WO2020137631A1

WO2020137631A1 - Urine volume measuring device, urine volume measuring method, and program

Info

Publication number: WO2020137631A1
Application number: PCT/JP2019/048973
Authority: WO
Inventors: 和久山浦
Original assignee: 株式会社リリアム大塚
Priority date: 2018-12-26
Filing date: 2019-12-13
Publication date: 2020-07-02
Also published as: TW202038861A

Abstract

Provided are a urine volume measuring device, a urine volume measuring method, and a program which are capable of eliminating the influence of a procedure and a noise. The urine volume measuring device comprises a processor configured to: determine whether the standard deviation of a plurality of pieces of measurement data is within a predetermined threshold; exclude measurement data with the maximum squared deviation from the plurality of pieces of measurement data, when the standard deviation is not within the predetermined threshold; further perform a determination as to whether the standard deviation of a plurality of pieces of remaining measurement data is within a predetermined threshold; determine whether the number of the plurality of pieces of measurement data is a predetermined number, when the standard deviation is within the predetermined threshold; acquire measurement data for shortage when the number of the plurality of pieces of measurement data is not the predetermined number; further perform a determination as to whether the standard deviation is within the predetermined threshold; and calculate an average value of the plurality of pieces of measurement data to specify a urine storage volume when the number of the plurality of pieces of measurement data is the predetermined number.

Description

Urine volume measuring instrument, urine volume measuring method and program

The present invention relates to a urine volume measuring device, and more particularly to a urine volume measuring device for measuring the amount of accumulated urine in the bladder by measurement using ultrasonic waves.

Conventionally, a urine volume measuring device has been known that measures the size of the bladder by transmitting ultrasonic waves to the bladder and receiving ultrasonic echoes that are reflected waves to measure the amount of accumulated urine in the bladder. ing. An ultrasonic diagnostic apparatus is generally known as an apparatus for measuring the state of internal organs using ultrasonic waves, and the ultrasonic diagnostic apparatus can also be used as a urine volume measuring device.

It can be said that the ultrasonic diagnostic apparatus can know the condition of the bladder in detail because the measurement results are displayed as two-dimensional image data. The ultrasonic diagnostic apparatus can know a detailed state, but requires specialized knowledge and skill in how to view image data, and therefore is premised on use in a medical institution.

International Publication No. 2018/168363

Also, if people with symptoms that can not feel that urine has accumulated in the bladder due to brain, nerves, or other illness (unwillingness to urinate) can easily use the urine volume meter at home , It can be said that it can improve the quality of life. Under such circumstances, there is a demand for a urine volume measuring instrument which is highly portable and can be easily handled by the patient himself or a user other than the patient.

From such a viewpoint, Patent Document 1 proposes an ultrasonic measuring device that can perform positioning more easily when measuring data. In this ultrasonic measuring device, the urine accumulation amount can be measured while grasping the angle of the probe by acquiring the one-dimensional information using the ultrasonic A mode.

However, the measured values are constantly fluctuating under the influence of microscopic movements of the living body, the procedure of the measurer, the reaction of the sensor, the bubbles of the gel, etc., and the measurement accuracy of the conventional urine volume measuring instrument is affected by noise. There was a problem that it was easily received and the measurement accuracy was likely to decrease. The conventional urine volume measuring device also requires the user to judge the timing of completion of the measurement and perform the operation.

The present invention has been made in view of the conventional problems, and an object of the present invention is to provide a urine volume measuring device, a urine volume measuring method, and a program capable of eliminating the influence of a technique and noise.

The urine volume measuring device according to an embodiment of the present invention determines whether the standard deviation of a plurality of measurement data is within a predetermined threshold value, and if the standard deviation is not within the predetermined threshold value, the square of the deviation is the maximum. The measurement data is excluded from the plurality of measurement data, the standard deviation of the remaining plurality of measurement data is further determined to be within a predetermined threshold, and if the standard deviation is within the predetermined threshold, a plurality of If the number of measurement data is less than the predetermined number, the measurement data for the shortage is acquired to determine whether the standard deviation is within the predetermined threshold. The method further includes a processor configured to calculate an average value of the plurality of measurement data and specify a urine storage amount when the plurality of measurement data is a predetermined number.

It is a figure which shows the external appearance of the urine volume measuring device of this embodiment. It is a figure which shows the example of a usage state of the urine volume measuring device 1. 3 is a diagram showing traveling directions A, B, C, and D of ultrasonic waves transmitted from the probe 10. FIG. It is a figure which shows the example of a display displayed in an outward scan. It is a figure which shows the example of a display displayed in the measurement of a return path. It is a block diagram of the urine volume measuring device 1 of this embodiment. It is a process flow figure which shows the process in the urine volume measuring device 1 of this embodiment. It is a conceptual diagram which illustrates that the urine volume measurement value was influenced by the technique and noise, and is a plot of a plurality of measurement values in one measurement. It is a processing flow figure which shows the measurement urine volume calculation processing of this embodiment. It is a figure which shows the specific example of a measured urine volume calculation process of this embodiment. It is a figure which shows the specific example of a measured urine volume calculation process of this embodiment. It is a figure which shows the specific example of a measured urine volume calculation process of this embodiment. It is a figure which compared the urine volume measurement value acquired by the measurement urine volume calculation process of this embodiment, and the urine volume measurement value acquired by the conventional method. It is a figure which compared the urine volume measurement value acquired by the measurement urine volume calculation process of this embodiment, and the urine volume measurement value acquired by the conventional method.

Hereinafter, embodiments of the present invention will be described in detail.

FIG. 1 is a diagram showing an appearance of the urine volume measuring device of the present embodiment, and FIG. 2 is a diagram showing an example of a usage state of the urine volume measuring device 1. In the urine volume measuring device 1 of the present embodiment, as shown in FIG. 1, a probe 10 having a plurality of

probe channels

11a, 11b, 11c, 11d is provided at one end of a main body portion 20, and the main body portion 20 further includes A display 30, a button 40, a speaker 50, and a communication I/F (interface) 60 are provided and configured. For the sake of explanation, in this specification, the surface of the main body 20 on which the display 30 is provided is referred to as a “display surface”, and the opposite surface is referred to as a “rear surface”. The urine volume measuring device 1 can perform measurement in the ultrasonic A mode.

As shown in FIG. 2, the urine volume measuring device 1 of the present embodiment allows a user (measurer: the same person as the person being measured or a caretaker who performs the measurement) so that the display surface faces the person's face. The main body 20 is gripped, and the probe 10 is vertically pressed from the surface of the body to the pubis portion in a state in which the person to be measured is lying on his back (supine position). The accumulated amount of urine is measured by reciprocating the urine volume measuring device 1 along the midline of the body in the vicinity of the bladder while the probe 10 is pressed vertically. In the outward path in which the urine volume measuring device 1 is moved while sliding in the umbilicus direction (Y1 direction in FIG. 2) from the pubic portion, the position (maximum) at which the urine collection volume is provisionally identified as the maximum value (also referred to as provisional maximum value) (Also called a value position) is scanned. After that, in the return path in which the urine direction is opposite to the umbilicus direction while sliding in the pubic direction (Y2 direction in FIG. 2), the urine volume measuring device 1 is guided to the maximum value position specified in the outward path, and a plurality of urine volume measuring devices 1 are further provided at that position. The urine accumulation amount is specified by performing the measurement once and performing a detailed calculation. By doing so, after guiding to the maximum value position, it is possible to accurately determine the urine accumulation value by calculating the values measured a plurality of times at the fixed position.

The urine volume measuring device 1 of the present embodiment is intended to specify the correct measurement position and perform the measurement at that position on the assumption that the urine volume that can be measured differs depending on the measurement position. What is the maximum amount of urine storage. Therefore, the urine volume measuring device 1 is moved with respect to the person to be measured, the urine accumulation amount is measured, the position where the measured value becomes the provisional maximum value is specified as the correct measurement position, and the measurement is performed again at the specified position. It can be performed. Thereby, in the urine volume measuring device of the present embodiment, it is possible to perform the measurement at the correct measurement position, it is possible to accurately measure the accumulated urine volume value without any specialized knowledge, and the patient himself or a patient other than The user can handle it easily.

Note that the provisional maximum value may be updated by detailed calculation of the amount of urine collected on the return trip.

The probe 10 transmits and receives ultrasonic waves for each of the plurality of

probe channels

11a, 11b, 11c, and 11d, and supplies a reception signal corresponding to the received ultrasonic echo to the main body unit 20. That is, each

probe channel

11a, 11b, 11c, 11d transmits an ultrasonic wave, and each

probe channel

11a, 11b, 11c, 11d receives an ultrasonic echo which is a reflected wave. The plurality of

probe channels

11a, 11b, 11c, 11d will be described as the first channel 11a, the second channel 11b, the third channel 11c, and the fourth channel 11d from the navel side.

　Here, the bladder is in the pelvis, so it will undergo a characteristic expansion based on its anatomy. The bladder base is closely attached to the tissue of the pelvic floor and its movement is restricted. The bladder expansion associated with the accumulation of urine spreads mainly in the Y1 direction in FIG. 2 while pushing away the relatively small intestine. It has been confirmed by MRI measurement. In the urine volume measuring device 1 according to the present invention, four

probe channels

11a, 11b, 11c and 11d are arranged at regular intervals along the expansion direction.

FIG. 3 is a diagram showing traveling directions A, B, C, and D of the ultrasonic waves transmitted from the probe 10. As shown in FIG. 3, in the urine volume measuring device 1 of the present embodiment, the traveling direction of part of the ultrasonic waves transmitted from the probe 10 is inclined. The tilt angle increases as the distance from the display 30 increases. Specifically, the traveling direction A of the ultrasonic wave transmitted from the first channel 11a close to the display 30 is perpendicular to the end surface of the probe 10, but from the second channel 11b and the third channel 11c. The traveling directions B and C of the transmitted ultrasonic waves gradually increase in angle with respect to the display surface as shown in FIG. 3, and the traveling direction D of the ultrasonic waves transmitted from the fourth channel 11d farthest from the display surface is The angle to the display surface is the largest. The reason the ultrasonic wave is inclined in this manner is to accurately capture the wall of the bladder on the back side of the pubis. This allows the ultrasonic waves to be incident perpendicularly on the bottom surface of the spherical bladder, thereby accurately capturing the wall of the bladder.

The display 30 displays the progress of the scan, that is, how much more the scan needs to be performed and guides the user to the maximum value position on the return path until the scan of the entire image of the bladder on the outward path (outgoing path scan) is completed. For display. The forward scan scans the entire image of the bladder, and as a result, identifies the position of the maximum value. As the progress status, for example, (first stage) the stage of capturing the end of the bladder, (second stage) ) When the urine collection volume measured after capturing the end of the bladder is increasing, (3rd phase) the maximum urine collection volume is detected, (4th phase) the measured urine collection volume is 60% of the maximum value. The progress status can be defined in five stages, such as a stage in which it is detected that there is something (the fifth stage), and a stage in which the measured amount of stored urine is 40% of the maximum value. In the third step, the maximum value of the urine storage amount is detected when the maximum value position is slightly passed. That is, it can be determined that the past measured value is the maximum value when the measured value changes from an increase to a decrease and the measured value which is, for example, 80% of the past measured value is detected when the urine storage amount is the maximum. The progress status is for notifying the user of the position where the maximum value of urine accumulation is detected, and the number of stages is not limited to five, and the meaning of each stage can be defined as appropriate. The detection of the maximum value of the urine accumulation amount may be corrected, and if corrected, the third stage may be returned to the second stage again. For example, if the measured value changes from an increase to a decrease and 80% of the past measured value is once detected, but the measured value again increases and exceeds the maximum measured value. , Corrections are made.

Here, the display on the display 30 will be described. FIG. 4 is a diagram showing a display example displayed in the forward scan, and FIG. 5 is a diagram showing a display example displayed in the return pass measurement. In FIG. 4, (a) indicates the first stage, (b) indicates the second stage, (c) indicates the third stage, and (d) indicates. The above is the fourth stage, and (e) indicates the fifth stage. In FIG. 5, (a) shows that the current measurement position is the maximum value position, (b) shows that the current measurement position is displaced from the maximum value position in the umbilicus direction, and (c) shows the current position. It shows that the measurement position of is displaced from the maximum value position in the pubic direction.

The display 30 can indicate to the user which stage of the progress the forward scan is in by displaying one of five different displays as shown in FIG. 4, for example, in the forward pass. On the return trip, the display 30 displays any one of three different displays, for example, as shown in FIG. 5, so that the user can determine which of the umbilical side and the pubic side the current measurement position deviates. Can be shown. In FIG. 5, whether the measurement position indicated by the arrow deviates to the umbilicus side from the maximum value position (FIG. 5B) or the pubic side from the maximum value position (FIG. 5C). Although only shown, two or more modes are added, one in which the position of the arrow is further away from the center than in FIG. 5(b) on the navel side, and the other in which the position of the arrow is further away from the pubic side than in FIG. 5(c). The current measurement position may be shown in more detail, for example.

In FIG. 1, a button 40 is a button for inputting to turn on/off the power of the urine volume measuring instrument 1 or to start measurement by the urine volume measuring instrument 1. The speaker 50 gives notifications by various sounds.

The communication I/F (interface) 60 is an interface for communicating with a PC (personal computer) or a portable terminal as needed, and for example, a USB port or a wireless port can be adopted. Through this communication I/F (interface) 60, the measurement data stored in the second storage means can be transmitted to these devices.

FIG. 6 is a block diagram of the urine volume measuring device 1 of the present embodiment. As shown in FIG. 6, the urine volume measuring device 1 is configured to include a probe 10, a display 30, a button 40, a speaker 50, a communication I/F 60, and a control unit 100 connected to these. ing.

The control unit 100 includes an ultrasonic wave control unit 110, an A/D conversion unit 120, a calculation unit 130, a storage unit 140, a display processing unit 150, a voice processing unit 160, a communication processing unit 170, and an input control. And a hand portion 180. The calculation unit 130 includes a measurement unit 131 and a determination unit 135, the measurement unit 131 includes a urine accumulation amount calculation unit 132 and a channel pattern acquisition unit 133, and the determination unit 135 includes a scan determination unit 136. It has a maximum value determination unit 137 and a urine accumulation level determination unit 138. In the present embodiment, the “scan determination unit 136” combines the urine storage amount and the channel pattern at the maximum value position, which is the position where the urine storage amount becomes the provisional maximum value, based on the urine storage amount measured by the measurement unit 131. The function of the maximum value position specifying unit that specifies

The A/D conversion unit 120, the calculation unit 130, the storage unit 140, the display processing unit 150, the voice processing unit 160, and the communication processing unit 170 can be configured by a CPU. The ultrasonic control unit 110 can be configured by an ultrasonic control circuit or a CPU.

The ultrasonic control unit 110 controls the probe 10 to emit ultrasonic waves and receive the ultrasonic echoes. The received ultrasonic echo is sent to the calculation unit 130 via the A/D conversion unit 120 for each channel.

Based on the ultrasonic echo received for each channel sent to the calculation unit 130, the measurement unit 131 calculates the urine accumulation amount and specifies which channel was used for detection. The urine accumulation amount calculation unit 132 estimates the depth of the bladder from the received ultrasonic echo, and calculates the urine accumulation amount based on the estimated depth of the bladder. Specifically, in the waveform received on the i-th channel, the peak intensity of the ultrasonic echo from the rear wall is Pi, and the peak-to-peak distance of the ultrasonic echo intensity from the front wall and the rear wall is Di. The urine accumulation amount EU in the bladder can be calculated based on the following equations (1) and (2).
PD=ΣPi×Di (1)
EU=PD×R (2)

Here, i in Pi and Di means a number given to the plurality of channels 11a to 11d, and is an integer from 1 to 4 here. Further, PD is an average index value obtained by adding the product of the intensity Pi of the ultrasonic echo received on each channel 11a to 11d and the distance Di between peaks for i=1 to 4, EU is calculated. The amount of urine stored, R, represents a coefficient determined in accordance with the individual difference based on the anatomical structure and the posture during measurement. Therefore, the average index value PD and the urine accumulation amount EU are calculated each time ultrasonic waves are transmitted and received through the plurality of channels 11a to 11d.

The channel pattern acquisition unit 133 acquires information on which channel pattern the urine accumulation amount calculated by the urine accumulation amount calculation unit 132 is an ultrasonic echo. The channel pattern is information indicating which of the plurality of

probe channels

11a, 11b, 11c and 11d of the probe 10 has received the ultrasonic echo. Specifically, for example, when it is received only on the first channel 11a that is the channel closest to the navel, it is the information that the channel is the first channel 11a, and the channel closest to the pubis and the channel next to it. It is information that it is the fourth channel and the third channel when received on the fourth channel and the third channel.

The measurement unit 131 associates the urine accumulation amount calculated for each measurement with the channel pattern when the urine accumulation amount is measured, passes it to the determination unit 135 as measurement data, and stores it in the storage unit 140.

Here, in the urine volume measuring instrument 1 of the present embodiment, since the user performs the forward scan and the return path measurement by moving the urine volume measuring instrument 1, the urine volume measuring instrument 1 itself controls the measurement position. I can't. Therefore, the scan determination unit 136 determines the position (measurement position) measured by the urine volume measuring device 1 based on the urine accumulation amount measured by the measurement unit 131 and the information (channel pattern) of the channel that received the ultrasonic echo at that time. ) Is determined. Specifically, the scan determination unit 136 temporarily stores, as the measurement data, the measurement data (the urine storage volume and the channel pattern) acquired in the outward scan performed while moving the urine volume measuring device 1 in the Y1 direction in FIG. By storing in the unit 140, the measurement data at each position in the Y1 direction is stored. In particular, the scan determination unit 136 stores in the storage unit 140 the measurement data acquired at the position specified as the maximum value position (including the positions before and after the maximum value position). On the return trip, the maximum value determination unit 137 can determine the relative position between the position of the urine volume measuring device 1 and the maximum value position based on the stored measurement data.

The scan determination unit 136 determines at what stage the progress status is in the forward scan and that the forward scan is completed. In the outward scan, the progress status is divided into a plurality of stages based on the urine accumulation amount at the maximum value position as shown in FIG. For example, when the urine accumulation amount that has tended to increase turns to decrease, the position that has the maximum value can be set as the maximum value position, which can be the third stage. However, due to the influence of noise, etc., this may occur at a position that is not the maximum value, and then it may start decreasing and then increase again. In that case, return from the third stage to the second stage. There is.

In the outward scan, for example, when the measurement that the urine accumulation amount is 40% of the urine accumulation amount at the detected maximum value position occurs continuously a predetermined number of times after the maximum value position is detected (that is, described in FIG. 4). In the example described above, it is possible to determine that the outward scan is completed when it is determined that the fifth stage has been reached.

When the scan determination unit 136 determines that the progress of the forward scan is changed or the forward scan is completed, the scan determination unit 136 displays or notifies the display processing unit 150 or the voice processing unit 160 to that effect in order to notify the user. To do.

When the maximum value determination unit 137 determines that the change in the relative relationship between the measurement position on the return path and the maximum value position or the measurement on the return path has been completed, the maximum value determination unit 137 notifies the user of that fact by the display processing unit 150 or the voice processing. The unit 160 displays and notifies to that effect. Since the measurement position cannot be controlled by the urine volume measuring device 1 itself of the present embodiment, the maximum value position is specified by the urine accumulation amount determined to be the temporary maximum value and the channel pattern associated with the urine accumulation amount. The maximum value determination unit 137 determines the return path measurement position and the maximum value position based on the measurement data measured each time by the measurement unit 131 in the return path measurement and the maximum value position measurement data stored in the storage unit 140. The change in the relative relationship with can be determined.

The maximum value determination unit 137 can also calculate the value of the urine accumulation amount from the measurement data of a plurality of times measured at the maximum value position to specify the urine accumulation amount. For example, the measurement is performed a plurality of times at the maximum value position, a plurality of measurement values are taken near the maximum value, and the average value thereof is specified as the urine accumulation amount. The maximum value determination unit 137 can specify the calculation result of the urine storage amount satisfying a predetermined criterion as an accurate value of the urine storage amount, and determine that the return path measurement is completed. It is determined that the urine storage volume meets the predetermined criteria, for example, when multiple measurement values are obtained near the maximum value by multiple measurements at the maximum value position and the accurate value of the urine storage volume is determined. Is.

When the maximum value determination unit 137 determines that the accurate value of the urine storage amount can be measured, it passes the urine storage amount value to the urine storage amount level determination unit 138.

The urine accumulation level determination unit 138 uses the table in the storage unit 140 in which the urine accumulation amount level stored in advance and the urine accumulation amount value are associated with each other, and stores the urine accumulation amount of the urine accumulation amount value passed from the maximum value determination unit 137. Determine the level. The urine storage level determination unit 138 causes the display processing unit 150 to display the determined urine storage level on the display 30. The urine storage level determination unit 138 may notify the urine storage level determined by the speaker 50 in the audio processing unit 160. The user can determine whether to urinate or not based on the notified urine storage level.

The storage unit 140 stores the urine storage amount and the channel pattern (measurement data) near the maximum value position measured by the measurement unit 131 in association with each other for each measurement. It also stores a table in which the urine collection level and the urine collection value are associated with each other.

The display processing unit 150 generates the display content to be displayed based on the result calculated by the calculation unit 130 and displays it on the display 30.

The voice processing unit 160 generates notification content for voice notification based on the result calculated by the calculation unit 130 and notifies the speaker 50 of the content.

The communication processing unit 170 inputs/outputs data for communicating with an external device via a wired or wireless network via the communication I/F 60. For example, the measured urine storage level is stored in a second storage means (not shown) in association with the date and time of the measurement, and the communication processing unit 170 inputs/outputs the stored data via the communication I/F 60. By doing so, it is possible to manage urination by using the measurement data with an application (software) of an external device such as a PC or a smartphone. The second storage means may be composed of a flash memory, an EEPROM or the like.

Next, the measurement using the urine volume measuring device 1 of the present embodiment will be described. First, the user holds the main body 20 so that the display surface of the urine volume measuring device 1 of the present embodiment faces the navel, and pushes the probe 10 in the vertical direction from the body surface of the pubic portion in a state of lying on the back. Hit When the user presses the button 40, the measurement process is started. In the measurement process, a forward scan is performed when the user moves the urine volume meter 1 in the direction from the pubis to the navel along the midline of the body, and the urine volume meter 1 is moved in the direction opposite to the forward scan. The return path is measured when moving. By the forward scan, time-series measurement data is acquired and which measurement data corresponds to the maximum value position is specified. In the urine volume measuring device 1 of the present embodiment, the fine adjustment algorithm that enables fine adjustment of the measurement position in the return path measurement allows fine adjustment by the user. It makes high measurements easy.

The urine volume measuring instrument 1 of the present embodiment notifies the user that the urine volume measuring instrument 1 is moved in the direction from the pubis to the navel prior to the start of the outward scan. For example, the scan determination unit 136 can notify by the speaker 50 or the display 30.

[Outbound scan]
FIG. 7 is a processing flow chart showing processing in the urine volume measuring device 1 of the present embodiment. When the outward scan is started, the measurement data is acquired by the measurement unit 131 (S1). Specifically, the urine accumulation amount calculation unit 132 calculates the urine accumulation amount, and the channel pattern acquisition unit 133 acquires the channel pattern of the probe 10 used to detect the urine accumulation amount. The urine storage amount and the channel pattern are associated with each other, stored in the storage unit 140, and passed to the determination unit 135.

The outward scan is a scan process for identifying the maximum value position (a combination of the urine volume and the channel pattern at that time), and one of the displays in FIG. 4 is displayed on the display 30 according to the progress status. .. Specifically, FIG. 4A is displayed when the end of the bladder is captured after the scan is started, and then if the progress progresses smoothly, FIG. 4B, FIG. 4C, and FIG. , FIG. 4(e) will be displayed.

The scan determination unit 136 of the determination unit 135 determines whether or not there is a change in the progress status based on which stage of the outward scan the measurement is at this time (S2). In S2, the scan determination unit 136, for example, the urine accumulation amount measured each time by the measurement unit 131 and the urine accumulation measured before (just before and a predetermined number of times before) each time stored in the storage unit 140. The value is compared with the amount to determine which of the above-described first to fifth stages the process is in, and whether the stage has changed.

If the scan determination unit 136 determines that there is a change in the progress status (S2: YES), the display processing unit 150 switches the display on the display 30 (S3). Specifically, the display is switched to any of the displays shown in FIGS. After S2 or S3, the scan determination unit 136 further determines whether the outward scan is completed (S4).

If the scan determination unit 136 determines that there is no change in the progress status (S2: NO) and the forward scan is not completed (S4: NO), the measurement determination unit 131 returns to the measurement (S1) again.

If the forward scan is completed (S4: YES), the scan determination unit 136 notifies that the measurement will be switched to the backward scan (S5). The notification to the effect that the measurement is switched to the return path is generated by, for example, an audio announcement such as "Please switch the scan direction" by the audio processing unit 160 and the speaker 50 is notified, or the display 30 is displayed on the outward scan shown in FIG. The display processing unit 150 generates the display content and displays it on the display 30 so as to switch from the display of 1 to the display of the measurement of the return path shown in FIG.

[Return path measurement]
The return pass measurement is a process for starting the vicinity of the navel and returning to the maximum value position identified by the forward pass scan, and a process for measuring the urine accumulation value. In order to return the urine volume measuring device 1 to the maximum value position, one of the displays shown in FIG. 5 is displayed on the display 30 according to the relative relationship between the measurement position and the maximum value position each time. Specifically, when the measurement of the return path is started, the measurement position is near the navel, so that FIG. 5B is displayed. After that, if the measurement position advances in the pubic direction and exactly matches the maximum value position, FIG. If it is displayed too much, FIG. 5(c) will be displayed.

After S5 in FIG. 7, the measurement unit 131 acquires measurement data (S6) as in the forward scan (S6), stores the measurement data in the storage unit 140, and passes the measurement data to the determination unit 135.

When the maximum value determination unit 137 of the determination unit 135 receives the measurement data, the maximum value determination unit 137 receives the measurement data, and based on whether the measurement data at each time matches the measurement data at the maximum value position and whether there is a deviation, the measurement position at each time. It is determined whether or not there is a change in the relative relationship between the position and the maximum value position (S7).

When there is a change in the relative relationship (S7: YES), the maximum value determination unit 137 gives an instruction to execute the process of switching the notification (S8). In the process of switching the notification, the display processing unit 150 generates a display so as to switch the display of the display 30 to the display showing the changed relative relationship in (a) to (c) of FIG. The processing unit 160 executes by switching the voice notification by the speaker 50. For example, when the measurement position at each time changes from the position closer to the umbilicus than the maximum value position to the state corresponding to the maximum value position, the display is switched from FIG. 5( b) to FIG. 5( a ). At this time, the speaker 50 announces an instruction to stop the movement. According to this instruction, the user can fix the urine volume measuring device 1 in order to perform the measurement at the correct maximum value position.

After the change in the relative relationship is determined (S7) and the necessary notification is switched (S8), the maximum value determination unit 137 determines whether or not the measured position at each time matches the maximum value position. Then, it is determined whether or not the urine accumulation amount is calculated (S9). When it is determined that the measurement position at each time coincides with the maximum value position, it is determined to calculate the urine collection amount (S9: YES), and the calculation of the urine collection amount is executed (S10). The calculation of the urine storage amount is a process in which the measurement by the measuring unit 131 is repeated a plurality of times at the maximum value position and the value of the urine storage amount used for one determination of the urine storage amount level is calculated. It can be said that a more accurate urine storage amount can be obtained by calculating the urine storage amount from the measurement value obtained by performing the measurement a plurality of times for one urine storage amount.

After calculating the urine storage amount, the maximum value determination unit 137 determines whether or not the urine storage amount calculation is completed (return trip measurement is completed) (S11). For example, as the calculation of the urine storage amount in the process of S10, a process of taking a plurality of measurement values near the maximum value and specifying the average value as the urine storage amount is performed. In the process of S11, the value is specified as an accurate urine storage amount, and it is determined that the calculation of the urine storage amount is completed.

When it is determined that the calculation of the urine storage amount has been completed (S11: YES), the maximum value determination unit 137 passes the identified urine storage amount to the urine storage amount level determination unit 138, and the urine storage amount level determination unit 138 receives it. It is determined which urine storage volume level the urine storage volume corresponds to, and the determined urine storage volume level is displayed on the display 30 (S12).

By doing this, the user of the urine volume measuring device 1 can automatically complete the measurement of the urine storage volume without determining the timing of completion of the measurement.

FIG. 8 is a conceptual diagram illustrating that the measured urine volume is affected by the procedure and noise, and is a plot of a plurality of measured values in one measurement. In FIG. 8, the urine volume measurement values are plotted over time. It should be noted that FIG. 8 is modeled for explaining the variation of the urine volume measurement value and is not included in the embodiment of the present invention. As shown in FIG. 8, the measured values are constantly fluctuating due to minute living body movements, measuring person's manipulations due to pressing pressure, sensor reaction, gel bubbles, and the like. Factors that reduce the measured value include, for example, the case where the measuring instrument moves during measurement due to camera shake of the measurer or the like and measures a position other than the maximum value position. Factors that increase the measured value include, for example, the case where a strong reflection echo from a substance in the body different from the bladder is received, or the case where reflection echoes scattered from different channels are received. The measurements may also include outliers (outliers) when affected by noise. In FIG. 8, an extremely large measurement value is illustrated as an outlier (the leftmost peak and the rightmost peak in FIG. 8). When the measurement result is a simple average value of each measurement value, it may be affected by a large measurement value or a small measurement value, which may lead to a decrease in measurement accuracy. The measurement result may also be different from the actual amount of urine stored, subject to outliers when they are included, given the maximum measured value.

As a method of excluding outliers in the urine volume measurement value, for example, a predetermined number of measurement values such as two measurement values in descending order from the maximum value and two measurement values in descending order from the minimum value are excluded, and the remaining A method of calculating an average value from the measured values of 1 can be considered. However, it is not possible to exclude all outliers by simply excluding a predetermined number of measurement values from the actual measurement values. For example, even if two outliers having extremely large values are excluded from all the measured values, the outliers may remain. Since the measurements are constantly changing, as illustrated in FIG. 8, the frequency and number of outliers may vary from measurement to measurement. Further, as the processing speed of measurement increases (that is, the number of samplings increases), the frequency of detecting outliers under the influence of noise may increase. Even if the number of excluded measurement values is increased from the predetermined number as the number of samplings increases, the outliers may remain if they continuously occur. Therefore, sufficient measurement accuracy cannot be obtained by simply excluding a plurality of measured values from the actual measured values.

[Measured urine volume calculation processing]
FIG. 9 is a process flow chart showing the measured urine volume calculation process of this embodiment. FIG. 9 exemplifies a detailed calculation process of S10 (calculation of urine accumulation amount) of FIG. 7. Hereinafter, a case where the user uses the urine volume measuring device 1 to measure the urine volume in the vicinity of the maximum value position and calculates the urine volume will be described.

The urine volume measuring device 1 measures the urine volume of the person to be measured by the measuring unit 131, and acquires measurement data (S1001).

The urine volume measuring device 1 determines whether or not the acquired measurement data is within a predetermined range from the maximum value with reference to the measurement data (provisional maximum value) at the maximum value position stored in the storage unit 140. Yes (S1002). At the start of the measurement urine volume calculation process, the maximum value can use the provisional maximum value acquired during the outward scan, but can be updated by the maximum value update process (S1012) described below. The predetermined range may be, for example, 80% or more from the maximum value. When it is determined that the acquired measurement data is not within the predetermined range from the maximum value (S1002: NO), the urine volume measuring device 1 returns to the process of S1001. If the data is not within the predetermined range from the maximum value, it is possible that the urine volume measuring instrument 1 moved during measurement due to camera shake or the like and the measurement was performed at a position other than the maximum value position, so the measurement data is discarded. When it is determined that the acquired measurement data is within the predetermined range from the maximum value (S1002: YES), the process proceeds to the next process.

The urine volume measuring device 1 accumulates measurement data within a predetermined range from the maximum value in a population of calculation measurement data (S1003).

The urine volume measuring device 1 determines whether or not the data accumulation amount of the population of the measurement data for calculation is N (S1004). N is, for example, an arbitrary value of 10 to 50, and preferably 20 to 30. When it is determined that the data storage amount is not N (S1004: NO), the urine volume measuring device 1 returns to the process of S1001. When it is determined that the data storage amount is N (S1004: YES), the process proceeds to the next process.

The urine volume measuring device 1 sorts N pieces of data, for example, in descending order, and extracts n pieces of data in descending order of numerical value (S1005). The number n is, for example, an arbitrary value of 5 to 30, and preferably 10 to 15.

The urine volume measuring device 1 determines whether or not there are two or more n pieces of data (S1006). When the number of n data is not two or more (S1006: NO), the urine volume measuring instrument 1 returns to the processing of S1001 in order to acquire the measurement data of the shortage. When the number of n data is 2 or more (S1006: YES), the process proceeds to the next process.

The urine volume measuring device 1 obtains the average value and the deviation of each data using n pieces of data, and calculates the standard deviation (S1007).

The urine volume measuring device 1 determines whether the standard deviation is within a predetermined threshold value (S1008). The predetermined threshold is, for example, an arbitrary value of 5 to 30 (ml), and preferably 10 to 20 (ml).

If the standard deviation exceeds a predetermined threshold value (S1008: NO), the urine volume measuring device 1 excludes the data having the maximum square of the deviation of each measurement data from the n data as invalid data (S1009). The urine volume measuring device 1 also returns to the process of S1006 using the remaining data from which the data having the maximum square of the deviation is excluded.

When the standard deviation is within the predetermined threshold value (S1008: YES), the urine volume measuring device 1 determines whether or not there are n positive data sets, by setting the data group having the standard deviation within the predetermined threshold value as the positive data. Yes (S1010).

If the number of positive data is not n, that is, if the invalid data (the data having the maximum square of the deviation) is excluded (S1010: NO), it is determined whether the maximum value is updated (S1011). The urine volume measuring device 1 determines not to update the maximum value when the maximum value of the n pieces of data is not excluded as invalid data, and determines to update the maximum value when the maximum value is excluded.

If it is determined that the maximum value is not updated (S1011: NO), the urine volume measuring instrument 1 returns to the processing of S1001 in order to acquire the measurement data for the shortage.

When it is determined to update the maximum value (S1011: YES), the maximum value in the correct data is updated as a new maximum value (S1012). After updating the maximum value, the urine volume measuring device 1 returns to the process of S1001 in order to acquire the measurement data for the shortage.

If the number of positive data is n (S1010: YES), the result obtained by the measurement urine volume calculation process is confirmed (S1013). The result of the measurement urine volume calculation process may be, for example, the average value of the positive data, and the average value obtained in the process of S1007 may be used.

When the measurement urine volume calculation process ends, in S11 of FIG. 7, the average value of the positive data determined in S1013 is specified as the urine volume.

By doing this, it is possible to exclude false data with certainty, and it is possible to obtain the measurement result of the urine collection volume that removes the influence of the procedure and noise. In the measurement urine volume calculation process of this embodiment, the maximum value is updated with the maximum value within the standard deviation, whereby measurement data closer to the true value can be stored. In the measurement urine volume calculation process of the present embodiment, since incorrect data can be excluded while suppressing the population of measurement data used for statistics to a fixed number or less, a large amount of measurement data becomes unnecessary, and the calculation process The burden is reduced. In FIG. 9, the case where the user uses the urine volume measuring device 1 to measure the urine volume in the vicinity of the maximum value position and to calculate the urine volume has been described. The same process can be performed in the scene of acquiring.

FIG. 10 is a diagram showing a specific example of the measured urine volume calculation processing of the present embodiment. FIG. 10 is a specific example of the processing shown in FIG. 9, and will be described with N=20 (pieces), n=10 (pieces), and a standard deviation threshold value=10 (ml). FIG. 10 is a specific example of the processing after extracting the 10 data in order from the largest numerical value among the 20 data acquired through the processing of S1001 to S1005 of FIG. 9 for simplification of description. Indicates. The 10 pieces of data are illustrated as the urine volume in each of the elements [1] to [10], and indicate that the urine volume of the element [1] is 224 ml, for example.

In the first calculation in FIG. 10, the urine volume measuring device 1 calculates a standard deviation using 10 pieces of data (S1006: YES) (S1007). Since the standard deviation is 116.71 ml, it corresponds to the case where the standard deviation exceeds the threshold value of 10 ml (S1008: NO), the average value is 384.20 ml, and the square of the deviation is illustrated in the column on the right of each measurement data. It becomes a street. The data having the maximum square of the deviation is the element [10] with the square of the deviation=70649.64. Therefore, the element [10] is excluded from the data as invalid data (S1009).

In the second calculation of FIG. 10, the urine volume measuring device 1 uses the remaining 9 data (S1006: YES) excluding the element [10], which is the data with the maximum square of the deviation, to use the standard deviation. Is calculated (S1007). Since the standard deviation is 80.08 ml, it corresponds to the case where the standard deviation exceeds the threshold value of 10 ml (S1008: NO), the average value is 354.67 ml, and the square of the deviation is illustrated in the column on the right of each measurement data. It becomes a street. The data having the maximum square of the deviation is the element [9] with the square of the deviation=18315.11. Therefore, the element [9] is excluded from the data as invalid data (S1009).

In the third calculation of FIG. 10, the urine volume measuring device 1 uses the remaining eight data (S1006: YES) excluding the elements [10] and [9] that are the data with the maximum squared deviation. Then, the standard deviation is calculated (S1007). Since the standard deviation is 68.10 ml, it corresponds to the case where the standard deviation exceeds the threshold value of 10 ml (S1008: NO), the average value is 337.75 ml, and the square of the deviation is illustrated in the column on the right of each measurement data. It becomes a street. Since the data having the maximum square of the deviation is the element [1] having the square of the deviation=12939.06, the element [1] is excluded from the data as invalid data (S1009).

In the fourth calculation in FIG. 10, the urine volume measuring device 1 uses the remaining seven pieces of data (S1006: S1006: The standard deviation is calculated using (YES) (S1007). Since the standard deviation is 56.46 ml, it corresponds to the case where the standard deviation exceeds the threshold value of 10 ml (S1008: NO), the average value is 354.00 ml, and the square of the deviation is illustrated in the column on the right of each measurement data. It becomes a street. The data with the maximum square of the deviation is the element [2] with the square of the deviation=9216.00, so the element [2] is excluded from the data as invalid data (S1009).

In the fifth calculation of FIG. 10, the urine volume measuring device 1 detects the remaining six elements except the elements [10], [9], [1], and [2], which are the data with the maximum squared deviation. The standard deviation is calculated using the data (S1006: YES) (S1007). Since the standard deviation is 43.91 ml, it corresponds to the case where the standard deviation exceeds the threshold value of 10 ml (S1008: NO), the average value is 370.00 ml, and the square of the deviation is illustrated in the column on the right of each measurement data. It becomes a street. Since the data having the maximum square of the deviation is the element [3] with the square of the deviation=3969.00, the element [3] is excluded from the data as invalid data (S1009).

In the sixth operation of FIG. 10, the urine volume measuring device 1 has the remaining elements except the elements [10], [9], [1], [2], and [3] that are the data with the maximum squared deviation. The standard deviation is calculated using the five pieces of data (S1006: YES) (S1007). Since the standard deviation is 36.89 ml, it corresponds to the case where the standard deviation exceeds the threshold value of 10 ml (S1008: NO), the average value is 382.60 ml, and the square of the deviation is illustrated in the column on the right of each measurement data. It becomes a street. Since the data having the maximum square of the deviation is the element [4] with the square of the deviation=5126.56, the element [4] is excluded from the data as invalid data (S1009).

In the seventh calculation in FIG. 10, the urine volume measuring device 1 detects that the elements [10], [9], [1], [2], [3], and [4], which are data that maximize the square of the deviation, The standard deviation is calculated using the remaining four data that have been excluded (S1006: YES) (S1007). Since the standard deviation is 9.94 ml, it corresponds to the case where the standard deviation is within the threshold value of 10 ml (S1008: YES), and the process proceeds to the next process.

The urine volume measuring device 1 sets a data group having a standard deviation within a threshold value of 10 ml as positive data, and determines whether there are 10 positive data (S1010). In FIG. 10, since there are four correct data items [5] to [8] (S1010: NO), it is determined whether the maximum value is updated (S1011).

Among the elements [1] to [10] before excluding the data with the maximum squared deviation, the maximum value is 650 ml of the element [10], but the element [10] is excluded as invalid data. The urine volume measuring device 1 determines to update the maximum value (S1011: YES). The urine volume measuring instrument 1 updates 417 ml of the element [8], which is the maximum value in the positive data, as a new maximum value (S1012). After updating the maximum value, the urine volume measuring device 1 returns to the process of S1001 in order to acquire the measurement data for the shortage.

FIG. 11 is a diagram showing a specific example of the measured urine volume calculation processing of the present embodiment. FIG. 11 shows that, in addition to the measurement data remaining after the calculation shown in FIG. 10, six pieces of data are extracted in order from the largest numerical value among the 20 pieces of data acquired through the processing of S1001 to S1005 in FIG. Then, a specific example of the processing after the total of 10 pieces of data is shown. The 10 pieces of data are illustrated as the urine volume in the elements [1] to [10], respectively.

In the first calculation shown in FIG. 11, the urine volume measuring instrument 1 calculates a standard deviation using 10 pieces of data (S1006: YES) (S1007). Since the standard deviation is 14.11 ml, it corresponds to the case where the standard deviation exceeds the threshold value of 10 ml (S1008: NO), the average value is 390.10 ml, and the square of the deviation is illustrated in the column to the right of each measurement data. It becomes a street. Since the data having the maximum square of the deviation is the element [1] with the square of the deviation=906.01, the element [1] is excluded from the data as invalid data (S1009).

In the second calculation of FIG. 11, the urine volume measuring device 1 uses the remaining 9 pieces of data (S1006: YES) excluding the element [1] that is the data that maximizes the square of the deviation to obtain the standard deviation. Is calculated (S1007). Since the standard deviation is 10.46 ml, it corresponds to the case where the standard deviation exceeds the threshold value of 10 ml (S1008: NO), the average value is 393.44 ml, and the square of the deviation is illustrated in the column to the right of each measurement data. It becomes a street. Since the data having the maximum square of the deviation is the element [10] with the square of the deviation=554.86, the element [10] is excluded from the data as invalid data (S1009).

In the third calculation of FIG. 11, the urine volume measuring device 1 uses the remaining eight data (S1006: YES) excluding the elements [1] and [10] that are the data with the maximum squared deviation. Then, the standard deviation is calculated (S1007). Since the standard deviation is 6.71 ml, it corresponds to the case where the standard deviation is within the threshold value of 10 ml (S1008: YES), and the process proceeds to the next process.

The urine volume measuring device 1 sets a data group having a standard deviation within a threshold value of 10 ml as positive data, and determines whether there are 10 positive data (S1010). In FIG. 11, the positive data is eight elements [2] to [9] (S1010: NO), and it is determined whether the maximum value is updated (S1011).

Of the elements [1] to [10] before excluding the data with the maximum squared deviation, the maximum value is 417 ml of the element [10], but the element [10] is excluded as invalid data. The urine volume measuring device 1 determines to update the maximum value (S1011: YES). The urine volume measuring device 1 updates 399 ml of the element [9], which is the maximum value in the positive data, as a new maximum value (S1012). After updating the maximum value, the urine volume measuring device 1 returns to the process of S1001 in order to acquire the measurement data for the shortage.

FIG. 12 is a diagram showing a specific example of the measured urine volume calculation processing of the present embodiment. In addition to the measurement data remaining after the calculation shown in FIG. 11, FIG. 12 extracts two data in order from the one with the largest numerical value among the 20 data acquired through the processing of S1001 to S1005 in FIG. Then, a specific example of the processing after the total of 10 pieces of data is shown. The 10 pieces of data are illustrated as the urine volume in the elements [1] to [10], respectively.

In the first calculation in FIG. 12, the urine volume measuring device 1 calculates the standard deviation using 10 pieces of data (S1006: YES) (S1007). Since the standard deviation is 6.78 ml, it corresponds to the case where the standard deviation is within the threshold value of 10 ml (S1008: YES), and the process proceeds to the next process.

The urine volume measuring device 1 sets a data group having a standard deviation within a threshold value of 10 ml as positive data, and determines whether there are 10 positive data (S1010). In FIG. 12, since the positive data is ten elements [1] to [10] (S1010: YES), for example, the average value of the positive data is confirmed as the result of the measurement urine volume calculation process (S1013), and the measurement urine The quantity calculation process ends. As shown in FIG. 12, the average value is 389.20 ml.

As described with reference to FIGS. 9 to 12, the measurement urine volume calculation process in the present embodiment calculates the standard deviation using a maximum of n pieces of data. In the measurement urine volume calculation process, it is possible to accumulate data estimated to be closer to the actual urine accumulation volume by repeating the measurement while leaving the positive data. Further, since the measured value is constantly changing, the frequency and number of times of measuring the extreme value may be different for each measurement, but the measured urine volume calculation processing in the present embodiment can reliably exclude incorrect data. Becomes Therefore, the measured urine volume calculation process in the present embodiment is clearly different from the process of simply excluding a plurality of values from the actually measured value.

FIG. 13 is a diagram comparing the urine volume measurement value acquired by the measurement urine volume calculation processing of the present embodiment with the urine volume measurement value acquired by the conventional method. FIG. 13 exemplifies the results of measuring the urine volume using the conventional urine volume measuring instrument and the urine volume measuring instrument 1 of the present embodiment. FIG. 13 shows raw data (without processing), a moving average value excluding two large values and three small values out of eight measurement data (hereinafter, referred to as “conventional method”), and the measurement of the present embodiment. The urine volume measurement value acquired by the urine volume calculation process (hereinafter, referred to as “new method”) is illustrated. The new method is N=20 (pieces), n=10 (pieces), and threshold value=10 (ml), and the acquisition condition is to update the maximum value in the positive data as a new maximum value. In FIG. 13, the vertical axis indicates the measured urine volume, the horizontal axis indicates the number of times of measurement (time change, 0.1 second/time), the raw data is a circle (uv0/plot0), the conventional method is a triangle (uv1/plot1), In the new method, urine volume measurement values are plotted by a square (uv2/plot2).

FIG. 13 shows the actual urine volume of 239 ml (the actual urine volume in the human body, which is measured by urination immediately after the urine volume measurement by the urine volume measuring device of the present invention). The measurement result when the measurement is performed a plurality of times is illustrated. In the raw data, although the actual urine volume is 239 ml, an outlier around 300 ml, which is estimated to be the influence of noise, is measured multiple times. The raw data can also confirm that the fluctuation range of the urine volume measurement value is particularly large. In the conventional method, the fluctuation range of the urine volume measurement value is smaller than the raw data, and the influence of sudden outliers can be reduced by the moving average value, but when continuously measuring the outliers, the influence of the outliers is reduced. It is possible to confirm the decrease in measurement accuracy due to. On the other hand, compared with the raw data and the conventional method, it can be confirmed that the new method has a measured value close to the actual urine volume, a small fluctuation range of the urine volume measured value, and a stable value that is not affected by noise.

FIG. 14 is a diagram comparing the urine volume measurement value acquired by the measurement urine volume calculation processing of the present embodiment with the urine volume measurement value acquired by the conventional method. FIG. 14 exemplifies the result of measuring the urine volume using the conventional urine volume measuring instrument and the urine volume measuring instrument of the present embodiment similarly to FIG. 13. In FIG. 14, as in FIG. 13, the vertical axis indicates the measured urine volume, the horizontal axis indicates the number of times of measurement (time change, 0.1 second/time), the raw data is a circle (uv0/plot0), and the conventional method is a triangle ( uv1/plot1), and the new method plots the urine volume measurement values by a square (uv2/plot2).

FIG. 14 illustrates the measurement result when the urine volume is small and the bladder is small. Generally, when the amount of urine is small and the bladder is small, it is difficult for the sensor to continuously capture the bladder, and the sensor is easily affected by noise. Since it is difficult for the sensor to continuously capture the bladder with the raw data, it can be confirmed that a large amount of measurement data with no reaction (=0 ml) is acquired. It can be confirmed that the conventional method is affected by the measurement data that does not respond like the raw data and the average value decreases. On the other hand, it can be confirmed that the new method has a smaller fluctuation range of the urine volume measurement value than the raw data and the conventional method and is not affected by the measurement data having no reaction. In addition, since the new method determines whether the maximum value is within the predetermined threshold of standard deviation, it is possible to exclude large measurement values and small measurement values including outliers due to noise. It is possible to stably measure and calculate the urine volume close to the volume.

13 and 14, the measurement results including a large amount of measurement values are illustrated for comparison, but the urine volume measuring device 1 of the present embodiment further acquires the measurement values when the measurement urine volume calculation process ends. No need. That is, when the measurement urine volume calculation process is completed and it is determined that the calculation of the urine volume has been completed (S11: YES in FIG. 7), the user of the urine volume measuring device 1 determines the timing of completion of the measurement. Instead, the measurement of the urine storage amount can be automatically completed.

In addition, some conventional urine volume measuring devices may be able to display the maximum urine volume and determine the maximum urine volume as the accumulated urine volume. However, as illustrated in FIG. 13 and FIG. 14, the maximum value of the raw data may be influenced by the procedure or noise, and therefore it is not appropriate to judge the urine storage amount only by the maximum value. In the measurement urine volume calculation processing of the present embodiment, the maximum value may be updated with the maximum value within the predetermined threshold value of the standard deviation, and measurement data closer to the true value can be accumulated.

The principle of the present invention has been described above with reference to the exemplary embodiments, but various embodiments with changes in configuration and details can be realized without departing from the gist of the present invention. That is, the present invention can adopt an embodiment as a system, a device, a method, a program, a storage medium, or the like.

1 Urine Volume Measuring Device 10

Probes

11a, 11b, 11c, 11d Probe Channel 20 Main Body 30 Display 40 Button 50 Speaker 60 Communication I/F (Interface)
100 control unit 110 ultrasonic wave control unit 120 A/D conversion unit 130 arithmetic unit 131 measurement unit 132 urine accumulation amount calculation unit 133 channel pattern acquisition unit 135 determination unit 136 scan determination unit 137 maximum value determination unit 138 urine accumulation amount level determination unit 140 storage Unit 150 display processing unit 160 voice processing unit 170 communication processing unit

Claims

Determines whether the standard deviation of multiple measurement data is within a predetermined threshold,
If the standard deviation is not within the predetermined threshold value, the measurement data having the maximum square of the deviation is excluded from the plurality of measurement data, and the standard deviation of the remaining plurality of measurement data is within the predetermined threshold value. Further determination of whether,
If the standard deviation is within the predetermined threshold, it is determined whether the plurality of measurement data is a predetermined number,
If the plurality of measurement data is not the predetermined number, the measurement data for the shortage is acquired, and further determination of whether the standard deviation is within a predetermined threshold value is performed,
When the plurality of measurement data is the predetermined number, the average value of the plurality of measurement data is calculated to specify the urine storage amount,
Urine meter with a processor configured as described above.
The plurality of measurement data is measurement data within a predetermined range from the maximum value,
The maximum value is updated by the maximum value of the plurality of measurement data when acquiring the measurement data of the shortage,
The urine volume measuring device according to claim 1.
The urine volume measuring device according to claim 1 or 2, wherein the processor is further configured to end acquisition of measurement data when the urine accumulation amount is specified.
The urine volume measuring device according to any one of claims 1 to 3, wherein the measurement data is a urine volume value obtained by an ultrasonic A mode.
The urine volume measuring device according to any one of claims 1 to 4, wherein the predetermined threshold value is 5 to 30 (ml).
A method for measuring urine volume performed by a urine volume measuring instrument, comprising:
The urine volume measuring device determines whether the standard deviation of a plurality of measurement data is within a predetermined threshold value,
If the standard deviation is not within the predetermined threshold, the urine volume measuring device excludes the measurement data having the maximum square of the deviation from the plurality of measurement data, and the standard deviation of the remaining plurality of measurement data is Further performing a determination as to whether it is within a predetermined threshold,
If the standard deviation is within the predetermined threshold, the urine volume measuring device determines whether the plurality of measurement data is a predetermined number,
When the plurality of measurement data is not the predetermined number, the urine volume measuring instrument acquires the measurement data of the shortage, and further executes the determination of whether the standard deviation is within a predetermined threshold value. ,
When the plurality of measurement data are the predetermined number, the urine volume measuring device calculates an average value of the plurality of measurement data to specify a urine storage amount, and a urine volume measuring method.
The plurality of measurement data is measurement data within a predetermined range from the maximum value,
The maximum value is updated by the maximum value of the plurality of measurement data when acquiring the measurement data of the shortage,
The urine volume measuring method according to claim 6.
The urine volume measuring method according to claim 6 or 7, further comprising terminating acquisition of measurement data when the urine volume is specified.
The urine volume measuring method according to any one of claims 6 to 8, wherein the measurement data is a urine volume value obtained by an ultrasonic A mode.
The urine volume measuring method according to any one of claims 6 to 9, wherein the predetermined threshold value is 5 to 30 (ml).
A program for causing a urine volume measuring device to carry out the method according to any one of claims 6 to 10.