JPH04109045U - Rubber stopper - Google Patents

Abstract

(57) [Summary] [Configuration] The rubber stopper 1 includes a head 2 and a body 3 connected to the head 2.
and leg portions 4 connected to the body portion 3. A notch 12 is formed in the leg portion 4 and opens downward and extends in the vertical direction. The notch 12 has an isosceles triangle shape when viewed from the front,
The apex is cut out until it reaches a position where the top of the leg portion 4 is slightly left. As a result, when applying a diagonally upward tensile force to the rubber stopper 1 when attaching and removing the rubber stopper 1, the notch 12
deforms in the direction in which both ends of the leg 4 are closed, and the circumference of the leg 4 becomes smaller in appearance. As a result, the rubber stopper 1 can be easily removed from the open end 6. [Effect] When the rubber stopper 1 is attached, sufficient fixing strength to the pipe inner wall can be ensured, and the rubber stopper 1 can be easily removed.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to rubber stoppers for sealing the mouths of tubes such as medical test tubes and vacuum blood collection tubes. do.

0002

[Problems to be solved by conventional techniques and ideas]

Rubber stoppers are used to seal the mouths of medical test tubes. This rubber stopper has a head, a body connected to the head, and a cylindrical leg connected to the body, and the body and The legs fit into the mouth of the tube to seal it. By the way, when using a test tube as a vacuum blood collection tube, seal the tube opening with a rubber stopper in advance. A closed test tube is placed inside the container into which the blood collection needle is attached, and the base of the blood collection needle is secured with a rubber tube. By inserting the needle into the stopper and reducing the pressure in this state, the test tube ( Blood is collected into a vacuum blood collection tube). Alternatively, collect blood, etc., transfer the collected blood to a test tube, and pour the blood into the test tube. In some cases, the container is sealed with a stopper and used as a transport container. When the test tube was used as described above, the following problems occurred. If the rubber stopper is secured to the inner wall of the test tube, it will not be inserted into the test tube opening. The rubber plug cannot be easily removed. On the other hand, if we try to improve the ease of removal, the fixation strength with the inner wall of the test tube is small. You can use a small rubber stopper, but if you do this, the rubber stopper will not close when it is attached. It can easily come off and cause leakage. The purpose of the present invention is to provide an improved rubber stopper that solves all of the above problems. That's true.

0003

[Means to solve the problem]

In order to achieve the above purpose, the features of the present invention include a head and a The body has a body and a cylindrical leg connected to the body, and the body and the legs are inserted into the mouth of the tube. In the rubber stopper for sealing the pipe port, the leg part has a downward opening and an upward opening. The point is that a notch is formed that extends downward. The cutout may have a triangular shape.

0004

[Effect]

According to the present invention, when removing the rubber stopper, the rubber stopper is pulled diagonally upward from the notch. When tension is applied, the notches are formed in the legs of the rubber stopper, so it easily becomes elastic. transform. As a result, the rubber stopper can be easily removed from the pipe port.

[0005]

【Example】

1 to 6 show an embodiment of the present invention, FIG. 1 is a perspective view of the present invention, and FIG. 2 is a perspective view of the present invention. 3 is a plan view, FIG. 4 is a bottom view, FIG. 5 is a vertical cross-sectional view, and FIG. 6 is a diagram showing the use of the present invention. It is a longitudinal cross-sectional view showing a state. The configuration of the present invention will be explained below with reference to these drawings. I will clarify. The rubber stopper 1 is made of hard rubber with moderate elasticity, and has a head 2 and a head 2, and legs 4 that are connected to the body 3. , and the leg portion 4 are integrally formed. The body 3 and the legs 4 are attached to the mouth of the test tube 5. It is inserted and the open end 6 is sealed.

[0006] The head 2 has a truncated cone shape that tapers upward, and the top surface has an arc shape. A recess 7 is formed. Further, the body portion 3 has a cylindrical shape. In addition, the outer periphery of the trunk 3 The surface 8 may be formed into a tapered shape that tapers slightly toward the bottom. stomach. The leg portion 4 has a cylindrical shape, and its outer peripheral surface 9 tapers slightly toward the bottom. It is formed into a tapered shape, and its inner circumferential surface 10 is formed parallel to the axis. There is.

[0007] At the bottom of the outer peripheral surface 9, there is a tapered guide surface that tapers downward. 11 is formed, and this guide surface 11 allows the rubber stopper 1 to be easily attached to the test tube 5. can do. Furthermore, this leg portion 4 has a structure that opens downward and extends in the vertical direction. A notch 12 is formed. This notch 12 has an isosceles triangle shape when viewed from the front. , and is cut out until its apex reaches a position where the upper part of the leg part 4 is slightly left. still , in this embodiment, the cutout 12 was formed into an isosceles triangle; The design is not limited to this, but may also be a scalene triangle. By forming such a notch 12 in the leg portion 4, as will be described later, the rubber When removing the stopper 1 from the test tube 5, elastic deformation is not easily caused in the body 3 and legs 4. This makes it possible to tighten and remove it easily. Further, the outer circumferential surface 8 of the trunk 3 and the outer circumferential surface 9A above the notch 12 of the leg portion 4 are as shown in FIG. And as shown in FIG. 6, it elastically contacts the inner wall 13 of the test tube 5 to seal the test tube. This constitutes a close contact surface 14.

[0008] In this embodiment, the total length L1 of the rubber stopper 1 is 16.5 mm, and the length L2 of the notch is 16.5 mm. is 8 mm, and the diameter D of the trunk 3 is 9.5 mm, then the vertical length L3 of the contact surface 14 is is selected to be 3.5 mm. In this way, the vertical length L3 of the contact surface 14 is set to 2 mm or more. A rubber stopper that has the necessary fixing strength as a vacuum blood collection tube by securing the top of the tube. can be realized. Therefore, the test tube using the rubber stopper according to the present invention is It becomes possible to use it as an empty blood collection tube.

[0009] When removing the rubber stopper 1 configured as described above from the test tube 5, grasp the head 2 with your hand, etc. Pull it diagonally upward. For example, pull in the direction of the arrow shown in FIG. At this time, the notch Both sides of the legs 12 are deformed in the closing direction, and as a result, the circumference of the legs 4 is apparently becomes smaller. As a result, the rubber stopper 1 can be easily removed from the open end 6 of the test tube. can. In addition, when the rubber stopper 1 is inserted into the test tube 5, the contact surface 14 is sufficiently secured. Therefore, sufficient fixing strength to the tube inner wall 13 can be obtained. Therefore, capacity The rubber stopper 1 does not fall out easily, the test tube 5 is completely sealed, and the inside of the test tube is completely sealed. No solution leaks.

0010

[Effect of the idea]

As described above, according to the present invention, the notch is formed in the cylindrical leg. , when removing the rubber stopper, it is possible to easily cause elastic deformation in the rubber stopper. Become. This makes it possible to secure sufficient fixation strength to the inner wall of the pipe, and It is possible to realize a rubber stopper that is easy to remove.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a rubber stopper according to an embodiment of the present invention.

FIG. 2 is a front view of a rubber stopper according to an embodiment of the present invention.

FIG. 3 is a plan view of a rubber stopper according to an embodiment of the present invention.

FIG. 4 is a bottom view of a rubber stopper according to an embodiment of the present invention.

FIG. 5 is a longitudinal sectional view of a rubber stopper according to an embodiment of the present invention.

FIG. 6 is a longitudinal sectional view showing the state in which the rubber stopper according to one embodiment of the present invention is used.

[Explanation of symbols]

1... Rubber stopper, 2... Head, 3... Body, 4... Leg, 5... Test tube, 6... Open end, 12... Notch.

Claims (2)

[Scope of utility model registration request] Claim 1: A device comprising a head, a body connected to the head, and cylindrical legs connected to the body, wherein the body and the legs are inserted into the mouth of a tube to open the mouth of the tube. A rubber stopper for sealing, characterized in that the leg portion is formed with a notch that opens downward and extends in the vertical direction. 2. The rubber stopper according to claim 1, wherein the notch has a triangular shape.