants. The drawback was that I couldn't do it. In addition, a portion of the overfill material may protrude from the tip of the overloader body, and there is a risk that the overfill material may be contaminated.

The present invention has been proposed in view of these points, and is designed to prevent the overfill material packed into the overloader that fits into the tip of the suction tool from dispersing between multiple overloaders. The fibrous material is sandwiched between a rod-shaped material receiver integrally formed from the inner circumferential surface of the container body and a porous material presser plate fitted onto the inner surface of the container body. .

Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 is an exploded perspective view of a pipette and a tube used for pregnancy diagnosis, for example. In the figure,
The pipette 1 consists of a tubular body 2 made of synthetic resin such as polyethylene, polypropylene, vinyl chloride, polycarbonate, polystyrene, etc., and a suction operating section 3. The insertion portion 5 is inserted and tightly fitted, and the tip portion 6 of the tubular body 2 is formed into a tapered shape. In this pipette 1, the tubular body 2 portion and the suction operation portion 3 are made of the same type of synthetic resin, and the tubular body 2 portion is formed with a relatively thick wall to increase its pressure resistance against external pressure in the circumferential direction. ,
The portion of the suction operation section 3 excluding the insertion section 5 is formed relatively thin so that it can easily deform in response to external pressure.

A filter 7 is tightly fitted into the tip end 6 of the pipette 1. Preferably, as shown in FIG. 2, the filter body 8 is formed integrally from the inner circumferential surface 9 of the filter body 8 at a slightly inward portion of the lower end of the filter body 8 formed by a tapered tube. The rod-shaped material receivers 10 protruding from the wall are positioned in a cross shape, and the material is porous and formed by solidifying an inorganic fibrous or non-woven material such as sintered polymer, glass filter, or glass with a certain strength. Disc-shaped material holding plate 1 made of relatively strong material
1 is press-fitted onto the inner circumferential surface 9 of the filter main body 8, and a fiber-based overmaterial 12 such as carboxylic acid type cation exchange resin fiber or silicon-treated glass fiber is fixed between the material receiver 10 and the material holding plate 11. It is packed in the hardness.

4A, B, and C respectively show modified examples of the material receiver 10, and the one in FIG. 4A is a rod-shaped material receiver 1.
0 is formed in a square shape, the one shown in Fig. 4B has rod-shaped material receivers 10 positioned radially, and the one shown in Fig. 4C has an annular shape located in the center. A material receptacle 10 is formed by connecting the members and the container body 8 with three connecting members.

Note that the tubular body 2 and the suction operation part 3 constituting the pipette 1 may be made of different plastic materials, for example, the former may be made of a transparent and rigid resin, and the latter may be made of a different soft plastic material. Further, the insertion section 5 of the suction operation section 3 may be fitted onto the proximal end section 4 of the tubular body 2. Furthermore, the filter 7
may be a cylindrical shape or a tapered tube that expands downward, and the positions of the material receiver 10 and the material holding plate 11 may be interchanged vertically. In this case, the extrusion stage will pass.

In this invention, since the over-container has the above-mentioned structure, a certain amount of fibrous material is inserted into the inside of the over-container body and pushed together with the presser plate, so that it can be stuffed into the over-container body with a certain degree of hardness. is possible,
It is easy to pack the material, there is no variation in the packing hardness of the material, it is possible to even out the excess of the test liquid sucked up using the suction tool, and it is easy to pack the material. Since the overfill material is securely received by the material receiver or the holding plate, the overfill material does not protrude outside and become contaminated. In addition, since the material receiver is rod-shaped, it has a large excess area and low resistance, so it has the advantage of being able to absorb and drain a large amount of sample liquid uniformly from a wide area.

In addition, when carboxylic acid cation exchange resin fibers or silicon-treated glass fibers are used as the fiber-based material, pretreatment of the test liquid for pregnancy diagnosis reaction can be performed reliably.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is an exploded perspective view of a pipette and over-container, FIG. 2 is a longitudinal sectional view of the over-container, FIG. 3 is a cross-sectional view taken along the line of FIG. A, B, and C are views corresponding to FIG. 3 showing modified examples, respectively. 1...Suction tool, 8...Suction device body, 10...
Lumber receiver, 11...Porous material lumber presser plate, 12
...Fiber-based overmaterial.

Claims (1)

[Scope of utility model registration request] A rod-shaped material receiver is integrally formed to protrude from the inner circumferential surface of the holder body that is fitted onto the tip of the suction tool, and a porous sawn material presser plate is fitted inside the holder body to form a material receiver and a material holder. A strainer for collecting a test liquid, characterized in that a fiber-based strainer is sandwiched between the plate and the plate.