JPH0448532Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention aims to improve body fluid collection tubes used in clinical tests.
Not only can body fluids such as lymph fluid and pus be stored easily and hygienically, but also the stored body fluids can be accurately expressed drop by drop during testing without risk of contamination due to scattering or leakage. This product is a sanitary and safe body fluid collection tube that can help improve the efficiency and safety of clinical testing work at hospitals and other medical institutions.

[Prior art and problems to be solved]

As is well known, in medical institutions such as hospitals,
By collecting various body fluids such as blood, lymph, and pus from patients and health checkup subjects and testing them, we can diagnose the disease, discover the severity and complications, and estimate the prognosis. They also collect data to determine the health status of the person in question, and such clinical tests are a powerful weapon in modern medicine, greatly contributing to the precision and objectivity of medical treatment and health management.

However, despite the importance of such clinical tests, it is said that they pose great risks to medical personnel, such as doctors, laboratory technicians, and nurses, who are involved in the tests. By the way, taking a blood test as an example, all the blood collected from the test subject's blood vessels with a syringe is indiscriminately transferred to a body fluid collection tube called a spittoon, which is shaken and treated with an anticoagulant. The system is such that the necessary tests are carried out by mixing it with a liquid and placing it drop by drop on a glass slide, etc.
In reality, the collected blood that is being tested may be from patients with HB virus hepatitis, syphilis, or patients with various infectious diseases. However, the body fluid collection tubes (spitutsu) commonly used for these tests were test tube-shaped tubes with bottoms that were inserted and sealed with a cork-like stopper, without any ingenuity. is the current situation.

Therefore, the following complaints were heard among medical personnel:

When collecting blood from a subject with a syringe and transferring it to a collection tube, in addition to removing the syringe needle, the cap of the collection tube must also be removed. The work was complicated and unbelievable given the common sense of modern medicine, such as placing the removed injection needle somewhere where there will be no hindrance, or removing the cap from the collection tube and standing it up somewhere. They are forced to treat them with such carelessness, which can lead to leakage and scattering of sampled fluid.

Collected blood tends to adhere to the cap during shaking with the anticoagulant, and when the cap is removed, it easily scatters and gets into the eyes, nose, and mouth.

There is a risk that blood will overflow between the cap and the tube body due to capillary action and come into contact with the skin or hands of the person in charge of testing.

It is difficult to accurately dispense the required amount of sample liquid onto a slide glass, and there is a risk of overflowing by dispensing too much, or dripping on an inadvertent spot.

In particular, regarding the above-mentioned problems, there is even a report that more than half of the people, even experienced laboratory technicians, come into contact with the sampled liquid when removing the cap from the sample tube, so the request for improvement is very serious. There is something.

The present invention was developed in view of the risks and inconveniences mentioned above during conventional body fluid collection.
The tester can easily transfer the sample to the collection tube with one hand, the sampled liquid will not ooze out due to capillary action, and the sampled liquid can be precisely collected drop by drop during the test. To provide a hygienic and easy-to-use safety body fluid collection tube that can be extracted by lowering the extraction point to the location where the body fluid is to be extracted.

[Means adopted to solve the problem]

The means adopted by the present inventor in order to solve the above-mentioned problems will be explained based on the attached drawings.A cap 2 is attached to the mouth of a bottomed tube body 1 for body fluid collection for clinical tests. In the tube: The bottomed tube 1 is made of a plastic material to impart restoring elasticity, while the cap 2 (a) has a sampled liquid inlet 21a; an inner cap piece 21 that is attached to the inner cap piece 21; Insert boss 22 to be fitted
a, and an outer cap piece 22 having a small diameter extraction hole 22b formed through the boss 22a; By constructing the outer cap piece 22 with a double lid structure, it is possible to safely collect body fluids without the above-mentioned drawbacks. The pipe was realized.

〔Example〕

FIG. 1 is an elevational sectional view showing a first embodiment of the safety body fluid collection tube of the present invention, and FIG. 2 is an elevational sectional view showing the second embodiment. The difference between the first and second embodiments is that the type of extraction hole provided in the outer cap piece is different; in the former, the extraction hole has the same diameter over the entire length and has a beak-shaped tip. The difference is that in the latter case, the extraction hole is narrower on the tube body side and slightly thicker on the bottom side.

In FIGS. 1 and 2, the bottomed tube body 1 is integrally molded from plastic such as polypropylene resin or polyethylene resin, and when the body is pressed, it bends and deforms into a droplet shape, and when the pressure is released. It is given a restoring elasticity that allows it to return to its original shape. The deposit 3 on the inner surface of the bottom of the tubular body 1 in the embodiment shown in FIG. 1 is an anticoagulant for blood, and therefore, the product shown in FIG. 1 is used exclusively for blood tests.

Reference numeral 2 designates a cap molded from plastic material, consisting of an inner cap piece 21 and an outer cap piece 22 hinged thereto.

The inner cap piece 21 is attached to the outer peripheral surface of the mouth of the tube body 1, and has a sample liquid injection hole 21a in its center.

The outer cap piece 22 is hingedly connected to the inner cap piece 21,
The inner cap can be opened and closed. In the embodiment of FIGS. 1 and 2, the inner cap piece 21 and the outer cap piece 22 are both made of the same plastic material, and the plastic hinge H
They are connected so that they can be opened and closed. In the illustrated example, this hinge H is constructed by integrally molding the outer and inner pieces into a bridge shape from the same plastic material, and by making a thin V-cut in that part. Of course, it is also possible to use a separate hinge. The tongue piece 22c protruding on the opposite side of the hinge H is used to open the outer cap piece. For example, when transferring blood collected into a syringe to the collection tube, use the tongue piece 22c. If you push up from the bottom in the direction of the arrow, the outer cap piece 22 will open as shown by the broken line in Figure 1, and the sample liquid inlet 2 will open.
1a is exposed.

The outer cap piece 22 has an insert boss 22a projecting from the back surface thereof, which has a small diameter extraction hole 22b formed therethrough.When the outer cap piece 22 is closed, the insert boss 22a is inserted into the inner cap. When the outer cap piece 22 is inserted into the inlet 21a of the piece and sealed, and the outer cap piece 22 is opened, the boss 22a is simultaneously removed from the sampled liquid inlet 21a and the inlet is opened. On the other hand, insert boss 22
The squeezing hole 22b provided in a is formed to have a small diameter, and unless pressure is applied to the pipe body 1, the liquid will not leak from the squeezing hole due to the surface tension of the collected liquid. .

[How to use and how it works]

Taking the example product shown in FIG. 1 as an example, the case where it is used for a blood test is as follows.

First, remove the needle of the syringe used to collect blood and hold it in your right hand, while holding the collection tube (see Figure 1) in your left hand and push up the tongue piece 22c in the direction of the arrow with your left thumb. Then, the outer cap piece 22 is in the state shown by the broken line, and the sample liquid inlet 21a of the inner cap piece is opened.

Then, insert the tube opening of the syringe held in your right hand into the injection port 21a to transfer the collected blood into the tube body 1. Once the transfer is completed, the outer cap
Close the piece 22. Next, the collection tube is shaken to mix the anticoagulant 3 into the collected blood, but in the product of this example, the insert boss 22a protrudes into the injection port 21a and blocks it. Therefore, the collected liquid will not leak during shaking. However, in the collection tube of the present invention, since the extraction port 22b of the outer cap piece 22 is formed through the extraction port 22b, it appears as if the collected blood is spilling from there. However, in the present invention, the extraction hole 22
Since b is formed to have a small diameter, due to the surface tension of the collected blood itself, it will never leak or scatter from the extraction hole 22b.

Next, it is necessary to drip the collected blood onto a slide glass depending on the specific test item, but when using the collection tube of the present invention,
The tube body 1 is made of a plastic material such as polypropylene resin or polyethylene resin and has resilience, so if the body of the tube body 1 is pressed as if handling a dropper, the pressure inside the tube increases and the squeeze outlet 22
It is possible to accurately apply the sampled liquid drop by drop to the target location from b, and in this case, the sampled blood will not inadvertently adhere.

[Effects of this invention]

As explained above, in the collection tube of the present invention, the tube body 1 is made resilient and has a double cap with an inner cap piece having the structure (a) and an outer cap piece having the structure (b). ,
Not only can you easily transfer the sampled liquid with one hand, there is no risk of the sampled liquid leaking or scattering even if you use the shaking operation. The sample solution can be accurately applied drop by drop onto the slide glass according to the situation, and there is no risk of it accidentally adhering to other areas, making it extremely hygienic to use.

Therefore, according to the present invention, all the problems conventionally considered to be disadvantageous with this type of collection tube can be solved, and it is also extremely convenient to use and can be used for clinical tests that are basically performed independently. It can be said that this method will greatly contribute to improving the safety and streamlining of clinical tests in medical institutions such as hospitals.

[Brief explanation of the drawing]

The drawings show an example of a safety body fluid collection tube manufactured by applying the present invention, and FIG. 1 is an elevational sectional view of the first embodiment, and FIG. 2 is an elevational sectional view of the second embodiment. be. DESCRIPTION OF SYMBOLS 1... Bottomed tube, 2... Cap, 21... Inner cap piece, 21a... Collection liquid inlet, 22... Outer cap piece, 22a
...Insert boss, 22b...Extraction outlet, 3...
...anticoagulant, H...hinge.

Claims (1)

[Scope of Claim for Utility Model Registration] In a body fluid collection tube for clinical tests, which is formed by covering the mouth of a bottomed tube 1 with a cap 2: The bottomed tube 1 is made of a plastic material. The cap 2 has (a) an inner cap piece 21 which has a sample liquid inlet 21a and is itself attached to the mouth of the tube body 1; (b) the inner cap piece 21; An insert boss 22 is connected to the piece 21 by a hinge H so that it can be opened and closed, and is fitted on the back side of the piece 21 so that it can be inserted into and removed from the injection port 21a.
A safety body fluid collection tube characterized in that it has a double cap structure including: an outer cap piece 22 having a boss 22a having a small diameter extraction hole 22b formed therethrough;