JP2002005928A - Urine examination device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To notify a subject of a measurement result and tendency of the change by a display having a simple formation, in a urine examination device for measuring the concentration of a specific component included in urine automatically in urination on a stool. SOLUTION: A signal processing means 10 operates the concentration of the specific component included in urine based on an output signal of a sensor 1, and a memory means 11 memorizes the operation result together with the measuring order. A regression line inclination operation means 13 operates the inclination of a regression line of the urine component concentration to the measuring order memorized in the memory means, and a correlation coefficient operation means 14 operates the correlation coefficient between the measuring order and the urine component concentration, and a tendency determination means 12 determines whether the urine component concentration has an increasing tendency, a decreasing tendency or a stabilizing tendency based on the inclination and the correlation coefficient. Since a display means 7 displays the concentration and a determination result by the tendency determination means 12, the display having a simple formation can notify the subject of the measurement result and the tendency of the change.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a urine testing apparatus for testing urine discharged from a person into a toilet, and more particularly to a method for measuring the concentration of a specific component contained in urine, processing the measured data, and displaying the processed data. It is about.

[0002]

2. Description of the Related Art Urine is an important source of information on the health of individuals, and various functional disorders can be examined by quantitative analysis of urine components. Therefore, when an individual urinates on a daily basis, proposals have been made to add a function of analyzing urine components to a toilet at home or at work so that a functional disorder can be detected early by analyzing the urine. .

[0003] For example, JP-A-60-85133,
JP-A-7-198677, JP-A-10-1705
In U.S. Patent No. 12 and the like, there is proposed a urinalysis apparatus which drives a sensor to expose the urine in a toilet, receives urine discharged from an individual, performs electrical signal processing, and reports the concentration of a specific component contained in the urine. .

[0004] For health management, as well as the concentration of a specific component contained in urine, the tendency of change in the concentration is also important information. For example, in the case of sugar concentration in urine, 100 mg / d
l or less, positive if 150 mg / dl or more, 1
The range of 00 to 150 mg / dl is judged as false positive, but the sugar concentrations a and b measured as shown in FIG. The judgment changes depending on the density a measured in an upward trend like the densities a and B.

[0005] In other words, even at the same concentration, it can be estimated that in the case of a, the person becomes negative by continuing his / her lifestyle, but in the case of b, the person becomes positive without improving his / her lifestyle. Is assumed. As described above, for health management, the concentration of a specific component contained in urine and its tendency to change are important information, and it is a function required of a urine test apparatus to notify the subject of both.

For this purpose, for example, Japanese Patent Application Laid-Open No. 10-1705
In the urine test apparatus disclosed in Japanese Patent Application Laid-Open No. 12-212, a configuration for displaying a graph has been proposed. Also, JP-A-11-326
Japanese Patent Publication No. 317 proposes a method of transmitting data from a unit mounted on a toilet provided with a sensor, analyzing the data in another unit, and displaying or printing a tendency.

[0007]

However, each of the above-mentioned conventional urinalysis devices has a problem. JP-A-10-1
In the case of the configuration disclosed in Japanese Patent Publication No. 70512, the display needs to have a certain size in order to read the trend using a graph. In general, the toilet space in the home is never large, and there is no large area around the toilet. Therefore, it is difficult to provide a urinalysis device of a type mounted on a toilet with a large display.

[0008] Even in the case of the configuration disclosed in Japanese Patent Application Laid-Open No. H11-326317, if another unit is provided in the toilet space, the same problem as described above occurs. You can't be too big.

If another unit is provided outside the toilet space, for example, in a living room, the problem of size can be solved, and it is possible to notify the subject of the tendency by displaying or printing a graph. . However, the measurement result and the tendency cannot be notified to the subject immediately after urination, and the subject cannot know the tendency without moving to the installation location of another unit after urinating, which is not convenient.

The present invention solves the above problems, that is,
In a urine test apparatus for automatically measuring the concentration of a specific component contained in urine when urinating with a toilet, an object of the present invention is to inform a subject of a measurement result and a tendency of change with a display having a simple configuration.

[0011]

In order to solve the above-mentioned problems, the present invention provides a sensor for generating an output signal correlated with the concentration of a specific component contained in urine, and a specific signal based on the signal from the sensor. Signal processing means for calculating the urine component concentration,
Storage means for storing the urine component concentration, which is the calculation result of the signal processing means, together with the measurement order; and determining whether the tendency of the change in the urine component concentration is increasing, decreasing, or stable based on the stored value of the storage means. And a display means for displaying the urine component concentration calculated by the signal processing means and the determination result determined by the tendency determination means, wherein the tendency determination means is stored in the storage means. Regression line slope calculating means for calculating the slope of the regression line to the urine component concentration measurement order; and correlation coefficient calculating means for calculating the correlation coefficient between the measurement order and urine component concentration stored in the storage means. Have
The tendency of the change in the urine component concentration is determined based on the slope calculated by the regression line slope calculating means and the correlation coefficient calculated by the correlation coefficient calculating means.

According to the above invention, the signal processing means calculates the concentration of a specific component contained in urine based on the output signal of the sensor, and the storage means stores the calculated result of the urine component concentration together with the measurement order. . Then, the regression line slope calculation means calculates the slope of the regression line to the measurement order of the urine component concentration stored in the storage means, and the correlation coefficient calculation means calculates the correlation coefficient between the measurement order and the urine component concentration. . Then, the tendency determining means determines whether the tendency of the change in the urine component concentration is increasing, decreasing, or stable based on the slope and the correlation coefficient, and the display means displays the concentration and the determination result by the tendency determining means. Therefore, the subject can be notified of the measurement result and the tendency of the change by a display device having a simple configuration.

[0013]

DETAILED DESCRIPTION OF THE INVENTION A urine test apparatus according to a first aspect of the present invention includes a sensor for generating an output signal correlated with the concentration of a specific component contained in urine, and a specific signal based on the sensor signal. Signal processing means for calculating the urine component concentration; storage means for storing the urine component concentration, which is the calculation result of the signal processing means, together with the measurement order; and a tendency of change in the urine component concentration based on the stored value of the storage means. Having a tendency determining means for determining whether the tendency is ascending, descending or stable, and display means for displaying the urine component concentration calculated by the signal processing means and the determination result determined by the tendency determining means, The tendency determining means is a regression line slope calculating means for calculating a slope of a regression line to the measurement order of the urine component concentration stored in the storage means; Perform correlation coefficient And determining a tendency of a change in urine component concentration based on the slope calculated by the regression line slope calculating means and the correlation coefficient calculated by the correlation coefficient calculating means. .

The signal processing means calculates the concentration of a specific component contained in urine based on the output signal of the sensor, and the storage means stores the result of the calculation together with the urine component concentration as a measurement order. Then, the regression line slope calculation means calculates the slope of the regression line to the measurement order of the urine component concentration stored in the storage means, and the correlation coefficient calculation means calculates the correlation coefficient between the measurement order and the urine component concentration. . Then, the tendency determining means determines whether the tendency of the change in the urine component concentration is increasing, decreasing, or stable based on the slope and the correlation coefficient, and the display means displays the concentration and the determination result by the tendency determining means. Therefore, the subject can be notified of the measurement result and the tendency of the change by a display device having a simple configuration.

[0015] The urine test apparatus according to claim 2 of the present invention comprises:
A subject identification unit for identifying the subject, wherein the storage unit stores the subject information identified by the subject identification unit together with the urine component concentration and the measurement order, and the tendency determination unit includes the Only the memory value of the subject specified by the subject specifying means is extracted to determine the tendency of the change in the urine component concentration.

The storage means stores the specified subject information together with the urine component concentration and the measurement order, and the tendency determining means uses only the stored value of the subject specified by the subject specifying means among the stored values of the storage means. Since the extraction is performed and the tendency of the change in the urine component concentration is determined, the tendency of the change in the urine component concentration can be determined for each individual even when a plurality of persons use one urine test apparatus.

A urine test apparatus according to a third aspect of the present invention comprises:
It has a case attached to a toilet bowl, and the case is provided with a sensor, signal processing means, storage means, tendency judgment means, and display means.

Since the case attached to the toilet is provided with a sensor, signal processing means, storage means, tendency judgment means and display means, the display can be seen near the toilet and the subject can measure immediately after urination. You can see the results and the trends.

The case of the urine test apparatus according to claim 4 of the present invention includes a sensor driving means for moving a sensor, and a storage solution container for storing a storage solution to be brought into contact with the sensor during non-measurement. The sensor driving means moves the sensor into the toilet bowl during measurement and moves the sensor into the storage liquid container during non-measurement.

Since the sensor driving means for moving the sensor and the storage liquid container are provided inside the case, the sensor driving means moves the sensor into the toilet bowl at the time of measurement, and moves the sensor into the storage liquid container at the time of non-measurement. With a simple configuration, the concentration of a specific urine component can be automatically measured, and the sensor can be used repeatedly.

According to the sensor of the urine test apparatus according to claim 5 of the present invention, a hydrogen peroxide electrode is formed on an insulating substrate, and the hydrogen peroxide electrode is coated with a polymer film formed by coating and heating. This is a planar type enzyme sensor in which an immobilized enzyme film is provided in the form of a polymer film.

Since the polymer film on the hydrogen peroxide electrode is formed by coating and heating,
The permeability of the electrode interfering substances can be restricted while maintaining the permeability of hydrogen peroxide, and even if the sensor receives urine droplets of the urinator directly in the toilet bowl, it can measure with high reliability, simplifying the configuration. Things become possible.

[0023]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing the operation and display of the urine test apparatus according to the embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a planar enzyme sensor (hereinafter referred to as a sensor).
It outputs an electrical signal correlated with the sugar concentration as a specific component contained in urine. 2 is a sensor driving means for driving the sensor 1, and 3 is a control means for controlling the sensor driving means 2. Under the control of the control means 3, the sensor 1 is placed in the toilet bowl so that urination of the subject is applied to the sensor 1 during measurement. Move it, and when not measuring, move it so that it is stored in the storage solution container outside the toilet bowl.

Reference numeral 4 denotes an operation / display unit of the urine test apparatus according to the present embodiment, which is configured to include a subject specifying means 5, a measurement switch 6, and a display means 7.

The subject identification means 5 includes a subject selection switch 8
And a subject display 9. Each time the left switch of the subject selection switch 8 is pressed, the subject display 9 displays 3, 2,
Lights in the order of 1, 0. Each time the right switch of the subject selection switch 8 is pressed, the subject display 9 indicates 0, 1,
It lights up in order of 2,3. The numerical value corresponding to the lit location is the code of the subject. That is, when a plurality of subjects use the same urine test apparatus, the subject code is determined in advance by a numerical value of 0 to 3 for each subject to be used, and the subject displays the subject display 9 before starting the urine test. By operating the subject selection switch 8 while watching, the subject's own code is specified.

Then, the subject presses the measurement switch 6 to start a urine test. When the measurement switch 6 is pressed, the control means 3 controls the sensor driving means 2 so that the sensor 1 is exposed in the toilet bowl. Here, when the subject urinates and urine is applied to the sensor 1, the signal processing means 10 processes the electrical signal output thereof to calculate the sugar concentration contained in the subject's urine.
Reference numeral 11 denotes a storage unit, which sequentially stores the subject code specified by the subject specifying unit 5, the measurement order measured for each subject code, and the sugar concentration calculated by the signal processing unit 10, as shown in FIG. I do.

Numeral 12 denotes a tendency judging means for judging a tendency of a change in the sugar concentration. The tendency judging means extracts a measuring order having the subject code of the measured subject and the sugar concentration from the stored values stored in the storage means 9 from the past. . Here, the extracted measurement orders are 1, 2, 3,..., N−1, n, and the sugar concentrations corresponding to the respective measurement orders are G1, G2, G3,.
(N-1), Gn. Regression line slope calculating means 13
Is the slope K of the regression line representing the relationship between the measurement order and the sugar concentration.
Is determined by the least squares method. The least squares method is a method of calculating an equation of a straight line that minimizes the sum of squares of deviations for n values of G1 to Gn, and the slope K is calculated by the following equation.

[0028]

(Equation 1)

Further, the correlation coefficient calculating means 14 calculates a correlation coefficient R (-1 ≦ R ≦ 1) between the measurement order and the sugar concentration by the following equation.

[0030]

(Equation 2)

The tendency determining means 12 determines that the slope K calculated by the regression line slope calculating means 13 is a predetermined value (for example, 5 mg / d).
l) If the correlation coefficient R calculated by the correlation coefficient calculation means 14 is larger than a predetermined value (for example, 0.7), it is determined that there is a tendency to increase. Then, if the slope K is smaller than a predetermined value (for example, -5 mg / dl) and the correlation coefficient R is smaller than a predetermined value (for example, -0.7), it is determined that there is a downward tendency. The inclination K is within a predetermined range (for example, -5 to +
If it is within 5 mg / dl, or if the correlation coefficient R is within a predetermined range (for example, -0.7 to +0.7), it is determined that the tendency is stable.

FIG. 3 is a graph showing an example of the relationship between the measurement order and the sugar concentration. FIG. 3A shows that the slope K of the regression line calculated by the regression line slope calculating means 13 is 5 mg / dl.
Since the correlation coefficient R calculated by the correlation coefficient calculating means 14 is larger than 0.7, the tendency determining means 12 determines that the tendency is increasing. Since the slope K of the regression line is smaller than −5 mg / dl and the correlation coefficient R is smaller than −0.7, B is determined to be a downward trend by the trend determination unit 12. C is determined to be stable because the slope K is within the range of -5 to +5 mg / dl. And D has a slope K greater than 5 mg / dl, but a correlation coefficient R of -0.7 to
Within the range of +0.7, the sugar concentration fluctuates from measurement to measurement, and the correlation between the measurement order and the sugar concentration is poor. As in the case of D, when the correlation between the measurement order and the sugar concentration is poor and the tendency of the change in the sugar concentration is unclear, it is determined as a stable tendency, so that it is erroneously determined as a rising tendency or a falling tendency. Can be prevented.

In FIG. 1, the display means 7 is a numeric display 1
5 and a trend indicator 16 provided with indicators for ascending, stable, and descending. The number display 15 is a signal processing means 1
The sugar concentration of the latest measurement output from 0 is displayed. The trend display 16 displays the trend by lighting any of the ascending, stabilizing, and descending according to the output of the tendency determining means 12.

According to this configuration, the subject can know the latest measured sugar concentration and the tendency such as rising tendency, falling tendency or stable tendency, and more precisely pay attention to not only the latest sugar concentration but also the improvement of lifestyle. Can be determined.

FIG. 4 shows a configuration for automating the measurement, washing and storage, including a sensor driving means 2 and a control means 3 for exposing the sensor 1 in the toilet bowl at the time of measurement and for storing it in the storage liquid container at the time of non-measurement.

In FIG. 4, reference numeral 1 denotes a sensor, and reference numeral 17 denotes a sensor holding portion, which holds the sensor 1 with a hard material. The sensor 1 and the sensor holder 17 are connected to a rack 19 made of a soft material via a sensor arm 18 made of a soft material.
Connected to A pinion 20 is provided on the rack 19 so as to mesh with the rack 19, and the pinion 20 is rotated by a rotation shaft of the motor 2 serving as a sensor driving unit. Reference numeral 21 denotes a rack guide made of a hard material formed in a U-shaped cross section and provided so as to be in contact with the rack 19. When the motor 2 rotates in this configuration, the rack 19, the sensor arm 1
The sensor holding unit 17 and the sensor 1 move in the direction of arrow A in FIG. 22 is a pulley and the sensor arm 18
Are arranged so that they can move smoothly. Here, by using a generally known stepping motor as the motor 2, the moving direction and the moving amount can be appropriately controlled.

Reference numeral 23 denotes a guide switching means which moves in the direction of arrow B in FIG. The movement is performed by a solenoid, a motor, or the like (not shown). If the motor 2 is rotated clockwise while the guide switching means 23 is in the state shown in FIG. 1, the sensor 1 and the sensor arm 18 enter the urine test guide 24 from the guide switching means 23. Then, the sensor 1 and the sensor arm 18 guided by the urine test guide 24 are exposed into the toilet bowl, and the sensor 1 advances to the urine collection position. The guide switching means 23 is provided in FIG.
When the motor 2 is rotated to the left from the position shown in FIG.
Enters the storage guide 25 from the guide switching means 23. The storage guide 25 is for guiding the sensor 1 to the storage liquid, and the sensor 1 advances into the storage liquid through the opening 26 of the storage guide 25.

FIG. 5 is a side sectional view taken along a broken line C in FIG. The storage guide 25 curves downward and is connected to a storage liquid container 27 at an opening 26. That is, the sensor 1 and the sensor arm 18 are
When it comes out of the storage solution container 27, the sensor 1 can contact the storage solution 28 stored in the storage solution container 27. Storage liquid container 2
7 is provided with a screw portion 29 at a portion connected to the storage guide 25, and is easily detachable by a detachable member 30 having a corresponding screw portion. This is to facilitate replacement when the storage solution has deteriorated due to long-term storage.

In FIG. 4, reference numeral 31 denotes a cleaning nozzle, which is connected to a water supply through an electromagnetic valve 32. When the solenoid valve 32 is opened, tap water flows out of the washing nozzle 31.
Reference numeral 33 denotes a board for fixing the motor 2, the rack guide 21, the pulley 22, the guide switching means 23, the urine test guide 24, the storage guide 25, the storage liquid container 27, the washing nozzle 31, and the electromagnetic valve 32, and is made of sheet metal. . The board 33 is provided with two toilet mounting portions 34 and 35 by bending. The toilet mounting portions 34 and 35 are mounted and fixed on the rim of the toilet. The storage guide 25 is provided in a hole 36 formed by bending to form one toilet mounting portion 34, and the storage guide 2 curved downward is provided.
5 penetrates and connects the storage solution container 27. Therefore, the storage guide 25 can be bent downward, and the storage liquid container can have a sufficiently large capacity.

The other toilet mounting portion 3 of the substrate 33
The hole 37 for bending which constitutes 5 is an outlet for the cleaning pipe via the cleaning nozzle 31 and the electromagnetic valve 32 to be separated from the substrate 33 and connected to a water supply (not shown) at the cleaning pipe outlet.

The control means 3 controls the motor 2 serving as the sensor driving means, and also controls the driving of the guide switching means 23 and the electromagnetic valve 32.

FIG. 6 is a perspective view showing a state where the above-described components are put in a case and attached to a toilet. That is, 38
Denotes a case, components such as the motor 2, the storage liquid container 27, the substrate 33, the control means 3, the signal processing means 10, and the storage means 1.
1. An electric circuit provided with a tendency judging means 12 is housed, and an operation display section 4 including a display means 7 is provided on the upper surface. And it attaches to the rim side part of the toilet 39 by the toilet mounting parts 34 and 35. The figure shows a state where the toilet seat 40 is erected and a state where the sensor 1 is exposed inside the bowl of the toilet bowl 39.

In general, a man stands up and sets the toilet seat 40 to urinate. In this case, since the location of the sensor 1 and the urination curve can be visually recognized, it is easy to hit urine regardless of the location of the sensor 1. On the other hand, generally, a woman urinates in a seated position with the toilet seat 40 down. In this case, the location of the sensor 1 and the urination curve cannot be seen. Therefore, it is desirable to make the sensor 1 protrude in a place where urine naturally hits the sensor when a woman urinates in a sitting posture, and protrudes so as to be located slightly behind the center of the toilet.

As described above, the case 38 is hung on the toilet and the case 38 is fixed, and since various components are housed inside the case 38, it is generally used at home regardless of the shape of the toilet and the seat. Can be attached to the toilet. In addition, a display means is provided on the upper surface, and the sugar concentration measured by the display means and the tendency of ascending tendency, descending tendency or stable tendency are displayed, so that it does not take up a space larger than the case and has a limited area Can be stored in

The structure of the planar enzyme sensor 1 will be described with reference to the sectional view of FIG. This is disclosed in JP-A-09-30433.
No. 0, a polyimide film (PI film) 41, a pair of metal electrodes 42 as hydrogen peroxide electrodes, and a polymer film 43 having two layers,
A two-layer immobilized enzyme film 44 and a polymer adhesive film 45
And a polycarbonate film (P
C film) 47.

The pair of metal electrodes 42 formed on the PI film 41 captures an increase or decrease in oxygen or hydrogen peroxide due to an enzyme reaction in the enzyme film 44 as a change in oxidation current. Polymer film 43 formed on metal electrode 42
Is formed by coating the metal electrode 42 and heating it further. By this heat treatment, the permeability of the electrode interfering substance can be sufficiently restricted while maintaining the permeability of hydrogen peroxide as compared with the case of only the coating, and the inherent properties of the material are improved. Therefore, even if the urine comes into direct contact with the sensor 1, the urine component can be analyzed.

As the immobilized enzyme film 44 formed on the polymer film 43, glucose oxidase is used. In this case, the enzymatic reaction becomes Glucose + O ₂ → gluconic acid + H ₂ O ₂ , and along with the decomposition of glucose, oxygen is consumed to generate hydrogen peroxide and gluconic acid.

The hydrogen peroxide generated here is applied to the metal electrode 42.
Is decomposed into water and oxygen while emitting electrons by the catalytic action of. By measuring the emitted electrons as a current, the sugar concentration in urine can be measured.

In the above embodiment, the subject identifying means 5
Has been described with the configuration using the subject selection switch 8 and the subject display 9, but the present invention is not limited to this. For example, it may be configured to have switches for the number of persons to be selected,
In addition, there is a method in which a subject has a storage medium storing a subject code such as an ID card and reads it.
Furthermore, for example, a fingerprint touching the measurement switch 6 is detected.
There is also a method of identifying the subject unconsciously.

In the above embodiment, an example is shown in which the concentration of sugar contained in urine is measured by a sensor. However, in addition to sugar, the state of health can be grasped by the concentration of protein, urobili, etc. contained in urine. It is also effective for the measurement of possible components.

[0051]

As described above, the urine test apparatus of the present invention has the following effects.

According to the urine test apparatus of the first aspect of the present invention, the signal processing means calculates the concentration of a specific component contained in urine based on the output signal of the sensor, and the storage means stores the calculation result. The urine component concentration is stored together with the measurement order. Then, the regression line slope calculation means calculates the slope of the regression line to the measurement order of the urine component concentration stored in the storage means, and the correlation coefficient calculation means calculates the correlation coefficient between the measurement order and the urine component concentration. . Then, the tendency determining means determines whether the tendency of the change in the urine component concentration is increasing, decreasing, or stable based on the slope and the correlation coefficient, and the display means displays the concentration and the determination result by the tendency determining means. Therefore, the subject can be notified of the measurement result and the tendency of the change by a display device having a simple configuration.

According to the urine test apparatus of the second aspect of the present invention, the storage means stores the specified subject information together with the urine component concentration and the measurement order, and the tendency judgment means stores the information of the stored values of the storage means. Since the tendency of the change in the urine component concentration is determined by extracting only the memory value of the subject specified by the subject specifying means, even if a plurality of persons use one urine test apparatus, the The tendency of change can be determined,
Usability is improved.

According to the urine test apparatus of the third aspect of the present invention, the case mounted on the toilet is provided with the sensor, the signal processing means, the storage means, the tendency judgment means and the display means.
The display can be viewed near the toilet, and the subject can know the measurement result immediately after urination, and can also know the tendency, so that usability is improved.

According to the urine test apparatus of the fourth aspect of the present invention, the sensor driving means for moving the sensor and the storage liquid container are provided inside the case, and the sensor is moved into the toilet bowl during measurement by the sensor driving means. At times, the urine component is moved so as to be stored in the storage solution container, so that a specific urine component can be automatically measured with a simple configuration, and the sensor can be used repeatedly, thereby improving usability.

According to the urine test apparatus according to the fifth aspect of the present invention, since the polymer film on the hydrogen peroxide electrode is formed by coating and heating, the sensor maintains the permeability of hydrogen peroxide. The permeation of the electrode interfering substance can be restricted, and even if the sensor directly receives the urine droplet of the urinator in the toilet bowl, the measurement can be performed with high reliability, and the configuration can be simplified.

[Brief description of the drawings]

FIG. 1 is a block diagram of a urine test apparatus according to an embodiment of the present invention.

FIG. 2 is a view for explaining storage means of the urine testing apparatus.

FIG. 3 is a characteristic diagram showing a change in urine sugar concentration of the urine test apparatus.

FIG. 4 is a plan configuration diagram of a sensor driving unit of the urine testing apparatus.

FIG. 5 is a sectional view of an essential part of the urine testing apparatus.

FIG. 6 is a perspective view showing a state where the urine test apparatus is attached to a toilet bowl.

FIG. 7 is a sectional view of a sensor of the urine testing apparatus.

FIG. 8 is a characteristic diagram showing a change in urine sugar concentration for explaining a problem of a conventional example.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 sensor 2 sensor driving means 5 subject identification means 7 display means 10 signal processing means 11 storage means 12 tendency determining means 13 regression linear slope calculating means 14 correlation coefficient calculating means 27 storage liquid container 38 case 41 insulating substrate 42 hydrogen peroxide electrode 43 polymer membrane 44 immobilized enzyme membrane

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tadashi Miki 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F-term (reference) 2D038 ZA03 2G045 AA15 AA25 CB03 DA31 FB01 FB05 JA01 JA04 JA07

Claims (5)

[Claims] 1. A sensor for generating an output signal correlated with the concentration of a specific component contained in urine, signal processing means for calculating a specific urine component concentration from a signal of the sensor, and the signal processing Storage means for storing the urine component concentration which is the calculation result of the means together with the measurement order; and tendency determination for determining whether the tendency of the change in the urine component concentration is increasing, decreasing or stable based on the stored value of the storage means. Means, and a display means for displaying the urine component concentration calculated by the signal processing means and the determination result determined by the tendency determining means, wherein the tendency determining means comprises a urine component concentration stored in the storage means. A regression line slope calculation means for calculating the slope of the regression line to the measurement order, and a correlation coefficient calculation means for calculating a correlation coefficient between the measurement order and urine component concentration stored in the storage means, Slope of the regression line A urine test apparatus which determines a tendency of a change in urine component concentration based on a slope calculated by a calculating means and a correlation coefficient calculated by the correlation coefficient calculating means. 2. A subject identifying means for identifying a subject, wherein the storage means stores subject information identified by the subject identifying means together with a urine component concentration and a measurement order,
2. The urine test apparatus according to claim 1, wherein the tendency judging unit judges only a change in the urine component concentration by extracting only the stored value of the subject identified by the subject identifying unit from the stored values of the storage unit. 3. The urine test apparatus according to claim 1, further comprising a case attached to a toilet bowl, wherein the case includes a sensor, a signal processing unit, a storage unit, a tendency determination unit, and a display unit. 4. The case includes therein a sensor driving means for moving a sensor, and a storage liquid container for storing a storage liquid which is kept in contact with the sensor when measurement is not performed, wherein the sensor driving means measures the sensor. 4. The urine test apparatus according to claim 3, wherein the urine test apparatus is moved so as to be sometimes moved into a toilet bowl and stored in the storage liquid container when measurement is not performed. 5. The sensor has a hydrogen peroxide electrode formed on an insulating substrate, the hydrogen peroxide electrode is coated with a polymer film formed by coating and heating, and an immobilized enzyme film is provided on the polymer film. The urine test apparatus according to any one of claims 1 to 4, wherein the urine test apparatus is a planar enzyme sensor.