JPS6342347Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sample collecting device that allows easy measurement of the total amount of samples by collecting reduced fractions and accumulating reduced fractions.

Conventionally, when collecting samples over time, it is necessary to collect samples from a storage container in a separate container each time, or when measuring the total amount, a large storage container or bag is required, which reduces the time and effort of transferring samples. It was also inconvenient to store and store the container.

The present invention solves the above-mentioned drawbacks, especially in order to sample a fixed amount of a sample at an arbitrary time or to measure the total amount over time, especially when the amount of the sample changes over time.

Recently, a urine volume measuring device has been devised in Japanese Patent Application Laid-Open No. 57-82744 as an instrument for achieving this purpose. This urine volume measuring device is equipped with a hollow tubular container whose cross-sectional area ratio is constant in both the upper and lower positions, and both containers communicate with each other at the bottom of the container in a self-opening/closing manner. However, the tubular container is equipped with an outlet that can be opened and closed.

In principle, this urine volume measuring device is extremely excellent for measuring the total amount by collecting the reduced fraction of a sample and accumulating the reduced fraction.

The inventors of the present invention focused on the fact that if a passage switching knob of a specific structure is provided in the communication part and the outlet at the bottom of this urine volume measuring device, it will become an excellent urine volume measuring device that is easier to handle. As a result of various studies on the structure of this pot, we came up with the sample collection device of the present invention.

The present invention will be explained in detail below with reference to the drawings.

FIG. 1 is an overall schematic diagram of the sample collection device of the present invention.

It is a container consisting of two chambers, a tubular container 1 and a capillary container 2 for collecting a sample, and the capillary container 2 has a discharge port 4 at the bottom, and the tubular container 1 is located near the discharge port 4 of the capillary container. It has an outlet 3 at the bottom. The capillary container 2 may be located inside the tubular container 1 to form a double container as shown in FIG. In that case, it is preferable that it be integrated with the tubular container 1. If it is located externally, it may be preferable because it simplifies operations when checking the amount of stored sample or discarding unnecessary samples from the tubular container 1.

If the ratio of the cross-sectional areas of the tubular container 1 and the capillary container 2 at the same height is kept constant, accurate reduction accumulation of the stored sample will be possible, and the sample in the capillary container 2 will be You can easily calculate the total amount by calculating backwards from the amount.

In order to maintain a constant cross-sectional area ratio, the tubular container 1 and the thin tubular container 2 each have a hollow cylindrical shape, but the shape is not limited to this, and each cross section may be square, rectangular, or elliptical. The cross-sectional area of the upper and lower parts may be the same, or the cross-sectional area of the upper part may be larger than that of the lower part.

Further, each of these containers is preferably molded from a transparent material, such as various transparent thermoplastic resins, so that the condition and amount of the sample can be easily checked visually.

A passage switching pot 5 is provided between the outlet 3 of the tubular container and the outlet 4 of the thin tubular container, and a storage tank 6 may be attached to the lower part if necessary.

When the storage tank 6 is attached, it may be integrated with the tubular container 1 and the thin tubular container 2, or may be of a fitting type by screwing or fitting, and furthermore, it may be a discharge port for discharging the stored liquid. , a cap may be provided.

FIG. 2 shows a schematic diagram of the passage switching pot 5.

The passage switching pot 5 is composed of a body 7 and a core 8, and the body 7 is connected to the outlet 3 of the tubular container.
and a first hole 9 and a second hole 10 at positions corresponding to the outlet 4 of the thin tubular container, and further has a third hole 11 on the opposite side of the second hole 10. There is. The core 8 also has a first hole 9 and a second hole 1 of the body.
0, and a second hole 1 of the body at a position approximately perpendicular to the communication passage 12.
A through hole 13 is provided which communicates the core with the third hole 11, and the core is provided with a handle 14 for rotating the core within the body as required.

Figure 2a shows the operation of the core 8 of the Kotsuk to connect the outlet 3 of the tubular container and the outlet 4 of the thin tubular container to the first hole 9 of the Kotsuk's body, the communication passage 12 of the core, and the outlet of the body. A state in which they communicate through the second hole 10 is shown. In this state, the sample injected into the tubular container is accumulated in the tubular container and the capillary container, the levels of both containers are the same, and a large amount of the sample is condensed into the capillary container.

If the capillary container is marked with a scale, the total volume of the sample can be easily determined by multiplying the cross-sectional area by a certain constant and calculating backwards.

In Fig. 2b, the core is rotated 90 degrees, and the outlet 3 of the tubular container and the outlet 4 of the capillary container are cut off.
The outlet 4 of the capillary container is located in the second hole 1 of the body.
0, it is opened to the outside or to the storage tank 6 through the through hole 13 of the core and the third hole 11 of the body. In this state, the reduced sample flows into the tubular container at the bottom, and if collected, the reduced sample can be easily collected and used for various analyzes and quantitative determinations.

Further, the total amount of the sample can be easily determined by calculating backward from the reduced sample amount.

If the storage tank 6 is installed at the bottom,
Depending on the structure of the storage tank, it may be difficult for the sample that has been sealed and reduced to flow to the bottom through the tank, but in this case, as shown in Figure 2,
If an air hole 15 is provided on the side of the body 7 of the pot and an air groove 16 is provided on the side of the core 8, air can be vented through these, and the sample flows out smoothly. Of course, when the sample is not flowing out, as shown in Figure 2a, the air hole 15 and air groove 1
6 is not connected, and the sample liquid in the storage tank 6 does not leak to the outside.

As described in detail above, the sample collection device of the present invention can easily reduce various collected samples by operating a kettle and collect reduced samples for various analyzes, observation, etc. It is possible to measure the total amount by calculating backwards from the reduced sample amount.

It is extremely suitable for applications where samples are collected continuously or discontinuously over time; for example, it is suitable for collecting samples of various wastewaters, and collecting samples of various biological fluids such as urine, blood, and pus. It is used.

[Brief explanation of the drawing]

FIG. 1 shows a schematic diagram of the sample collection device of the present invention, and FIG. 2 shows a schematic diagram of a passage switching section. Fig. 2a shows the state of the passage switching pot when the outlet of the tubular container and the outlet of the capillary container are in communication and the sample is being collected, and Fig. 2b shows the outlet of the capillary container being in communication with the outlet of the capillary container. This figure shows the state of the passage switching pot, which is open at the bottom and is used to collect reduced samples.

Claims (1)

[Scope of utility model registration request] A container consisting of two chambers: a tubular container and a capillary container with a smaller volume than the tubular container, the capillary container having a discharge port at the bottom, and the tubular container having a discharge port at the bottom near the discharge port of the capillary container. and a passage switching socket is provided between the two discharge ports, and the passage switching socket is composed of a body and a core, and the body has a first and a passage switching socket connected to the respective discharge ports of the tubular container and the thin tubular container. having a third hole on the opposite side of the second hole corresponding to the second hole and the outlet of the capillary container;
The core has a communication passage that communicates the first and second holes of the body, and further includes a through hole that communicates the second and third holes of the body at a position substantially perpendicular to the communication passage. A sample collection device comprising: