JP2001219949A - Stopper for vacuum container for gathering specimen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stopper for a vacuum container for gathering specimens, capable of easily putting the stopper on the specimen gathering container by manual operation. SOLUTION: Spaces 14 opening downwardly in an axial direction are provided in a split state among small diameter leg parts 12 provided in a suspended state from the top of a head 11 of the stopper main body 1 made of a rigid synthetic resin. An elastic annular member 2 is fitted to the leg parts 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a plug for a vacuum sample collection container.

[0002]

2. Description of the Related Art Conventionally, a sample collection container in which a small-diameter leg is suspended from the top of a rigid synthetic resin body at the opening of the sample collection container, and a soft elastomer layer is formed on the outer peripheral surface of the leg. Japanese Patent Application Laid-Open No. H10-201742 discloses that a plug is detachably inserted and hermetically sealed.

[0003]

However, in such a plug for a vacuum sample collection container, since the frictional resistance of the soft elastomer is large, the plug is manually inserted into the sample collection container. There was a problem that was difficult.

[0004] It is an object of the present invention to solve the above-mentioned conventional problems and to provide a plug for a vacuum sample collection container, which can easily and manually plug the plug into the sample collection container.

[0005]

According to the plug for a vacuum sample collection container of the present invention, an axial gap that opens downward is divided into small-diameter legs vertically extending from the top of a rigid synthetic resin body. And an elastic ring is fitted to the leg.

In the plug for a vacuum sample collection container of the present invention,
The shape of the top of the hard synthetic resin body is not particularly limited, but is preferably substantially cylindrical with a bottom so that it can be securely gripped with a fingertip when plugged, and the peripheral wall has a parallel line shape. It is preferable that anti-slip irregularities such as an oblique lattice pattern or the like are engraved.

[0007] A circular through hole is formed in the center of the top of the head of the main body, and a needle tube for sample collection can be pierced into the through hole, and when the needle tube is withdrawn, it is pierced. A thermoplastic elastomer rod is tightly fitted so that the needle hole is reclosed. The circular rod closes the upper surface of the elastic annular body with a plate-like lid,
It may be provided integrally with the upper surface of the lid.

In the plug for a vacuum sample collection container of the present invention,
The hard synthetic resin used for the main body is not particularly limited. For example, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyamide (P
A), polycarbonate (PC), polyacetal (P
OM), polypropylene (PP), and high-density polyethylene (HDPE).

The number of downwardly opened axial gaps provided in the legs of the main body is not particularly limited so that the diameter can be reduced when the sample is inserted into the opening of the sample collection container. It is preferable to divide a plurality of pieces at equal intervals so as not to generate directionality. The gap does not necessarily have to be provided up to the upper end of the leg, but may be provided up to the middle of the leg, leaving the root portion in a strip shape.

The base of the leg may be reduced in diameter so as to reduce the frictional force with the inner peripheral surface of the opening of the sample collection container at the time of stoppering. The vertical cross-sectional shape of the leg portion whose root portion is reduced in diameter is not particularly limited, for example, even if it is a divergent diagonal line,
The shape may be a polygonal line shape or a substantially circular arc shape.

In the plug for a vacuum sample collection container according to the present invention,
The material of the elastic annular body fitted to the leg is not particularly limited, and examples thereof include a synthetic rubber and a thermoplastic elastomer.

The synthetic rubber is not particularly restricted but includes, for example, butadiene rubber (BR), isoprene rubber (IR), chloroprene rubber (CR), urethane rubber and the like which have been widely used.

The thermoplastic elastomer is not particularly limited. For example, a polyester-based thermoplastic elastomer (T
PEE), urethane-based thermoplastic elastomer (TP
U), polyamide-based thermoplastic elastomer (TPE)
A), olefin-based thermoplastic elastomer (TPO) and the like.

The combination of the hard synthetic resin used for the main body and the thermoplastic elastomer used for the elastic annular body is selected to have good mutual adhesion.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 (a) and 1 (b) are schematic views showing a cross section of a first embodiment of a plug for a vacuum sample collection container according to the present invention, and FIGS.
FIG. 3A is a schematic view showing a cross section of the main body of the first embodiment of the plug for a vacuum sample collection container of the present invention shown in FIG. 1, and FIG.
(B) is a schematic diagram showing a cross section of a second embodiment of the plug for a vacuum sample collection container of the present invention, and FIG. 4 is a schematic diagram showing a cross section of a third embodiment of the plug for a vacuum sample collection container of the present invention. FIG. 5 is a schematic diagram showing a cross section of a fourth embodiment of the plug for a vacuum sample collection container of the present invention, and FIG. 6 is a schematic diagram showing a cross section of a fifth embodiment of the plug for a vacuum sample collection container of the present invention. It is.

In the first embodiment of the plug for a vacuum sample collection container according to the present invention shown in FIG. 1, reference numeral 1 denotes a PET main body, which has a small diameter from a top 11 having a substantially bottomed cylindrical shape. Cylindrical legs
12 is provided vertically, and a circular through hole 13 is formed in the center of the crown 11.

As shown in FIG. 2, the legs 12
An axial gap 14 that opens downward while leaving the root portion in a strip shape is provided at equal intervals, and the leg portions 12 are equally divided as shown in FIG. .

Reference numeral 2 denotes an elastic annular body made of TPEE. The upper end of the annular body 2 is closed by a plate-like lid 21.
On the upper surface of 21, a rod-shaped projection 22 having a diameter slightly larger than the inner diameter of the through hole 13 is provided.

The annular body 2 has an upwardly open circumferential groove.
23 are engraved intermittently, and the groove 23
12, the projection 22 is inserted into the through hole 13 of the main body 1,
The annular body 2 is fitted to the leg 12.

In the second embodiment of the plug for a vacuum sample collection container according to the present invention shown in FIG. 3, as shown in FIG. The second embodiment is the same as the first embodiment, except that the annular body 2 in which the circumferential grooves 23 which are open upward and are continuously engraved are engraved is fitted to the leg 12. Description is omitted because there is.

In the third embodiment of the plug for a vacuum sample collection container according to the present invention shown in FIG. 4, the leg portion 12 has a vertical cross section and an approximately convex arc shape, and the root portion has The description is omitted because it is the same as the first embodiment except that the diameter is reduced.

In the fourth embodiment of the plug for a vacuum sample collection container according to the present invention shown in FIG. 5, the leg portion 12 has a vertical cross section and a substantially bent line, and the root portion has a reduced diameter. The description is omitted because it is the same as that of the first embodiment except for the above.

In the fifth embodiment of the plug for a vacuum sample collection container according to the present invention shown in FIG. 6, the leg portion 12 has a vertical cross-sectional shape and has a diagonal line with a divergent end, and the root portion is shrunk. Except for the diameter, the configuration is the same as that of the first embodiment, so that the description is omitted.

[0024]

The plug for a vacuum sample collection container according to the present invention is configured as described above, so that when the stopper is inserted into the opening of the sample collection container, the legs are reduced in diameter and the sample collection container is closed. Can be easily performed by hand.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a cross section of a first embodiment of a plug for a vacuum sample collection container according to the present invention.

FIG. 2 is a schematic view showing a cross section of the main body of the first embodiment of the plug for a vacuum sample collection container of the present invention shown in FIG. 1;

FIG. 3 is a schematic view showing a cross section of a second embodiment of the plug for a vacuum sample collection container according to the present invention.

FIG. 4 is a schematic view showing a cross section of a third embodiment of the stopper for a vacuum specimen collection container according to the present invention.

FIG. 5 is a schematic view showing a cross section of a fourth embodiment of the plug for a vacuum sample collection container according to the present invention.

FIG. 6 is a schematic view showing a cross section of a fifth embodiment of the plug for a vacuum sample collection container according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 2 Elastic annular body 11 Top part 12 Leg part 13 Through-hole 14 Gap 21 Plate-shaped lid part 22 Projection 23 Groove

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2G045 CA25 HA06 HA13 HA14 HA20 3E084 AA12 CA01 CC03 CC04 CC05 CC08 EA04 EB03 EC03 EC04 EC05 EC09 FA09 FD04 GA08 HA03 HB01 HC03 HD04 4C038 TA01 UB10 UD01 UD04

Claims (1)

[Claims] An axial gap that opens downward is provided in a small-diameter leg vertically extending from the top of a rigid synthetic resin body, and an elastic annular body is fitted to the leg. A plug for a vacuum sample collection container, characterized in that: