JP2018143568A - Biological information measurement device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a biological information measurement device capable of improving convenience by calculating a urine flow rate.SOLUTION: The biological information measurement device comprises an arithmetic unit which acquires urine flow velocity information relating to the velocity of urine discharged by a user measured by a urine flow velocity measurement device and urine volume information relating to the volume of the urine measured by a urine volume measurement device and calculates a urine flow rate on the basis of the urine flow velocity information and the urine volume information.SELECTED DRAWING: Figure 1

Description

  Aspects of the present invention generally relate to a biological information measurement device.

  Conventionally, medical information relating to bladder function uses biological information such as urine volume in the bladder and urine flow rate (amount of urine excreted per unit time). By combining the measurement results of the urinary flow rate and urine volume, for example, the presence or state of a disease in the lower urinary tract can be determined more accurately. Alternatively, care prevention and preventive medicine relating to urination can be realized (for example, Patent Document 1).

Japanese Patent No. 5941304 Japanese Patent No. 5553315

  For the measurement of the urinary flow rate, for example, a biological information measuring device integrated with a toilet is used. In this case, there is a problem that the toilet bowl that can be used by the user when measuring the urinary flow rate is limited to the toilet bowl in which the biological information measuring device is integrated. Urination is considered to be susceptible to mental influence, and it is desirable not to give a load or restriction to the user when urinating.

In addition, for measuring the urine volume, for example, a urine volume measuring device for measuring the urine volume in the bladder using ultrasonic waves is used. According to such a urine volume measuring apparatus, the urine volume can be easily measured. However, with a urine volume measuring device, it may be difficult to accurately measure information that changes with time, such as urine flow rate.
On the other hand, as a measurement device related to urine, for example, a urine flow rate measurement device that measures a urine flow rate (rate of discharged urine) using a Doppler sensor or the like has been proposed (for example, Patent Document 2). Such a urine flow rate measuring device has an advantage that the urination location is not limited because the urine flow rate can be measured without being integrated with the toilet. However, with the urine flow velocity measuring device, it may be difficult to accurately measure information related to the amount of urine, such as the amount of urination and the urine flow rate.

  The present invention has been made on the basis of recognition of such a problem, and an object thereof is to provide a biological information measuring device capable of calculating a urine flow rate and improving convenience.

  1st invention acquires the urine flow rate information regarding the speed of the urine excreted by the user measured by the urine flow rate measuring device, and the urine volume information regarding the amount of urine measured by the urine volume measuring device, A biological information measuring apparatus comprising a calculation unit for calculating a urine flow rate based on the urine flow rate information and the urine volume information.

  According to this biological information measuring device, the urinary flow rate can be calculated based on the measurement result of the urine flow velocity measuring device and the measurement result of the urine volume measuring device. In general, the urine flow rate and urine volume are measurable even if the measuring device is not installed in the toilet. For this reason, the toilet bowl used when measuring a urinary flow rate is not limited. Therefore, convenience can be improved.

  In a second aspect based on the first aspect, the urine flow velocity measuring device is capable of measuring a time when the user excretes the urine, and the calculation unit further acquires urination time information regarding the time. The biological information measuring apparatus calculates the urinary flow rate based on the urine flow velocity information, the urination time information, and the urine volume information.

  In a urine volume measuring device, it may be difficult to accurately measure temporal information such as a user's urination time. On the other hand, according to this biological information measuring device, the urinary flow rate is calculated based on the information on the time when the user excreted urine measured by the urine flow velocity measuring device. Thereby, measurement accuracy can be improved.

  A third invention further comprises the urine flow rate measuring device and the urine volume measuring device according to the first or second invention, wherein the urine flow rate measuring device radiates a wave toward the urine, The velocity of the urine is calculated based on a reflected wave, the urine volume measuring device emits an ultrasonic wave toward the user's bladder, and the amount of the urine is calculated based on the reflected wave of the ultrasonic wave. It is a biological information measuring device characterized by calculating.

  According to this biological information measuring device, a urine flow velocity measuring device using waves and a urine volume measuring device using ultrasonic waves are used. Thereby, each of the urine flow velocity measuring device and the urine volume measuring device can be made portable, and convenience can be further improved.

  According to the aspect of the present invention, a biological information measuring device capable of calculating the urinary flow rate and improving convenience can be provided.

It is a block diagram which illustrates the living body information measuring device concerning an embodiment. It is a perspective view which illustrates the use condition of an example of a urine flow velocity measuring device. It is a schematic diagram showing a part of vicinity of the urine flow velocity measuring apparatus. It is a perspective view which shows an example of a urine volume measuring apparatus. It is a block diagram which illustrates the living body information measuring device concerning an embodiment. It is a block diagram which illustrates the living body information measuring device concerning an embodiment. It is a block diagram which illustrates the living body information measuring device concerning an embodiment.

Embodiments of the present invention will be described below with reference to the drawings. In addition, in each drawing, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted suitably.
FIG. 1 is a block diagram illustrating a biological information measuring apparatus according to an embodiment.
As shown in FIG. 1, the biological information measuring apparatus 101 according to the embodiment includes a calculation unit 50. For the calculation unit 50, for example, a circuit such as a microcomputer is used.
In this example, the biological information measuring device 101 further includes a urine flow velocity measuring device 10 and a urine volume measuring device 20.

  The urine flow rate measuring device 10 measures the speed of urine excreted by the user (urine flow rate) and outputs information on the urine flow rate (urine flow rate information S). A specific example of the urine flow velocity measuring device 10 will be described later with reference to FIGS.

  Moreover, the urine flow velocity measuring apparatus 10 can measure the time when the user excretes urine (urination time). The urine flow velocity measuring device 10 outputs information on the measured urination time (urination time information T). The urination time information T includes information on at least one of the time when urine excretion starts, the time when urine excretion ends, and each time when the urine flow rate is measured. For example, the length of time required for the user to excrete urine can be known from the urination time information T.

  The urine volume measuring device 20 measures the amount of urine excreted by the user (urination volume) and outputs information relating to the urine volume (urine volume information U). A specific example of the urine volume measuring device 20 will be described later with reference to FIG.

The calculation unit 50 acquires urine flow velocity information S, urination time information T, and urine volume information U. The connection between the calculation unit 50 and the urine flow rate measurement device 10 and the connection between the calculation unit 50 and the urine volume measurement device 20 may be wired connection or wireless connection. The calculation unit 50 calculates the urinary flow rate based on the urine flow velocity information S, the urination time information T, and the urine volume information U.
For example, the urine flow rate can be calculated (estimated) based on the following equations (1) to (3).

ここで、Ｑは、尿量測定装置２０によって測定された排尿量であり、尿量情報Ｕに含まれる。ｖ（ｔ）は、尿流速測定装置１０によって測定された尿流速であり、尿流速情報Ｓに含まれる。積分時間に関する情報は、排尿時間情報Ｔに含まれる。ｑ（ｔ）は、尿流率である。尿流率は、例えば臨床的な活用実績が高く、ｑ（ｔ）を算出（推定）することが望まれる。

Here, Q is the amount of urination measured by the urine volume measuring device 20 and is included in the urine volume information U. v (t) is the urine flow rate measured by the urine flow rate measuring apparatus 10 and is included in the urine flow rate information S. Information on the integration time is included in the urination time information T. q (t) is the urinary flow rate. The urinary flow rate has a high clinical utilization record, for example, and it is desirable to calculate (estimate) q (t).

このとき、尿流率（ｑ（ｔ））は、式（３）により表される。

A (t) represents the area of the lower urinary tract. Here, it is assumed that the diameter of the lower urinary tract is constant due to the urine flow. That is, if A (t) is considered to be a constant value,

At this time, the urine flow rate (q (t)) is expressed by the equation (3).

  Thus, in the biological information measurement device according to the embodiment, the urinary flow rate can be calculated based on the measurement result of the urine flow rate measurement device 10 and the measurement result of the urine volume measurement device 20. In general, the urine flow rate and urine volume are measurable even if the measuring device is not installed in the toilet. For this reason, the toilet bowl used when measuring a urinary flow rate is not limited. Therefore, convenience can be improved.

Next, an example of the urine flow velocity measuring device 10 will be described with reference to FIGS.
FIG. 2 is a perspective view illustrating an example of how the urine flow rate measuring device is used.
FIG. 3 is a schematic diagram showing a part of the vicinity of the urine flow velocity measuring device in FIG.
As shown in FIG. 3, the urine flow velocity measuring device 10 includes a wave device 11, a receiving device 13, and a housing 15. The wave device 11 and the receiving device 13 are provided in the housing 15. For example, the wave device 11 and the reception device 13 are accommodated in the housing 15.

  The wave device 11 radiates the wave TW toward the urine (urine flow) UF excreted by the user toward the toilet bowl 200. The wave TW radiated from the wave device 11 is an electromagnetic wave such as a microwave or a millimeter wave. However, the wave used in the embodiment may be an ultrasonic wave or light. Hereinafter, a case where the wave is a microwave will be described as an example.

  The receiving device 13 receives the reflected wave RW of the wave TW reflected by the urine UF excreted by the user. For example, the frequency of the wave TW changes when reflected by the urine UF. That is, the frequency of the wave TW and the frequency of the reflected wave RW are different.

  The wave device 11 and the receiving device 13 are connected to a control device 19 (see FIG. 1). For the control device 19, for example, a circuit such as a microcomputer is used. At least a part of the control device 19 may be housed in the housing 15 or may be provided separately from the housing 15. The connection with the control device 19 may be a wired connection or a wireless connection.

  The control device 19 controls the operations of the wave device 11 and the reception device 13. For example, the control device 19 transmits a control signal that causes the wave device 11 to emit the wave TW. Further, the control device 19 receives information on the reflected wave RW received from the receiving device 13. The control device 19 can detect the flow speed (urine flow velocity) and the flow direction of the urine UF from the information of the wave TW (for example, frequency and wavelength) and the information of the reflected wave RW (for example, frequency and wavelength). it can. The wave device 11, the receiving device 13, and the control device 19 function as, for example, a Doppler sensor.

  As shown in FIG. 2, the housing 15 is fixed to the toilet bowl 200 by fixing means 32. The fixing means 32 has an arm portion 32a and a mounting portion 32b. For example, a resin tube (pipe) or a metal tube excellent in bending resistance can be used for the arm portion 32a. The mounting portion 32b is attached to one end of the arm portion 32a, and the housing 15 is attached to the other end side of the arm portion 32a. For example, a suction cup or a double-sided tape can be used for the mounting portion 32b. The mounting portion 32b is attached to the side surface of the toilet bowl 200.

  The arm portion 32a and the mounting portion 32b are preferably detachable from the toilet bowl 200. That is, it is desirable that the housing 15 (the urine flow velocity measuring device 10) be detachable from the toilet bowl 200. “Fixed” means that the position and orientation of the housing 15 and the like can be fixed during measurement of the urine flow rate and the like, and the position and orientation of the housing 15 and the like may be adjustable before and after the measurement.

  The casing 15 is arranged by the fixing means 32 so that the wave TW hits the urine UF on the way to the surface of the bowl 61 of the toilet bowl 200. For example, the wave device 11 in the housing 15 is arranged so as to face the user (urine flow), and radiates the wave TW toward the user's penis 7. Alternatively, the wave device 11 may be arranged so as to radiate the wave TW toward the inside of the bowl 61 by the fixing means 32. The traveling direction of the wave TW is desirably a direction along the direction in which the urine UF flows (or the opposite direction). In other words, the traveling direction of the wave TW is preferably parallel (or antiparallel) to the direction of urine flow. However, it is sufficient that the traveling direction of the wave TW and the direction in which the urine UF flows are not orthogonal.

  In this example, the urine flow velocity measuring device 10 further includes a projector 33, a tube 34, and a bag body 16. The projector 33 emits light Lt toward the bowl 61. As the projector 33, for example, an LED (light emitting diode) or a laser pointer can be used. The position and orientation of the projector 33 are determined with respect to the housing 15, for example, and the projector 33 is fixed directly or indirectly to the housing 15. For example, the projector 33 is arranged so that the traveling direction of the light Lt is along the traveling direction of the wave TW. The projector 33 may be housed in the housing 15.

  The user can visually recognize the region of the bowl 61 illuminated by the projector 33, that is, the region R1 where the light Lt is projected. Then, the user excretes urine toward the region R1. Thus, the projector 33 guides the direction in which urine is released with respect to the traveling direction of the wave TW. Thereby, it becomes easy to apply the wave TW to the urine UF, and the measurement accuracy can be improved.

  The cylinder 34 (for example, a cylinder) is attached to the end of the arm portion 32a. The housing 15 and the projector 33 are fixed with respect to the tube 34. That is, the housing 15 and the projector 33 are supported by the arm portion 32 a via the cylinder 34.

  The user urinates so that urine passes inside the tube 34. That is, the urine UF passes through the tube 34 and is released to the toilet bowl 200. By providing such a tube 34, it is possible to limit the path through which the urine UF reaches the bowl 61 and the direction in which the urine UF flows. Moreover, although urine is likely to be scattered depending on the user, the flow of urine can be guided by the tube 34. The casing 15 is arranged so that the wave TW hits the urine UF whose path and direction are limited. As a result, measurement errors caused by scattering of urine and variations in the direction in which urine flows can be suppressed.

  The bag body 16 covers at least one of the housing 15 and the projector 33. For the bag body 16, for example, a thin resin can be used. The bag body 16 is preferably disposable in consideration of contamination with urine and the like. The bag body 16 can prevent contamination due to urine scattering and infectious diseases due to adhesion of urine droplets. Hygiene is maintained by replacing the bag 16 each time it is used.

  The urine flow velocity measuring device 10 does not necessarily have to include the fixing means 32, the projector 33, the tube 34, and the bag body 16. For example, the user may hold the housing 15 during urination and measurement. In this case, it is desirable that the housing 15 has a structure that can be mounted on a user's finger or the like. Or you may fix the housing | casing 15 to the side surface, the back surface, etc. of the toilet bowl 200 so that attachment or detachment is possible. The housing 15 may be disposed on either the inside or the outside of the bowl 61. In this example, the toilet bowl 200 is a urinal, but it may be a Western-style sitting toilet. In the embodiment, the shape and function of the toilet bowl are not limited.

Moreover, the urine flow velocity measuring apparatus 10 is not limited to a sensor that uses a wave, and may use an impeller, for example. The impeller rotates when the urine excreted toward the toilet hits the impeller, and the urine flow rate may be calculated (estimated) from the rotation speed or the like.
In the case of using the urine flow velocity measuring device 10 that uses wave motion, the urine flow velocity measuring device 10 can be easily attached to and detached from the toilet 200 and portable. Thereby, the user can measure the urine flow rate regardless of the urination location, and can improve convenience.

Next, an example of the urine volume measuring device 20 will be described with reference to FIG.
FIG. 4 is a perspective view showing an example of a urine volume measuring apparatus. As shown in FIG. 4, the urine volume measuring device 20 includes a probe unit 21 and a main body unit 22.
The probe unit 21 is, for example, a flat plate shape, and can emit ultrasonic waves and receive the reflected waves. The main body 22 is provided with a display unit 24 and a control device 29. For the control device 29, for example, a circuit such as a microcomputer is used. The probe unit 21 is connected to the control device 29 via the cable 23.

  The control device 29 controls the operation of the probe unit 21. For example, the control device 29 transmits a control signal that causes the probe unit 21 to emit ultrasonic waves. Further, the control device 29 receives information of the reflected wave of the emitted ultrasonic wave from the probe unit 21. The display unit 24 is, for example, a liquid crystal display, and the user can operate the urine volume measuring device 20 while viewing the display on the display unit 24.

  When the urine volume is measured by the urine volume measuring device 20, the probe unit 21 is attached to the user's lower abdomen. First, before the user excretes urine, the probe unit 21 (pre-urination bladder capacity measuring means 21b (see FIG. 1)) radiates ultrasonic waves toward the user's bladder, and the urine in the bladder or bladder The reflected wave of the ultrasonic wave reflected by etc. is received. The control device 29 calculates the urine volume in the bladder based on the reflected wave. For example, the distance to the object can be calculated based on the time from when the ultrasonic wave is radiated to the object until the reflected wave reflected by the object is received. Thereby, for example, information on the shape of the bladder can be acquired, and the amount of urine in the bladder can be calculated.

  After the user measures urine excretion and urine flow velocity, the probe unit 21 (post-urination bladder capacity measuring means 21a (see FIG. 1)) again emits ultrasonic waves toward the user's bladder, The reflected wave is received. The control device 29 calculates the urine volume in the bladder based on the reflected wave.

  As described above, the amount of urine in the bladder before and after the user excretes urine is measured. From the difference between the amount of urine in the bladder before excreting urine and the amount of urine in the bladder after excreting urine, the amount of excreted urine (the amount of urination) is calculated.

Not only having a probe attached to the lower abdomen, any ultrasonic diagnostic apparatus may be used. The urine volume measuring device 20 is not limited to a device that uses ultrasonic waves, and may calculate the urine volume based on, for example, the weight difference of the user before and after urination.
When the urine volume measuring device 20 using ultrasonic waves is used, the urine volume measuring device 20 can be easily carried and the convenience can be improved like the urine volume measuring device 20 shown in FIG. .

Such a urine volume measuring device 20 is used for nursing or nursing care of a patient with dysuria or a patient who does not feel urine.
For example, a method of calculating the urine flow rate from the measurement result of the urine volume measuring device 20 without using the urine flow velocity measuring device 10 is also conceivable. In this method, for example, the urine flow rate is calculated from the shape of the elastically deformed bladder. Here, in order to measure temporal changes in the shape of the bladder by ultrasonic irradiation, it is desirable that the user maintain an appropriate posture so that the propagation of ultrasonic waves is not hindered by the pubic bone or the like during the measurement. . That is, the posture of the user is restricted during urination, and the load in measurement increases. In the urine volume measuring device 20, it may be difficult to accurately measure temporal information such as urination time and urine flow rate that changes over time.

  On the other hand, a method of calculating the urinary flow rate from the measurement result of the urine flow rate measuring device 10 without using the urine volume measuring device 20 is also conceivable. However, in this case, since the area of the lower urinary tract (A in Formula (3)) cannot be measured, the measurement accuracy may be reduced. In addition, for example, a method of estimating the area (A) of the lower urinary tract from the intensity of the reflected wave is conceivable. However, since the signal intensity of the Doppler sensor varies depending on the surrounding environment of the sensor, the estimation accuracy may be low. .

  On the other hand, in the embodiment, the urine output (Q) is measured by the urine volume measuring device 20 from the volume difference of the bladder before and after urination. The area (A) of the lower urinary tract is calculated based on the urination volume (Q) and temporal information (urination time, urine flow rate) measured by the urine flow velocity measuring device 10 (equation (2)). . Then, the urinary flow rate is calculated based on the area (A) of the lower urinary tract and the urine flow velocity (formula (3)). As described above, the urinary flow rate that has been utilized as a clinical index can be obtained while suppressing the load in measurement.

  In the example shown in FIG. 1, the biological information measuring device 101 includes the urine flow velocity measuring device 10 and the urine volume measuring device 20, but the biological information measuring device according to the embodiment is not necessarily the urine flow velocity measuring device and the urine volume. It does not have to have a measuring device. The arithmetic unit 50 may include a dedicated circuit chip or a general-purpose processor. That is, the biological information measuring apparatus according to the embodiment may be a computer (PC) in which a program for executing the above-described urine flow rate calculation process is installed. In addition, the biological information measurement device according to the embodiment may be a device including the calculation unit 50 and any one of the urine flow velocity measurement device 10 and the urine volume measurement device 20. Further, the input of information to the calculation unit 50 may be wired communication, wireless communication, or manual data input.

FIG. 5 is a block diagram illustrating the biological information measuring apparatus according to the embodiment.
In the biological information measuring apparatus 102 shown in FIG. 5, the calculation unit 50 is provided integrally with the urine flow rate measuring apparatus 10. For example, the calculation unit 50 is housed in a housing (for example, the housing 15) of the urine flow velocity measuring device 10. The arithmetic unit 50 may be a circuit formed on the same substrate as the control device 19. The arithmetic unit 50 and the control device 19 may be integrated into one control circuit. The calculation unit 50 may be regarded as a part of the urine flow velocity measuring device 10. In each embodiment of the present specification, a part of each functional block may be divided as appropriate, or at least a part of each functional block may be integrated as appropriate.

  The urine flow rate measuring device 10 further includes an input device 17 and an output device 18. The input device 17 and the output device 18 are input / output interfaces that communicate with the outside via, for example, a wired or wireless connection. The input device 17 may be switches for operating the input terminal and the urine flow velocity measuring device 10. The output device 18 may be an output terminal or display means (liquid crystal display or the like).

  The control device 19 of the urine flow velocity measuring device 10 transmits the urine flow velocity information S and the urination time information T to the calculation unit 50. The control device 29 of the urine volume measuring device 20 transmits the urine volume information U to the calculation unit 50 via the input device 17. For input to the input device 17, either wired communication or wireless communication may be used. Manual data input may also be performed. The computing unit 50 calculates the urinary flow rate based on the acquired urine flow rate information S, urine volume information U, and the like. The obtained urine flow rate is output from the output device 18.

FIG. 6 is a block diagram illustrating a biological information measuring apparatus according to the embodiment.
In the biological information measuring apparatus 103 shown in FIG. 6, the calculation unit 50 is provided integrally with the urine volume measuring apparatus 20. For example, the calculation unit 50 is housed in a housing (for example, the main body unit 22) of the urine volume measuring device 20. The arithmetic unit 50 may be a circuit formed on the same substrate as the control device 29. The arithmetic unit 50 may be a circuit formed on the same substrate as the control device 29. The arithmetic unit 50 and the control device 29 may be integrated into one control circuit. The calculation unit 50 may be regarded as a part of the urine volume measuring device 20.

  The urine volume measuring device 20 further includes an input device 27 and an output device 28. The input device 27 and the output device 28 are input / output interfaces that communicate with the outside via, for example, a wired or wireless connection. The input device 27 may be switches for operating the input terminal and the urine volume measuring device 20. The output device 28 may be an output terminal or a display unit.

  The control device 19 of the urine flow velocity measuring device 10 transmits the urine flow velocity information S and the urination time information T to the calculation unit 50 via the input device 27. For input to the input device 27, either wired communication or wireless communication may be used. Manual data input may also be performed. The control device 29 of the urine volume measuring device 20 transmits the urine volume information U to the calculation unit 50. The computing unit 50 calculates the urinary flow rate based on the acquired urine flow rate information S, urine volume information U, and the like. The obtained urine flow rate is output from the output device 28.

FIG. 7 is a block diagram illustrating a biological information measuring apparatus according to the embodiment.
In the biological information measuring apparatus 104 shown in FIG. 7, routers 41 and 42 and a server 43 are used for communication. These may be equipment provided in a facility such as a hospital. The calculation unit 50 acquires urine flow rate information S and urination time information T from the urine flow rate measurement device 10 via the router 41 and the server 43. In addition, the calculation unit 50 acquires the urine volume information U from the urine volume measuring device 20 via the router 42 and the server 43.

The embodiment of the present invention has been described above. However, the present invention is not limited to these descriptions. As long as the features of the present invention are provided, those skilled in the art appropriately modified the design of the above-described embodiments are also included in the scope of the present invention. For example, the shape, dimensions, material, arrangement, and the like of each element included in the biological information measuring device are not limited to those illustrated, but can be changed as appropriate.
Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

  7 penis, 10 urine flow rate measuring device, 11 wave device, 13 receiving device, 15 housing, 16 bag, 17 input device, 18 output device, 19 control device, 20 urine volume measuring device, 21 probe unit, 22 body unit , 23 cable, 24 display unit, 27 input device, 28 output device, 29 control device, 32 fixing means, 32a arm unit, 32b mounting unit, 33 projector, 34 cylinder, 41, 42 router, 43 server, 50 computing unit, 61 bowl, 101-104 biological information measuring device, 200 toilet

Claims (3)

Urine flow rate information on the speed of urine excreted by the user as measured by the urine flow rate measuring device;
Urine volume information on the urine volume measured by the urine volume measuring device;
A biological information measuring device comprising: an arithmetic unit that acquires urine flow rate based on the urine flow rate information and the urine volume information. The urine flow rate measuring device is capable of measuring the time when the user excretes the urine,
The said calculating part further acquires the urination time information regarding the said time, and calculates the said urine flow rate based on the said urine flow velocity information, the said urination time information, and the said urine volume information. Biological information measuring device. Further comprising the urine flow rate measuring device and the urine volume measuring device,
The urine flow velocity measuring device radiates a wave toward the urine, calculates the velocity of the urine based on a reflected wave of the wave,
The urine volume measuring device radiates an ultrasonic wave toward the user's bladder and calculates the amount of the urine based on a reflected wave of the ultrasonic wave. Biological information measuring device.

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