JPH04361122A - Inspecting apparatus of urine - Google Patents

Abstract

PURPOSE:To measure the specific gravity of urine and the quantity thereof without being subjected to an adverse effect of an educed substance from the urine. CONSTITUTION:A specific gravity measuring pipe 14 having a prescribed height and a urine quantity measuring pipe 22 into which urine running over the pipe 14 flows are made to communicate with each other in the lower end parts through the intermediary of a first valve 26. In the lower end part of the specific gravity measuring pipe 14, an air collecting pipe 16 which is made to communicate with a temperature sensor 19 at one end and provided with a pressure sensor 18 at the other end located above the position of this communication is provided. The pressure of the urine made to flow to a prescribed height in the specific gravity measuring pipe 14 is measured by the pressure sensor 18 through the intermediary of the air staying in the air collecting pipe 16, and the specific gravity of the urine is computed from measured values of the pressure sensor and the temperature sensor by a central computing device. The first valve 26 being opened thereafter, the pressure of the urine is measured by the pressure sensor 18, and the quantity of the urine is computed by the central computing device from the value obtained by this measurement, the specific gravity computed and the volumes corresponding to the heights of the two pipes 14 and 22.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a urine testing device for automatically testing the specific gravity, etc. of urine collected from a patient in a hospital or the like.

0002

2. Description of the Related Art In hospitals and the like, urine excreted by a patient is tested as one of the important clues for understanding changes in the patient's condition. Urine collected by these patients themselves or by nurses is tested for urine specific gravity and urine volume each time, and the total daily urine volume is also tested.

0003

[Problem to be Solved by the Invention] In order to test these urines, conventionally, a shelf is provided in a hospital toilet to store collected urine in urinals, etc. Hospital staff tested and recorded urine specific gravity and urine volume on a daily basis. Furthermore, large amounts of urine are stored for long periods of time, which is a major cause of bad odors and uncleanness. Therefore, it is desired to provide an apparatus that can automatically test the urine specific gravity and urine volume of collected urine without manual intervention, and that does not require storing the urine after the test. It seems that various such devices have been prototyped, but they can be used to detect inorganic components contained in urine, such as uric acid, uric acid salts, calcium oxalate, phosphate, calcium phosphate, ammonium/magnesium phosphate, ammonium urate, calcium carbonate, etc. It is easy to deposit, and this precipitate adheres to the inspection part of the device and immediately deteriorates the detection accuracy, so it cannot be put to practical use sufficiently and has not been put into practical use at present.

The present invention was made in view of the above-mentioned circumstances, and it is an object of the present invention to provide a urinalysis test device that has excellent durability and whose test accuracy is not adversely affected by the adhesion of precipitates from urine. purpose.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the urine testing device of the present invention includes a specific gravity measuring pipe having a small diameter and a predetermined height, and one end attached to the lower end of the specific gravity measuring pipe. An air reservoir pipe is connected so that the other end is above the communication position, and a predetermined amount of air is provided to the specific gravity measuring pipe via the air that is disposed at the other end of the air reservoir pipe and stagnates in this pipe. a pressure sensor that measures the pressure caused by the urine flowing into the specific gravity measurement pipe; a temperature sensor that measures the temperature of the urine flowing into the specific gravity measuring pipe; and a specific gravity of the urine that is calculated from the measured values of the pressure sensor and the temperature sensor. It is configured with a central processing unit.

[0006] A guide may be provided so that the urine flows obliquely downward toward the inner wall of the upper end opening of the specific gravity measuring pipe. Furthermore, the guide may be arranged so that its tip is laterally shifted from above the specific gravity measuring pipe.

Furthermore, a step may be formed by partially cutting out the upper end opening of the specific gravity measuring pipe by making an axial cut and a cut orthogonal thereto. Then, the edge formed by the cut orthogonal to the axial direction of the step may be obliquely cut out on the outside, leaving the inner peripheral portion, to form a chevron-shaped cross section.

[0008] Also, there is provided a urine volume measuring pipe, an air reservoir pipe arranged such that one end communicates with the lower end of the urine volume measuring pipe and the other end is above the communicating position, and this air reservoir pipe. a pressure sensor disposed at the other end to measure the pressure of urine flowing into the urine volume measuring pipe via the air retained in the pipe; and a temperature of the urine flowing into the urine volume measuring pipe. It may also be configured to include a temperature sensor that measures the temperature, and a central processing unit that calculates the urine volume based on the measured values of the pressure sensor and temperature sensor and the volume that corresponds to the height of the urine volume measuring pipe. Furthermore, a cone that becomes thicker toward the bottom may be arranged inside the urine volume measurement pipe.

[0009] Furthermore, a pipe for measuring the amount of urine is provided, through which the urine overflowing from the pipe for measuring specific gravity flows and communicates with the pipe through a first valve at its lower end, and the first valve is opened to allow the urine to flow through the pipe for measuring specific gravity. The pressure due to the urine is measured by the pressure sensor, assuming that the water level of the urine in the pipe and the urine volume measuring pipe are the same, and this measured value, the calculated specific gravity, and the height of the specific gravity measuring pipe and the urine volume measuring pipe are used. It is also possible to configure the central processing unit to calculate the amount of urine based on the volume depending on the amount of urine.

[0010] Also, a sealless centrifugal pump is connected to the lower end of the specific gravity measuring pipe or the urine volume measuring pipe through a second valve, and when the second valve is opened, the sealless centrifugal pump is started. At the same time, the pump may be configured to force water into the pump for a short period of time to activate the pump function, thereby draining the urine in the specific gravity measuring pipe or the urine volume measuring pipe.

[0011] Also, an injection nozzle is provided at the upper end of the urine volume measurement pipe, and the radial direction of the injection nozzle is set so as to generate a spiral water flow along the inner wall of the urine volume measurement pipe. You can also do it.

0012

[Operation] The pressure due to urine flowing into the specific gravity measurement pipe at a predetermined height is measured, and the specific gravity of the urine is calculated from this pressure measurement value, so even if deposits adhere to the inner wall of the pipe, it will have an adverse effect on the pressure measurement value. It is possible to test urine specific gravity with high accuracy. Also,
Since the pressure from the urine is transmitted to the pressure sensor through air, the detection part of the pressure sensor is not directly wetted by urine and is free from deposits, allowing highly accurate measurements to be made.

[0013] If the urine is allowed to flow diagonally downward with a guide toward the inner wall of the upper end opening of the specific gravity measuring pipe, the urine will flow down along the inner wall, and the air and bubbles in the pipe will be easily removed from the urine. can be displaced and quickly fill the pipe with urine. Furthermore, if the tip of the guide is arranged to be laterally offset from above the specific gravity measuring pipe, drops from the guide will not fall onto the specific gravity measuring pipe.

Furthermore, if the upper end opening of the specific gravity measuring pipe is partially cut out to form a step, the diameter of the convex hemisphere of urine that is likely to be formed at the upper end of the specific gravity measuring pipe due to surface tension can be reduced. obtain. If the edge formed by the notch perpendicular to the axial direction of the step is formed into a chevron-shaped cross section, leaving the inner periphery, the diameter of the convex hemisphere of urine due to surface tension can be calculated by the thickness of the pipe for measuring specific gravity. can be suppressed to a smaller value.

[0015] Furthermore, since the pressure caused by the urine flowing into the urine volume measuring pipe is transmitted to the pressure sensor via air,
The pressure corresponding to the height of the urine can be measured with high precision, and the urine volume can be tested with high precision based on this pressure measurement value and the volume corresponding to the height of the urine volume measuring pipe. Moreover, the detection part of the pressure sensor is not directly wetted by urine, and no deposits are attached to it. Furthermore, if a cone that becomes thicker at the bottom is placed inside the urine volume measurement pipe, the gap between the urine volume measurement pipe and the cone will become smaller at the bottom. A small change in urine volume appears as a large change in height, making it possible to accurately test the urine volume of a small amount of urine.

In addition, if the urine overflowing from the specific gravity measuring pipe is allowed to flow into the urine volume measuring pipe and the lower ends of both pipes are communicated via the first valve, the specific gravity can be measured by opening the first valve. By setting the water levels of the urine in the measuring pipe and the urine volume measuring pipe to be the same and measuring the pressure caused by the urine with a pressure sensor, the urine volume can be tested following the urine specific gravity test.

In addition, when starting a sealless centrifugal pump, water is forced into the pump to replace the air inside the pump with water to activate the pump function, and if this pump discharges urine, the pump Since the gap between the impeller and the case is large, it is less susceptible to the adhesion of precipitates from urine. Furthermore, the inside is cleaned by the water that is injected during startup, making it more difficult for deposits to adhere.

Furthermore, if the inner wall of the urine volume measuring pipe is washed with a spiral stream of water, deposits will not adhere to the inner wall of the pipe.

[0019]

[Example] The following is an example of the present invention shown in FIGS. 1 to 5.
Explain with reference to. FIG. 1 is a system diagram of one embodiment of the urine test device of the present invention, FIG. 2 is a detailed diagram showing the structure of the pressure sensor and air reservoir pipe of FIG. 1, and FIG. FIG. 4 is a detailed diagram showing the structure of the upper end of the pipe for measuring specific gravity; FIG. 4 is an electrical block circuit diagram of the device shown in FIG. 1; and FIG. 5 explains a series of operations of the urine testing device shown in FIG. This is a flowchart for

In FIGS. 1 to 4, the urine input receptacle 10
The urine put in is guided to the guide 12 connected to the lowest part, and the urine is guided to a guide 12 with a small diameter and a predetermined height A (for example, an inner diameter of 10 mm and a height of 6 mm).
00 mm) into the specific gravity measuring pipe 14 from the upper end opening. A temperature sensor 19 is provided at the lower end of this specific gravity measuring pipe 14, and one end of the air reservoir pipe 16 is communicated therewith. The other end of this air reservoir pipe 16 is located at a height above the communication position, and a pressure sensor 18 is provided at the other end. Urine overflowing from the specific gravity measurement pipe 14 is transferred to a pipe with a large diameter (for example, 80 mm inner diameter) through a communication pipe 20.
The urine flows into the urine volume measurement pipe 22 from its upper end. Inside this urine volume measuring pipe 22, a conical body 24 is disposed coaxially with the cone body 24 increasing in diameter toward the bottom. The lower ends of the urine volume measuring pipe 22 and the specific gravity measuring pipe 14 are
They are communicated via a communication pipe 28 via a first valve 26 . Further, the lower end of the urine volume measuring pipe 22 is connected to a second valve 3.
0 to a sealless centrifugal pump 32 through a communication pipe 34. This sealless centrifugal pump 32 is connected to a suitable outlet (not shown) via a communication pipe 36 and to a water pipe via a communication pipe 40 via a third valve 38 . The lower end of the specific gravity measuring pipe 14 is connected to a fourth valve 4.
2 through a communication tube 44 to a suction pump 46, and the aspirated urine flows into a sample collection bag 50 through a communication tube 48. Further, a water pipe is connected to a water spout 56 provided above the urine input receiver 10 through a communication pipe 54 via a fifth valve 52 and an injection nozzle 58 provided at the upper end of the urine amount measuring pipe 22. connected to. The tap water is emitted diagonally downward from the injection nozzle 58 toward the inner wall of the urine volume measuring pipe 22, forming a spiral water flow along the inner wall.

Further, the upper end opening of the specific gravity measuring pipe 14 has a semicircular portion cut out by a cut in the axial direction passing through the shaft and a cut in the direction perpendicular to this, resulting in a step 1.
4a is formed, and an edge 14b formed by a cut perpendicular to the axial direction of the step 14a is obliquely cut out on the outside leaving the inner peripheral part, forming a chevron-shaped cross section. The guide 12 also includes a step 14a of the specific gravity measuring pipe 14.
It is arranged so that urine flows diagonally downward toward the inner wall of the raised part. Furthermore, guide 12
The tip portion 12a of is disposed so as to be laterally shifted from the position above the specific gravity measuring pipe 14. In addition, in Figure 3, 60
6 is a container for guiding the urine overflowing from the specific gravity measuring pipe 14 to the communication pipe 20, and 62 is an air vent for communicating the inside of the container 60 with outside air.

The measured values of pressure sensor 18 and temperature sensor 19 are then provided to central processing unit 70 . Connected to this central processing unit 70 are an input means 72 for inputting the name of the patient whose urine was collected, and a storage means 74 for storing the urine specific gravity and urine volume in correspondence with the patient's name. be done. Further, a sealless centrifugal pump 32 controlled by a central processing unit 70, a suction pump 46, and first to fifth valves 26, 30, 38, 42, and 52 are connected.

In this configuration, the urine specific gravity test will be explained first. The urine input into the urine input receptacle 10 passes through the guide 12 and flows into the specific gravity measuring pipe 14 in an obliquely downward flow (■ in FIG. 3). Then, the urine falls along one inner wall of the specific gravity measurement pipe 14 (■ in Fig. 3), so the air and bubbles 80 in the pipe tend to rise along the opposite inner wall, and the air is easily removed. and bubbles 8
0 and urine are quickly replaced, and the pipe can be filled with urine alone within a short period of time. Here, the other end of the air reservoir pipe 16 that communicates with the lower end of the specific gravity measurement pipe 14 is closed by a pressure sensor 18, and air 82 is trapped within the air reservoir pipe 16, and the air is transmitted through the air 82. The pressure of urine within the specific gravity measuring pipe 14 is transmitted to the pressure sensor 18. Note that the specific gravity measuring pipe 14 has an inner diameter of 1, for example.
It is 0 mm thin and 600 mm high, and can be filled with a small amount of urine, about 47 cc. When the pipe is full of urine, the upper end of the specific gravity measuring pipe 14 will have a step 14.
a and the chevron-shaped cross-sectional edge 14b, the convex hemisphere of urine caused by surface tension is small. As a result, the height position of the upper end of the urine in the specific gravity measuring pipe 14 is almost always constant, almost unaffected by surface tension. Therefore, the reproducibility of the measured values measured by the pressure sensor 18 is excellent,
Measurements can be made with high accuracy. Moreover, after most of the urine has been flushed away, urine drops fall from the tip 12a of the guide 12 in a downward flow (■ in FIG. 3), but these drops do not fall onto the specific gravity measuring pipe 14. , without affecting pressure measurements. The central processing unit 70 calculates the urine specific gravity from the pressure measurement value measured from the urine at a predetermined height and the urine temperature measurement value obtained by the temperature sensor 19, and stores it in the storage means 74 as appropriate. This urine specific gravity is stored in correspondence with the patient's name.

Next, the measurement of urine volume will be explained. Urine overflowing from the specific gravity measurement pipe 14 flows into the urine volume measurement pipe 22 via the communication pipe 20. All the urine in the urine input receiver 10 is transferred to the specific gravity measuring pipe 14 or the urine volume measuring pipe 22.
When the first valve 26 is opened after the flow into the communication pipe 2
8, the urine in both pipes 14, 22 is at the same height. Therefore, the pressure caused by urine at this height is measured by the pressure sensor 1.
Measure at 8. The central processing unit 70 calculates the urine volume from this pressure measurement value, the already calculated urine specific gravity, and the predetermined volumes of the specific gravity measuring pipe 14 and the urine volume measuring pipe 22 according to the height of the urine. calculate. The urine volume calculated by the calculation is then associated with the patient's name in the storage means 7.
4 to be memorized. Here, inside the urine volume measurement pipe 22,
Since the cone 24 is arranged, the change in height in response to a change in volume at the lower end of the urine volume measuring pipe 22 is large, and even a slight change in the amount of urine can reliably detect a change in the height of the urine. It will be done. Therefore, the pressure caused by a small amount of urine can be measured with high sensitivity, and the urine volume can be measured with high accuracy. A large amount of urine can be accommodated in the large volume of the upper end of the urine volume measurement pipe 22, and the urine volume can be measured with high accuracy from a large amount of urine to a small amount of urine.

Next, referring to FIG. 5, a series of operations of this apparatus including the urine specific gravity measurement and urine volume measurement will be explained. As an initial setting, the first to fifth valves 26, 3
0, 38, 42, and 52 are all closed. It is assumed that the patient's name and the like are input in advance from the input means 72 before urine is input.

First, urine is poured into the urine receiving tray 10 (
Step 1) When the urine flows into the specific gravity measurement pipe 14 and reaches a predetermined height as it overflows, the pressure and temperature are measured by the pressure sensor 18 and temperature sensor 19 (
Step 2). From this pressure measurement value and temperature measurement value, the central processing unit 70 calculates the urine specific gravity, and stores this in the storage means 74 in correspondence with the patient's name (step 3). Note that the urine overflowing from the specific gravity measuring pipe 14 flows into the urine amount measuring pipe 22.

Next, the first valve 26 is opened (step 4), and the specific gravity measuring pipe 14 and the urine volume measuring pipe 22 are opened.
The urine in the container is set at the same height, and the pressure due to the urine at the same height is measured by the pressure sensor 18 (step 5). central processing unit 7
0 calculates the urine height from this pressure measurement value and the already calculated urine specific gravity, further calculates the urine volume from this height, and stores this in correspondence with the patient's name (step 6).
. After the urine specific gravity and urine volume are calculated in this way, if necessary, the fourth valve 42 is opened and the suction pump 46 is started to pump a predetermined amount (for example, 4 cc) of urine into a sample collection bag. 50 and stored, it may be used as data for other detailed inspections.

When the urine specific gravity and volume test is completed, the second valve 30 is opened, and the third valve 38 is opened.
Open the pump to pressurize tap water into the sealless centrifugal pump 32, and then start the pump 32 (step 7).
. Then, when the air in the sealless centrifugal pump 32 is replaced with tap water and the pump functions as a pump, the third valve 38 is closed to stop the pressurization of tap water (step 8). Furthermore, the sealless centrifugal pump 32 continues to operate, and urine is discharged from the urine volume measurement pipe 22 and the like (step 9). Once the urine has been discharged, the operation of the sealless centrifugal pump 32 is stopped and the second valve 30 is closed (step 10). Next, open the fifth valve 52 and pour tap water from the water spout 56 into the urine receiving container 1.
Spray water on the water to clean it, and then install the specific gravity measuring pipe 1.
Fill 4 with tap water. At the same time, tap water flows down the inner wall of the urine volume measurement pipe 22 from the injection nozzle 58 in a spiral manner to clean it (step 11). Pressure sensor 18
detects a predetermined pressure, or the fifth valve 5
When a predetermined amount of time has elapsed since the specific gravity measuring pipe 14 and the urine volume measuring pipe 22 are filled with a predetermined amount of tap water (step 12), the fifth valve 52 is closed and the second valve 52 is opened. Then, the third valves 30 and 38 are opened, and the sealless centrifugal pump 32 is started (step 13). Then, when the sealless centrifugal pump 32 comes to function as a pump, the third valve 38 is closed (step 14). The sealless centrifugal pump 32 continues to operate, and tap water is discharged from the urine volume measurement pipe 22 and the like (step 15). When the specific gravity measuring pipe 14 and the urine volume measuring pipe 22 are washed with tap water from Step 10 to Step 15 repeatedly for a predetermined number of times (Step 16), the first and second valves 26, 30 is closed, and the sealless centrifugal pump 32 is stopped (step 17), thereby ending the operation. Of course, these operations are programmed in the central processing unit 70 in advance.

In the above embodiment, the higher the predetermined height A of the specific gravity measuring pipe 14, the more accurate the specific gravity can be measured. There are restrictions because a large amount of urine is required to fill the height A. Therefore, in order to reduce the amount of urine required to measure urine specific gravity, it is conceivable to make the inner diameter of the specific gravity measuring pipe 14 smaller.
If it is too thin, it will be difficult for the air and bubbles 80 in the pipe to escape, making it difficult to quickly fill the specific gravity measuring pipe 14 with urine alone. According to the inventor's experiments, it has been found that if the inner diameter of the specific gravity measuring pipe 14 is 8 mm or more, the air bubbles 80 and the like can be easily removed.

Further, in the above embodiment, tap water is used for cleaning, but cleaning may be performed using an appropriate detergent and finally rinsing with tap water. Although round pipes are used for the specific gravity measuring pipe 14 and the urine volume measuring pipe 22 for ease of cleaning, square pipes may be used as long as they can be appropriately cleaned. Furthermore, specific gravity measurement pipe 1
4 does not have to be arranged vertically, and may be arranged obliquely or curved as long as the predetermined height A can be obtained. In the above embodiment, the conical body 24 is arranged inside the cylindrical urine volume measuring pipe 22, but the conical body 24 is omitted and the urine volume measuring pipe 22 itself has a tapered shape whose diameter becomes smaller toward the lower part. A shaped pipe may be used, or a pipe with only the lower end tapered may be used.

[0031]

Effects of the Invention Since the urine testing apparatus of the present invention is constructed as described above, it provides the following special effects.

[0032] Since the urine specific gravity is calculated from the pressure of urine at a predetermined height that flows into the specific gravity measurement pipe, even if precipitates from urine adhere to the inner wall of the pipe, there is no change in the measured pressure value. Moreover, since the pressure sensor is not wetted by the pressure of urine through the air, no deposits adhere to the detection part, and measurements can always be made with high accuracy. therefore,
The urine test device of the present invention is extremely durable and can be put to practical use.

If the urine is allowed to flow down along the inner wall of the pipe for measuring specific gravity, the air and bubbles in the pipe can be easily replaced by the urine, and the pipe can be quickly filled with urine alone. Therefore, the urine specific gravity test can be performed quickly and reliably. Furthermore, since the urine can be quickly replaced with air and bubbles, the inner diameter of the pipe for measuring specific gravity can be made thinner, and the urine specific gravity can be tested with a correspondingly small amount of urine. Furthermore, if urine droplets are prevented from falling from the tip of the guide into the specific gravity measurement pipe, the pressure measurement value measured by the pressure sensor will not fluctuate due to falling urine drops, and the accuracy will be improved. Urine specific gravity can be tested.

Furthermore, if a step is formed at the upper end opening of the pipe for measuring specific gravity, the diameter of the convex hemisphere of urine that is likely to occur due to surface tension can be suppressed, and the shape of the hemisphere of urine due to surface tension can be reduced accordingly. The fluctuation range of the measured pressure becomes smaller. Furthermore, if the edge formed at the step is formed into a chevron-shaped cross section, leaving the inner periphery, the diameter of the convex hemisphere of urine due to surface tension can be suppressed to a size smaller than the thickness of the pipe, and the width of pressure fluctuation can be made even smaller.

[0035] Furthermore, if the urine volume is calculated by measuring the pressure of urine flowing into the urine volume measurement pipe via air with a pressure sensor, the detection part of the pressure sensor will not be directly wetted by urine. Therefore, there is no deposition of precipitates from urine, and the pressure corresponding to the height of the urine can be measured with high accuracy, and the urine volume can be accurately tested from this pressure measurement value and the volume corresponding to the height of the pipe. Since no precipitates adhere to the detection part of the pressure sensor, it has excellent durability and can accurately test urine volume for a long time. Furthermore, inside the pipe for measuring urine volume,
By arranging a cone that becomes thicker toward the bottom, a slight change in urine volume will appear as a large change in height toward the bottom, making it possible to accurately test the amount of urine in small amounts. Since the upper part has a large volume, a large amount of urine can be stored in the urine volume measurement pipe, and the urine volume can be accurately tested from a small amount to a large amount of urine.

Furthermore, if the urine overflowing from the specific gravity measuring pipe is made to flow into the urine volume measuring pipe and the lower ends of both pipes are communicated through the first valve, the first valve is closed after measuring the urine specific gravity. If the pressure caused by urine is measured by opening the device and the urine volume is calculated from this pressure measurement, the urine volume can be tested following the urine specific gravity test.

Furthermore, if a sealless centrifugal pump is used to discharge urine, the gap between the impeller and the case of the pump is large, so even if deposits adhere to the pump, the function of the pump will not be impaired. Then, when starting the pump, tap water is pressurized to replace the air inside the pump with water to activate the pump function, so the tap water cleans the inside, making it difficult for deposits to adhere. Therefore, the pump has excellent durability, and the entire device has excellent durability.

[0038] Furthermore, if the pipe for measuring urine volume is cleaned with a stream of water flowing down in a spiral along the inner wall, there will be no deposits on the pipe for measuring urine volume, and the urine volume can be measured with high precision forever. can be inspected.

[Brief explanation of drawings]

FIG. 1 is a system diagram of one embodiment of the urine test device of the present invention.

FIG. 2 is a detailed diagram showing the structure of the pressure sensor and air reservoir pipe in FIG. 1;

FIG. 3 is a detailed view showing the structure of the upper end of the specific gravity measuring pipe in FIG. 1;

FIG. 4 is an electrical block circuit diagram of the urine test apparatus shown in FIG. 1.

FIG. 5 is a flowchart for explaining a series of operations of the urine test apparatus shown in FIG. 1;

[Explanation of symbols]

12 Guide 14 Pipe for measuring specific gravity 14a Step 14b Edge 16 Air reservoir pipe 18 Pressure sensor 19 Temperature sensor 22 Pipe for measuring urine volume 24 Cone 26 First valve 30 Second valve 32 Sealless centrifugal pump 38 Third valve 58 Injection nozzle

Claims (10)

[Claims] Claim 1: A pipe for measuring specific gravity having a small diameter and a predetermined height, and a pipe for collecting air arranged such that one end communicates with the lower end of the specific gravity measuring pipe and the other end is located above the communicating position. , a pressure sensor disposed at the other end of the air reservoir pipe to measure the pressure caused by urine flowing into the specific gravity measuring pipe to a predetermined height via the air retained in the pipe; and the specific gravity measuring pipe. a temperature sensor that measures the temperature of the urine flowing into the system; a central processing unit that calculates the specific gravity of the urine from the measured values of the pressure sensor and the temperature sensor;
A urine test device comprising: 2. The urine test device according to claim 1,
A urine test device characterized in that a guide is provided so that urine flows obliquely downward toward the inner wall of the upper end opening of the specific gravity measuring pipe. 3. The urine test device according to claim 2,
A urine testing device characterized in that the guide is arranged so that its tip is laterally shifted from above the specific gravity measuring pipe. 4. The urine testing device according to claim 1, wherein the upper end opening of the specific gravity measuring pipe is partially cut out by an axial cut and a cut perpendicular to the cut to form a step. A urine testing device characterized by: 5. The urine test device according to claim 4,
A urine testing device characterized in that the edge formed by the notch perpendicular to the axial direction of the step is obliquely cut out on the outside leaving an inner peripheral portion to form a chevron-shaped cross section. 6. A urine volume measuring pipe, an air reservoir pipe arranged such that one end communicates with the lower end of the urine volume measuring pipe and the other end is above the communicating position, and the air reservoir pipe. a pressure sensor disposed at the other end to measure the pressure of urine flowing into the urine volume measuring pipe via the air retained in the pipe; and a temperature of the urine flowing into the urine volume measuring pipe. and a central processing unit that calculates the urine volume based on the measured values of the pressure sensor and the temperature sensor and the volume corresponding to the height of the urine volume measuring pipe. Urine testing device. 7. The urine test device according to claim 6,
A urine testing device characterized in that a cone that becomes thicker toward the bottom is disposed within the urine volume measurement pipe. 8. The urine testing device according to claim 1,
A urine volume measurement pipe is provided, through which the urine overflowing from the specific gravity measurement pipe flows and communicates with the urine volume measurement pipe at its lower end via a first valve, and the urine volume is measured with the specific gravity measurement pipe by opening the first valve. The pressure due to urine is measured by the pressure sensor, assuming that the water level of urine in the urine pipe is the same, and the volume is determined based on this measured value, the calculated specific gravity, and the height of the specific gravity measuring pipe and the urine volume measuring pipe. A urine test apparatus characterized in that the central processing unit is configured to calculate the amount of urine. 9. The urine testing apparatus according to claim 1, wherein a sealless centrifugal pump is connected to the lower end of the specific gravity measuring pipe or the urine volume measuring pipe via a second valve, and the At the same time as opening the second valve, the sealless centrifugal pump is started and water is forced into the pump for a short period of time to activate the pump function, thereby removing the urine in the specific gravity measuring pipe or the urine volume measuring pipe. A urine test device characterized in that it is configured to discharge. 10. The urine test device according to claim 6, wherein an injection nozzle is provided at an upper end of the urine volume measurement pipe, and the radial direction of the injection nozzle is aligned with the urine volume measurement pipe. A urine test device characterized by being set to generate a spiral water flow along an inner wall.