JPH02122263A - Liquid extractor - Google Patents

Abstract

PURPOSE:To simply execute the quantitative extraction and offer of a liquid sample by a single instrument by providing a pressing part for blocking up water-tightly a cross section of an outer casing on the lower end part of a rod-like pusher charged from an opening of the upper end of the outer casing. CONSTITUTION:On the lower end part of a tubular outer casing 3 whose both ends are opened and whose lower end opening 2 is brought to diameter reduction, a liquid inflow port 4 is provided in height in which an internal space of the outer casing 3 becomes a prescribed volume. Also, on the lower end part of a rod-like pusher 7 inserted so as to be freely movable up and down from an opening 6 of the upper end of the outer casing 3, a pressing part 8 which can block up watertightly a lateral cross section of the internal space of the outer casing 3 is provided. In this state, when a liquid which flows out is applied to a part of the outside peripheral surface of the outer casing 3 in the upper part than the liquid inflow port 4, the liquid adhering to the outside peripheral surface of the outer casing 3 flows along the outside peripheral surface of the outer casing 3 and flows into the inside of the outer casing 3 from the liquid inflow port 4. Since an opening 2 of the lower end of the outer casing 3 forms a very small hole passages, the liquid does not leak substantially from the opening 2 in a state that no external pressure is applied, and the liquid which flows in from the liquid inflow port 4 is accumulated in the inside of the outer casing 3.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a liquid sampler. Specifically, the present invention relates to a liquid sampler capable of quantitatively collecting and dispensing a liquid sample such as urine.

(Prior art) Conventionally, in tests that require quantitative urine collection, such as pregnancy diagnosis, urine is collected using a paper tip, etc., and the urine collected in the paper tip is collected using a dropper, etc. The procedure was to measure the required amount of urine and transfer it to a test tube containing a reagent.

However, this method is not only complicated to operate, but also requires an unnecessary amount of urine to be collected due to the large capacity of the urine collection device, such as a paper cot, and the large adhesion surface area makes it difficult to dispose of hygienically. This was a problem because it was impossible to do so. Furthermore, when using a urine collection device such as a paper pot, it is difficult to hold the urine collection device in a position that will receive the urine that has been released, and there is a risk that urine may splash onto the hands and arms holding the urine collection device. However, it could not be said to be desirable from a hygiene standpoint or from a physiological standpoint.

(Problems to be Solved by the Invention) Therefore, the present invention aims to provide a novel liquid sampling device. A further object of the present invention is to provide a liquid sampler that allows quantitative collection and delivery of a liquid sample to be easily performed using a single device. Another object of the present invention is to provide a liquid sampler that allows the collection and delivery of urine samples to be carried out hygienically.

(Means for Solving the Problems) The above-mentioned various openings are provided in a tubular outer cylinder which is open at both ends and whose lower end opening is reduced in diameter to form a fine hole passage, and a hole near the lower end of the outer cylinder is provided. A liquid inlet that communicates from the outer surface to the inner surface is provided at a height from the lower end of the inner space of the outer cylinder to a predetermined volume. an outer cylinder, comprising, at least at a lower end thereof, a pressing part having a cross-sectional shape capable of slidingly contacting a surface and liquid-tightly closing a cross-section of an internal space of the outer cylinder at least below the liquid inlet; 1. This is achieved by a liquid sampler characterized by having a rod-shaped pusher movably inserted through an opening at one end.

The present invention also provides a wall surface that protrudes outward over the entire circumference from the outer peripheral surface of the outer cylinder at the position where the lower end of the liquid inlet is located, and is formed by a wall surface that is bent upward.
A funnel-shaped lfk body holder that surrounds the entire circumference of the outer cylinder at the liquid inlet portion indicates a liquid sampling device. The present invention further provides that the inner space of the outer cylinder is formed in an axially arranged outer space that is not blocked by the pressing part of the pusher in a part of the outer cylinder from the position where the liquid inlet is provided. This figure shows a liquid sampler having a slit-shaped groove that protrudes in the opposite direction.

(Function) In the liquid sampler of the present invention, a tubular outer cylinder that is open at both ends and whose lower end opening is reduced in diameter to form a fine hole passage is provided with a tube that is sufficiently close to the lower end of the outer cylinder and A liquid inlet that communicates from the outer surface to the inner surface is provided at a height where the internal space has a predetermined volume from the lower end of the outer cylinder. When applied to a portion of the outer circumferential surface, the liquid that has landed on the outer circumferential surface of the outer cylinder (=J) travels along the outer circumferential surface of the outer cylinder to the liquid inlet, and flows into the outer cylinder from the liquid inlet. Since the opening at the lower end of the outer cylinder has a minute hole as described above, when no external pressure is applied, the liquid does not substantially leak from the opening, and the ltk body flowing from the liquid inlet is The liquid is stored inside the outer cylinder.

In this manner, the liquid sampler of the present invention has a liquid storage space inside the outer cylinder below the liquid inlet that communicates from the outer surface to the inner surface of the outer cylinder. It is desirable that the liquid sample obtained be of a constant and small volume required for subsequent testing.

When performing sampling MKm production, the liquid that adheres to the outer circumferential surface of the area where the outflowing liquid is applied travels along the outer circumferential surface of the tubular body to the liquid inlet and flows into the outer cylinder from the liquid inlet. However, due to the shape, it is difficult for the entire amount of liquid attached to the outer circumferential surface of the outer cylinder to flow into the inside of the outer cylinder through the liquid inlet, especially when the storage ltk space is small as described above. If this happens, more than that volume cannot flow into the interior, and the excess liquid moves further down the outer circumferential surface, so naturally there is liquid on the outer circumferential surface below the liquid inlet. layer on. For this reason, if the holding position of the liquid sampler of the present invention is below the area where the outflowing liquid is applied, if the liquid to be collected is a liquid such as urine, the retention property Problems arise from this aspect. However, in the liquid sampler of the present invention, the liquid inlet is located sufficiently close to the lower end of the outer cylinder, as described above, and the outer cylinder has a length of 1.5 mm from the liquid inlet. (In the case of a liquid sampler, the liquid sampler has a shape that extends downward.) -1 of the vessel
- The end part can be used as a holding position, and when performing the liquid sampling operation as described above, the liquid can be drawn into the desired liquid sampling position without causing the hand or arm holding the liquid sampler to hold the liquid. You can easily carry liquid containers with you.

Therefore, even if the volume of the liquid storage space formed inside the outer cylinder below the liquid inlet is a constant and small volume required for subsequent tests, there will be no problem with retention, as compared to conventional This makes it possible to easily collect a quantitative liquid sample without requiring operations such as collecting the liquid into a large-capacity liquid sampler and separating the required amount. Furthermore, since the volume space of the M storage tank is made small in this way, it is possible to avoid collecting an unnecessary amount of liquid and to reduce the surface area on which the liquid adheres. etc., there are few hygiene problems when disposing of the product.

Furthermore, in the liquid sampler of the present invention, the outer circumferential surface of the outer tube is in sliding contact with the inner circumferential surface of the outer tube, and at least a cross section of the internal space of the outer tube is formed below the liquid inlet. A rod-shaped pusher is disposed that is vertically movably inserted into the opening at one end of the outer cylinder, and has a pushing section having a cross-sectional shape that can be closed in a liquid-tight manner and biased toward at least the lower end.

While the tip of the pressing part of this pusher is located above the liquid inlet provided in the outer cylinder, the outward internal space is communicated with the outside through the liquid inlet. Even if the cross section of the internal space is liquid-tightly closed by the pressing part of the lfk body inflow port, pressure will be applied to the liquid accumulated in the outer cylinder at the bottom of the lfk body inflow port due to the movement of the liquid. However, when the tip of the pressing part passes through the liquid inlet, the pressing part of the pusher liquid-tightly closes the cross section of the internal space of the outer cylinder, causing liquid to accumulate in the internal space. The liquid can be pressurized from above, and the accumulated 21M body is gradually discharged from the lower end opening formed into a minute hole path as the pusher moves forward. In addition, since the opening at the lower end of the sampling device of the present invention is made minute, when the liquid inlet is blocked by the tip of the pressing part, the internal space becomes almost airtight. Therefore, when the tip of the pressing part blocks the liquid inlet, there is a difference in the pressure applied to the pressing part due to the difference in the opening area between the lower end opening and the liquid inlet, and this pressure difference causes the pressing part to temporarily move inside the outer cylinder. It will be in a locked state. In this manner, the difference in opening area between the liquid inlet and the lower end opening makes it possible to temporarily lock the pusher in a predetermined position that regulates the stored liquid to a constant volume. Note that the locking of the pusher at this predetermined position can be made more reliable by providing a convex locking portion on the inner surface of the outer cylinder.

-1- As described above, the pusher may be once locked in a predetermined position, so that the top end of the pusher protruding from the upper end of the outer cylinder is held at the holding position, which is the upper end of the liquid sampler. The liquid sample collected quantitatively inside the outer cylinder by pressing down can be easily transferred quantitatively into a test tube etc. when testing the liquid sample. be.

As described above, by using the liquid sampler of the present invention, collection, quantitative determination, and transfer of a liquid sample can be performed extremely easily and with a single device.

(Example) Hereinafter, the present invention will be explained in more detail with reference to Examples.

Fig. 1 is a perspective view showing the structure of an embodiment of the liquid sampling device of the present invention, Fig. 2 is a longitudinal sectional view of the embodiment, and Figs. 3a to 3C are process diagrams showing the operating method of the embodiment. , FIG. 4 is a perspective view showing the structure of another embodiment of the liquid sampler of the present invention, FIG. 5 is a longitudinal sectional view of the same embodiment, and FIG. 6 is a sectional view taken along line A-A of the same embodiment. 7th
Figures a-c are process diagrams showing the operating method of the same embodiment, Figure 8 is a perspective view showing the structure of still another embodiment of the liquid sampler of the present invention, and Figure 9 is a longitudinal section of the same embodiment. 10 is a sectional view drawn along line B-B of the same embodiment, and FIG. 11 is a cross-sectional view drawn along line C-C of the same embodiment.
FIG. 12a-'c is a diagram showing the operating method of the embodiment.

The liquid sampler 1 of the present invention is open at both ends, as in the embodiments shown in FIGS. 1-3, the embodiments shown in FIGS. 4-7, and the embodiments shown in FIGS. 8-12. It has a tubular outer cylinder 3 whose lower end opening 2 is reduced in diameter to form a fine hole passage. The lower end opening 2 has a diameter that is large enough to prevent the liquid sample from leaking when a predetermined volume of liquid sample is stored inside the outer cylinder 3 as described later. .

Then, at a position sufficiently close to the lower end of the outer cylinder 3 and at a height such that the internal space of the outer cylinder 3 has a predetermined volume from the lower end, a liquid inlet 4 that communicates from the outer surface of the outer cylinder 3 to the inner surface is connected. It is provided.

The height of the liquid inlet 4 defines the size of the liquid storage space 5 formed inside the outer cylinder 3 below the liquid inlet 4 in the liquid sampler 1 of the present invention. The size of this liquid storage space 5 is determined according to the amount required for subsequent examinations, tests, etc. of the collected ltk body sample, but it is generally small because only the necessary amount is collected. Therefore, the liquid inlet 4 is disposed at a position close to the lower end of the outer cylinder 3 (1 inch), and the outer cylinder 3 is located 1 inch above the liquid inlet 4. The shape of the liquid inlet 4 is large enough to allow the liquid to pass from the outside of the outer cylinder 3 to the inside without applying any external force. If present, there is no particular limitation, and even if it exists only in a part of the circumferential surface of the outer cylinder 3 as in the embodiments shown in FIGS. 1 to 3 and the embodiments shown in FIGS. 4 to 7, Further, as in the embodiments shown in FIGS. 8 to 12, a plurality of openings may be formed over almost the entire circumferential surface of the outer cylinder 3.

Furthermore, in the liquid sampler 1 of the present invention, the liquid sample stored in the liquid storage space 5 formed inside the outer cylinder 3 is operated at the upper end of the liquid sampler 1, and the lower end of the outer cylinder 3 is opened. A rod-shaped pusher 7 is disposed inside the outer cylinder 3 so as to be freely movable downward through the upper end opening 6 of the outer cylinder 3 so that the liquid can be discharged from the upper end 6 of the outer cylinder 3. The pusher 7 has a portion including at least its lower end that is in sliding contact with the inner circumferential surface of the outer cylinder 3, and at least below the liquid inlet 4, the cross section of the internal space of the outer cylinder 3 is A pressing portion 8 having a cross-sectional shape h" that can be tightly closed is formed. This pressing portion 8 is formed in the embodiment shown in FIGS. It is preferable that only the lower end portion of the rod-shaped pusher 7 is formed with an enlarged diameter as in the embodiments shown in FIGS. The entire pressing part 8
It doesn't matter if it becomes. In addition, in these embodiments, a gas scaler (9) is arranged to surround the outer periphery of the lower end portion of the bar-shaped pusher 7 whose diameter is enlarged, and the outer circumferential surface of the pressing portion 8 is formed of an elastic member such as rubber. However, it is preferable to form the outer circumferential surface of the pressing portion 8 from an elastic material such as rubber, as this enables smoother sliding contact with the inner circumferential surface of the outer cylinder 3.

In this way, the outer peripheral surface of the pressing part 8 comes into sliding contact with the inner peripheral surface of the outer cylinder 3, so that the pusher 7 inserted into the outer cylinder 3 can position its lower end at any position relative to the outer cylinder 3. can be held and locked.

Further, in the liquid sampler of the embodiment shown in FIGS. 4 to 7, the outer cylinder 3 has a different internal space cross-sectional shape above and below the position where the liquid inlet 4 is provided, so that the liquid On one side from the position where the inlet 4 is provided, the internal space has a slit-shaped groove 10 arranged in the axial direction and protruding outward. This slit-shaped groove 10 is located substantially on the back side of the liquid inlet 4, and the slit-shaped groove 10 is located on the back side of the liquid inlet 4.
It is assumed that it will not be blocked by the pressing part 8.

Therefore, the liquid accumulated in the inner space of the outer cylinder 3 is transferred to the pusher 7.
When draining a certain amount of liquid from the lower end opening 2 of the liquid storage space by pressing down, even if an excessive amount of liquid flows into the internal space of the outer cylinder 3 during liquid sampling, the excess amount By discharging the liquid into the groove 10, the excessive amount of liquid will not be spilled out again from the liquid inlet 4 during the drain operation, and the operability will be improved.

In addition, in the liquid sampler of the embodiment shown in FIGS. 8 to 12, in order to direct the liquid that has arrived at the outer circumferential surface of the outer cylinder 3 (-=J) to the liquid inlet 4, the lower end of the liquid inlet 4 is The outer cylinder 3 is completely covered at the liquid inlet portion, which is formed by a wall surface that protrudes outward over the entire circumference from the outer peripheral surface of the outer cylinder 3 at the height where The funnel-shaped liquid receiver surrounding the circumference is provided with a part 11. By providing the part 11 in the liquid receiver communicating with the liquid inlet 4 in this way, the flow from the outside of the outer cylinder 3 to the inner space when collecting liquid is prevented. The inflow of liquid through the liquid inlet 4 is improved, and the operability is further improved.

Moreover, in the liquid sampler 1 of the present invention, the embodiments shown in FIGS. 1 to 3, the embodiments shown in FIGS. 4 to 7, and the embodiments shown in FIGS.
As in the embodiment shown in FIG. 2, if the upper end of the outer cylinder 3 is provided with a gripping collar 12 that protrudes from the outer circumferential surface, and the pusher 7 is further provided with a pusher 13 at the upper end,
This is desirable because the liquid sampler 1 can be held and operated more easily.

Furthermore, in these embodiments, a convex locking portion 14 that slightly reduces the inner diameter of the outer cylinder 3 is provided on the inner circumferential surface of the outer cylinder 3 near the upper end opening 6. This prevents the pusher 7 from accidentally coming off from the outer cylinder 3.

Next, taking the case of urine collection as an example, the operation of collecting a liquid sample using the liquid sampler 1 of the present invention will be explained.
As shown in FIG. 7a or FIG. 12a, when the pusher 7 is pulled up in one direction and the lower end of the pusher is located above the liquid inlet 4 in the outer cylinder 3,
Hold one end of the outer cylinder 3 or the pusher 7, bring the liquid sampler 1 close to the flow of urine flowing out, and press the outer peripheral surface of the outer cylinder 3 at the blade below the holding part and slightly above the liquid inlet 4. I'll apply it to a part of it. Urine attached to the outer circumferential surface of the outer cylinder 3 is
The liquid moves downward along the outer circumferential surface of the outer cylinder 3 and enters the liquid inlet 4.
The urine that has reached this level flows into the internal space of the outer cylinder 3 through the liquid inlet 4 and is stored in the liquid storage space 5 formed inside the outer cylinder 3 below the liquid inlet 4. In addition, in such a urine collection operation, if the liquid receiver part 11 is provided as in the embodiment shown in FIG. It is easy to collect the urine in the inlet 4, and there is no need to pay particular attention to the direction of the outer cylinder 3 to which the urine is applied, or to hold the liquid sampler 1 tilted during the urine collection operation.

When a certain amount of urine has been collected to fill the liquid storage space 5 formed inside the outer cylinder 3 (liquid no longer flows in from the liquid inlet 4), the liquid sampler 1 is separated from the flow of urine, and the urine collection and operation are completed. stop.

Next, the pusher 7 is pushed down, and as shown in FIG. 3b,
As shown in FIG. 7b or 12b, the pusher 7
The lower end of the liquid inlet 4 is closed within the outer cylinder 3. If an excessive amount of liquid has flowed into the internal space of the outer cylinder 3 during liquid sampling, during the transition to this state, the excessive amount of liquid is spilled out again from the liquid inlet 4 to the outside.
Only a certain amount of urine remains in the liquid storage space 5. As shown in Fig. 7b, the internal space on one side from the position where the liquid inlet 4 is provided has a slit-shaped groove 10 arranged in the axial direction and protruding outward. If it is, as described above, the excess amount of urine can escape into the groove 10, and the amount of urine can be regulated to a constant amount without spilling the excess amount of urine to the outside from the liquid inlet 4 again. .

Thereafter, as shown in FIG. 3c, 7c, or 12c, the pusher 7 is further pushed down, and a quantitative amount of urine stored in the liquid storage space 5 is released from the lower end opening of the outer cylinder 3. 2
The urine is then drained and transferred to another container such as a test tube placed below the lower end opening 2 in which the urine sample is subsequently tested or assayed.

(Effects of the Invention) As described above, the present invention provides a tubular outer cylinder which is open at both ends and whose lower end opening is reduced in diameter to form a minute hole passage, and which is sufficiently close to the lower end of the outer cylinder. In addition, a liquid inlet that communicates from the outer surface to the inner surface is provided at a height such that the inner space of the outer cylinder has a predetermined volume from the lower end; an outer cylinder comprising, at least at a lower end thereof, a pressing portion having a cross-sectional shape that is in sliding contact with a peripheral surface and can liquid-tightly close a cross-section of an internal space of the outer cylinder at least below the liquid inlet; This liquid sampler is characterized by having a rod-shaped pusher inserted into the end opening so that it can move up and down, so the pusher can be locked in any position, allowing liquids such as urine to be collected. Quantitative sampling and dispensing of a sample can be easily performed using a single device, and furthermore, in the liquid sampler of the present invention, the holding position can be positioned above the flow of the liquid to be sampled. and because the volume of the liquid storage tank can be made small, even if the liquid sample to be collected is urine, it is easy to dispose of the liquid sampler when collecting the liquid sample and after use. There are also fewer problems with hygiene.

In addition, in the liquid sampler of the present invention, the wall surface is formed by a wall surface that protrudes outward over the entire circumference from the outer peripheral surface of the outer cylinder at a height where the lower end of the liquid inlet is located, and is further bent upward. In addition, a funnel-shaped liquid bone that surrounds the entire circumference of the outer cylinder is provided at the liquid inlet portion, or an inner portion of the outer cylinder is provided above the position where the liquid inlet is provided. If the space has a slit-shaped groove disposed in the axial direction and protruding outward so that it is not blocked by the pressing part of the pusher, it is possible to prevent the storage and drainage of the liquid in the liquid sampling device. The operability is further improved and it becomes more advantageous.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the structure of an embodiment of the IVK extractor of the present invention, Fig. 2 is a longitudinal sectional view of the embodiment, and Figs. 3a to 3C are process diagrams showing the operating method of the embodiment. , FIG. 4 is a perspective view showing the structure of another embodiment of the liquid sampler of the present invention, FIG. 5 is a longitudinal sectional view of the same embodiment, and FIG. 6 is a sectional view taken along line A-A of the same embodiment.
7a-c are process diagrams showing the operating method of the same embodiment, FIG. 8 is a perspective view showing the structure of still another embodiment of the liquid sampler of the present invention, and FIG. 9 is a diagram of the same embodiment. A vertical sectional view, FIG. 10 is a sectional view taken along line B-B of the same embodiment, and FIG. 11 is a C-sectional view of the same embodiment.
12A-C are cross-sectional views drawn along line C, and FIGS. 12A to 12C are process diagrams showing the operating method of the same embodiment. 1...Liquid sampler, 2...Lower end opening, 3...Outer tube, 4
. . . Liquid inlet, 5. Liquid storage space, 6. Upper end opening, 7. Pusher, 8. Pressing portion, 9. Gasket, 10. Slit-shaped groove, 1], . . . liquid bone portion, 12 . . . grasping collar portion, 13 . . . pressing collar portion, 14 .

Claims (4)

[Claims] (1) A tubular outer cylinder that is open at both ends and whose lower end opening is reduced in diameter to form a fine hole passage, is sufficiently close to the lower end of the outer cylinder and whose internal space is smaller than the lower end. A liquid inlet is provided that communicates from the outer surface to the inner surface at the height of the volume, and the outer circumferential surface is in sliding contact with the inner circumferential surface of the outer tube, and at least the liquid inlet is in contact with the inner circumferential surface of the outer tube. A rod-shaped rod-shaped member inserted from the upper end opening of the outer cylinder so as to be vertically movable, the rod-shaped member having a pressing portion having a cross-sectional shape capable of liquid-tightly closing the internal space cross-section of the outer cylinder at the lower end thereof. A liquid sampler characterized by a pusher. (2) The liquid sampler includes a wall surface that protrudes outward over the entire circumference from the outer peripheral surface of the outer cylinder at a height where the lower end of the liquid inlet is located, and is further bent upward. 2. The liquid sampler according to claim 1, further comprising a funnel-shaped liquid receiving portion surrounding the entire circumference of the outer cylinder at the liquid inlet portion. (3) Above the position where the liquid inlet is provided, the internal space of the outer cylinder protrudes outward in the axial direction and is not blocked by the pressing part of the pusher. The liquid sampler according to claim 1, which has a slit-like groove. (4) A urine collection device having the configuration according to any one of claims 1 to 3.