WO2006115278A1

WO2006115278A1 - Organ shape measuring method and measuring device therefor, urination disorder countering system, and ultrasonic probe

Info

Publication number: WO2006115278A1
Application number: PCT/JP2006/308786
Authority: WO
Inventors: Jun Oyama; Tsuyoshi Higuchi; Takashi Abe; Salah Derrouich
Original assignee: Nagasaki University, National University Corporation
Priority date: 2005-04-25
Filing date: 2006-04-20
Publication date: 2006-11-02
Also published as: JP5228189B2; JPWO2006115278A1

Abstract

An organ shape measuring method capable of accurately measuring three-dimensionally the shape of an organ such as a bladder through a limited gap and a measuring device therefor, a urination disorder countering system, and a ultrasonic probe applicable to them. The measuring method uses a ultrasonic probe in which a plurality of sensors by ultrasonic vibrators are disposed, allows ultrasonic waves from respective sensors to penetrate through a gap in a body, e.g. a gap between a peritonea and a pubic bone in the case of bladder shape measuring and to spread by being overhead-crossed, and uses respective sensors to receive ultrasonic waves reflected off the front and rear walls of an organ to be measured, thereby measuring the 3-D shape of the organ. In the urination disorder countering system, a stored urine amount is measured from the 3-D shape of a bladder thus measured to inform the necessity of urination.

Description

" Specification

Organ shape measuring method and its measuring device, urination disorder countermeasure system, and ultrasonic probe

The present invention relates to a method for measuring the shape of an organ such as the bladder and the like, a measurement device therefor, a urination disorder countermeasure system, and an ultrasonic probe used for the week. In particular, for patients with urination disorder or urinary incontinence, when the shape of the bladder is measured to sense the amount of urine accumulated in the bladder (the amount of urine storage) and inform the person or carer of urination to promote urination. Apply to technologies that are suitable for Background art

For patients with urination disorder or urinary incontinence, there is a problem of whether or not dignified excretion is being performed, such as diapers and urination control, etc. Some moisture sensors have been known to be worn in diapers. But there is no change in being a coping treatment. The moisture sensor system detects that the patient's 3⁄4 is incontinence and the diaper gets wet, and uses a buzzer to notify the surroundings of the incontinence.

The first inventor has previously made use of ultrasonic waves in patent documents 1 and 2 to automatically measure urine accumulation a in the bladder periodically in the A mode, if there is a possibility of a ban. Proposed an incontinence prevention sensor that would prevent incontinence by

Further, in Patent Documents 3 and 4, a urination alarm device has been proposed which measures whether or not the amount of urine collected in the bladder is at the discharge level in A mode using acupuncture and moxibustion. Furthermore, in Patent Documents 5 and 6, in contrast to the devices proposed in Patent Documents 3 and 4, a wave probe for A mode using a flexible polymer-based piezoelectric element has been proposed. ing.

Also, as a practical application level, B ladder S canTM BV 16010 is sold by Syemex, and the intravesical volume is noninvasively measured by the B mode using ultrasound. Portable measuring device. In addition, portable urine volume monitoring devices are sold under the brand name “Yu-rin” from Takeshipa Electric. This device fixes the sensor section to the lower abdomen and measures the urine volume in the bladder intermittently to indicate the urination timing when it becomes a fixed value.

[Patent Document 1] Japanese Patent Application Laid-Open No. 6 3-3 1 1 9 5 2

[Patent Document 2] Japanese Patent Application Laid-Open No. 2 0 0 3 1 1 0 0 6 8

[Patent Document 3 3 Japanese Patent Application Laid-Open No. 7- 1 3 6 1 6 7]

[Patent Document 4] Japanese Patent Application Laid-Open No. 7 1 7 1 1 4 9

[Patent Document 5] Japanese Patent Application Laid-Open No. 2 0 0 1 3 7 3 8 4

[Patent Document 6] Japanese Patent Application Laid-Open No. 2 0 0 0-2 1 0 2 8 6

However, the sensor pad in the proposed stage of Patent Documents 1 and 2 is configured such that a plurality of ultrasonic transducers cover the lower abdomen in order to three-dimensionally capture the bladder shape, and the ultrasound is used to The number of effective transducers for capturing the shape of the bladder is reduced by the peritoneum, pubic bone, pelvis, etc. inside the human body, and it is possible to catch the bladder depending on the position of the observer. It will be difficult.

The ultrasonic probe used in the devices of Patent Documents 3 and 4 is configured by changing the irradiation angle with several ultrasonic transducers, and the ultrasonic waves are irradiated radially, and are blocked by the peritoneum and pubic bone, It is impossible to measure the bladder three-dimensionally and accurately. The ultrasound programs of Patent Documents 5 and 6 use the concept of the irradiation angle of ultrasound, and similar problems remain.

In addition, Sysme X's portable measuring device can be used by doctors, nurses and other people with knowledge and experience to measure urine volume as needed. These devices are expensive and are not designed to be worn at all times or used by patients themselves. In addition, the above-mentioned portable urine volume monitor uses the technology of Patent Documents 3 and 4 and therefore has the same problem. Disclosure of the invention

The present invention is an organ shape measuring method and apparatus for measuring the shape of an organ such as the bladder with high accuracy and three dimensional accuracy from a limited gap, a urination disorder countermeasure system, and an ultrasonic probe applicable to these. It is to provide a feeler.

An organ shape measuring method according to the present invention uses an ultrasonic probe in which a plurality of sensors by ultrasonic transducers are arranged, an ultrasonic wave from each sensor, an ultrasonic central axis transmitting through a gap in the body, It crosses at a part corresponding to the approximate center, spreads and emits so as to be directed to the back wall of the organ to be measured, and the ultrasonic waves reflected by the front wall and back wall of the organ are received by each sensor Measure the three-dimensional shape of the organ.

In a preferred embodiment of the organ shape measuring method according to the present invention, in the above-mentioned organ shape measuring method, ultrasonic waves are transmitted from the sensors of the ultrasonic probe through the space between the peritoneum and the pubic bone and emitted to the bladder. Ultrasonic waves reflected on the front and back walls of the bladder are received by each sensor to measure the three-dimensional shape of the bladder.

In the organ shape measuring apparatus according to the present invention, a plurality of sensors by ultrasonic transducers are arranged, and a central axis of ultrasonic waves emitted from each sensor transmits through a gap in the body and corresponds to a portion near the center of the gap The ultrasound probe is configured to point to the back wall of the organ to be crossed and measured at the intersection, transmission control means for sequentially transmitting a plurality of sensors of the ultrasound probe, and Signal processing means for receiving ultrasonic waves reflected by the front and back walls and calculating the positions of the front and back walls of the organ from the time difference of the received signals obtained to measure the three-dimensional shape of the organ It consists of In a preferred embodiment of the organ shape measuring device according to the present invention, in the above-mentioned organ shape measurement, each sensor of the ultra-old wave probe transmits ultrasonic waves from this sensor through the gap between the peritoneum and the pubic bone to obtain a bladder. It is placed in a space where you can measure the three-dimensional shape of the bladder.

The system for preventing urination disorders according to the present invention comprises a plurality of sensors by ultrasonic transducers, and the central axis of the ultrasonic wave emitted from each sensor penetrates the gap between the peritoneum and the pubic bone, and the approximate center of the gap is An ultrasound probe configured to cross and spread at a portion corresponding to the vicinity and directed to the back wall of the bladder, and a transmission control means for sequentially transmitting a plurality of sensors of the ultrasound probe; A signal processing means for measuring the three-dimensional shape of the bladder by calculating the positions of the front wall and the back wall of the bladder from the time difference of the received signals obtained by the sensor receiving ultrasonic waves reflected by the front wall and the back wall of the bladder. The amount of urine collected is measured from the measured three-dimensional shape of the bladder to indicate the need for urination.

The ultrasonic probe according to the present invention has a plurality of sensors by an ultrasonic transducer, and the central axis of the ultrasonic wave emitted from each sensor passes through the gap, and corresponds to the vicinity of the approximate center of the gap. The sensors are arranged in such a way that they cross three-dimensionally and point in three dimensions to the inside of the Buddha.

According to the method of measuring the organ shape according to the present invention, the ultrasonic waves emitted from the sensors of the ultrasonic probe pass through the gaps in the body and intersect and direct them to the back wall of the organ. Even if it passes through the gap, it can catch the back wall of the organ widely. Then, the ultrasonic waves reflected by the front and back walls of the organ are received by the sensor, and the position of the front and back walls of the organ can be determined from the time difference of the received signal, and the three-dimensional shape of the organ can be obtained. It can measure with high accuracy.

For example, when measuring the shape of the bladder, the ultrasound emitted from each sensor of the ultrasound probe passes through the gap between the peritoneum and the pubic bone and is close to the anterior wall of the bladder. It crosses and spreads by the side, and it is widely irradiated to the back wall of the bladder. The ultrasonic waves reflected by the front and back walls of the bladder can be measured by the sensor. It is possible to measure (estimate) accumulated urine volume by this bladder shape. It also becomes possible to reduce the measurement error due to the position of the subject. In addition, it can cope with the reduction of the gap between the peritoneum and pubic bone due to the reduction of the peritoneum seen in postoperative patients such as digestive organs.

According to the organ shape measuring apparatus according to the present invention, the ultrasonic wave is sequentially transmitted from the sensors of the above-described ultrasonic probe by the transmission control means, and the ultrasonic waves reflected from the wall and the back wall of the organ are detected by the sensor. Signal processing means receive the position of the front and back walls of the organ from the time difference of the received signal.

-The three-dimensional shape of the organ can be measured with high accuracy by computing o By using this measuring device, for example, the three-dimensional shape of the bladder is measured <accuracy, and the amount of urine storage is measured be able to.

According to the urination disorder countermeasure system according to the present invention, the three-dimensional shape of the bladder is measured by the above-described measurement device, and the amount of urine storage is measured to inform the need for urination, thereby making it possible for the patient or the carer. Can reduce the burden of

According to the ultrasonic probe according to the present invention, each sensor can

Since the ultrasonic waves are transmitted through the gap and intersected and spread to be directed to the inner detection surface, the detection surface is widely set up through the limited gap.

It is possible to irradiate the area with ultra-repulsive waves. The number of ultrasonic transducers is reduced compared to conventional sensor pads and ultrasonic waves, and accurate measurement can be performed.

·

You can set it. The ultrasound probe is preferably used weekly to measure the three-dimensional shape of the pancreas, eg, the bladder. Brief description of the drawing

FIG. 1 is a block diagram showing an embodiment of an ultrasonic probe according to the present invention o

Fig. 2A shows that the ultrasonic probe of the present invention was used to measure the three-dimensional shape of the bladder FIG. 2B is a block diagram showing the irradiation angles of the respective sensors of the ultrasound probe as viewed from the side. is there.

Fig. 3A is an operation drawing showing the operation state of the ultrasonic probe when viewed from above when the ultrasonic probe of the present invention is used for measuring the three-dimensional shape of the bladder, and Fig. 3B is a drawing. FIG. 7 is a configuration diagram showing an illumination angle of each sensor of the ultrasound probe as viewed from above.

FIG. 4 is a block diagram showing an embodiment of the urination disorder countermeasure system according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, an embodiment of an ultrasound probe according to the present invention will be described. FIGS. 1 to 3 show an embodiment of an ultrasonic probe according to the present invention developed for measuring the three-dimensional shape of the bladder. As shown in FIG. 1, the ultrasound probe 1 of the present embodiment is configured by two-dimensionally arranging sensors 3 by a plurality of ultrasound transducers on one surface of a support base 2. In this example, 12 ultrasonic transducers 3 [3 A, 3 B, 3 C, 3 D, 3 E, 3 F, 3 G, 3 H, 31, 3 J, 3 K, 3 L] are used. They are regularly arranged at equal intervals so as to be 4 × 3. Each of these sensors 3 [3 A to 3 L] is disposed at a required angle so as to emit ultrasonic waves in different directions.

In order to accurately capture the bladder 5 from the surface of the lower abdomen, as shown in FIG. 2A, it is necessary to apply ultrasonic waves from the limited gap 8 between the peritoneum 6 and the pubic bone 7. In the ultrasonic probe 1 of the present embodiment, the central axes 9 A to 9 L of the ultrasonic waves from the respective sensors 3 A to 3 L passing through the gap 8 correspond to the vicinity of the approximate center of the gap 8, for example It crosses near the front wall 5A of the bladder 5, ie, crosses without crossing each other, and then spreads (spreads) to the back wall 5B of the bladder 5 Thus, the irradiation angle of each sensor 3 (that is, the ultrasonic wave irradiation surface) is set. The irradiation angle will be described later.

The ultrasound probe 1 can be formed, for example, in a larger area than the area of the gap 8 between the peritoneum 6 and the pubic bone 7 as shown in FIG. 2A. It is desirable that the lower end (bottom end) of the support base 2 on the 3 K, 3 L side be attached to the lower abdominal surface so that it corresponds to the upper end of the pubic bone 7. In this ultrasonic probe 1, as shown in FIGS. 2A and 3A, the sensor 3 on the upper side captures the bottom of the bladder from the lower side of the bladder rear wall 5B, and the sensor 3 on the lower side The right sensor 3 captures the left side of the bladder back wall 5 B from the back wall 5 B of the bladder, and the left sensor 3 captures the right side of the bladder back wall 5 B. The irradiation angle of each sensor is set and Ό can be set.

An example of the irradiation angle of each sensor 3 [3 A to 3 L) is shown in FIG. 2 B and FIG. 3

Shown in B. Fig. 2B is a side view of the ultrasonic probe 1 corresponding to Fig. 2A, and for convenience, the sensor of the central vertical line [3

B, 3 E, 3 H, 3 K] and the sensor on the left vertical line [3 A, 3

D, 3 G, 3 J and sensors on the right vertical line [3 C, 3 F, 3

I, 3] was drawn on one support substrate 2. The ultrasonic waves of each sensor 3 are all emitted to the right in FIG. 2B.

Fig. 3B shows the ultrasonic probe 1 viewed from the top as shown in Fig. 3A, and for convenience, the sensors of the first horizontal line from the top [3 A, 3 B, 3 C], the second stage horizontal line sensor [3 D, 3 E, 3 F] and the third stage horizontal line sensor [3 G, 3 H, 3 1], and the fourth stage horizontal line Sensors (3 J, 3 K, 3 L) were drawn on one support substrate 2. The ultrasonic waves of each sensor 3 are all irradiated upward in FIG. 3A.

In each sensor 3, electrodes are formed on both sides of an ultrasonic transducer, that is, a piezoelectric element, and a voltage is applied between the electrodes to vibrate the piezoelectric element. Then, ultrasonic waves are emitted, and conversely, when ultrasonic waves are received, a voltage is induced from between the two electrodes. For example, as shown in FIG. 1, the sensor 3 is formed in a circular thin plate. Each sensor 3 is supported on the support base so that the angle can be freely changed.

As shown in FIG. 1, the ultrasonic probe 1 has, for example, a plurality of sensors 3 arranged in a rectangular box-shaped support base 2 whose upper surface is open, but it is not shown but is not shown.

In order to prevent large reflections of ultrasonic waves due to differences in impedance, sensor 3 is embedded with a filler that has the role of layering, and super standing

Use a gel like gel so that there is no air between the probe 1 and the lower abdomen.

The above-mentioned ultrasound probe 1 can be used, for example, as a probe for bladder shape search for estimating the amount of urine storage. This ultrasound probe

1 is used in the A mode type, which emits ultrasonic waves one by one while scanning each sensor 3 ί 3 A to 3 L] sequentially. In the case of bladder shape measurement, any sensor capable of emitting an ultrasonic wave of about 1 M Hz to 5 M H z may be used as the sensor 3.

In the ultrasound probe 1 according to the present embodiment, as shown in FIGS. 2A and 3A, when each sensor 3 is attached to the lower abdomen and sequentially driven, the super The sound waves penetrate the limited gap 8 between the peritoneum 6 and the pubic bone 7 and are irradiated into the body. At this time, the ultrasonic wave irradiation surface of each sensor 3 [3 A to 3 L] is arranged near the front wall 5 A of the bladder 5 and near the approximate center of the gap 8. The ultrasonic waves from each sensor 3 A to 3 L are sterically crossed near the front wall 5 A of the bladder 5 and near the approximate center of the gap 8, and then spread and widely irradiated on the back wall 5 B of the bladder 5 Ru. The ultrasonic waves reflected by the front wall 5 A and the rear wall 5 B of the bladder 5 are received by the sensor 3, and the sensor 3 detects received signals corresponding to the positions of the front wall and the rear wall.

According to the ultrasound probe 1 described above, the bladder 8 is Ultrasonic waves can be applied extensively to the back wall 5 B of 5. In addition, the number of sensors can be reduced compared to conventional sensor pads and ultrasonic probes, enabling accurate measurement. The ultrasound probe 1 is suitable for measurement of the three-dimensional shape of an organ, for example, a bladder.

Next, the bladder shape measuring method and the measuring device according to the embodiment of the present invention, which are applied to urination management for patients with urination disorder including urinary incontinence, will be explained about the urination disorder countermeasure system using these Do. In this embodiment, the above-mentioned ultrasonic probe is used.

FIG. 4 shows an example of the urination disorder countermeasure system of the present embodiment. The urination disorder countermeasure system 2 1 according to the present embodiment is a bladder shape measuring device 2 2 including the above-described ultrasound probe 1 attached to the lower abdomen of a patient (note that the ultrasound transducer 1 for convenience in drawing. And the urine volume determination means 2 3 to determine the urine volume level by estimating the urine storage volume from the bladder shape obtained by the bladder shape measuring device 22 and the need for urination according to the urine storage volume The notification means 2 and 4 are provided.

The bladder shape measuring device 2 2 comprises an ultrasonic probe 1 having a plurality of sensors 3, a transmission control means 4 1 for transmitting a plurality of sensors 3 of the ultrasonic probe 1 sequentially, and a front of the bladder 5. The ultrasound reflected by the wall 5 A and the back wall 5 B is received by the sensor 3, and the positions of the front wall 5 A and the back wall 5 B of the bladder 5 are calculated from the time difference of the received signals obtained. It comprises signal processing means 42 for measuring a three-dimensional shape.

That is, each sensor 3 [3 A to 3 L] of the ultrasound probe 1 is connected to the ultrasound transmission amplifier 32 and the ultrasound reception amplifier 3 3 via the multiplexer 3 1. In addition, a transmission command circuit 3 4 for outputting a transmission command sequentially to a plurality of sensors 3 is connected to the ultrasonic wave transmission amplifier 3 2. The ultrasonic wave transmission amplifier 32 has a function of amplifying the signal from the transmission command circuit 34 and raising it to electric energy sufficient to transmit ultrasonic waves. Do. The ultrasound receiving amplifier 3 3 has a function of amplifying the received weak electrical signal. The multiplexer 3 1 is located between the sensor 3 and the ultrasonic transmitting amplifier 32 and the ultrasonic receiving amplifier 3 3, and sequentially connects between each sensor 3 and the amplifiers 3 2 and 3 3. It has a function to operate all sensors 3 sequentially with the pump.

The ultrasonic wave receiving amplifier 33 and the transmission command circuit 34 are connected to the signal processing circuit 35. The signal processing circuit 35 selects only the sensor 3 that has received the ultrasonic wave reflected by the bladder based on the time difference between the transmission signal of the transmission command circuit 34 and the reception signal from the ultrasonic wave reception amplifier 33. The position of the front wall 5 A and the position of the back wall 5 B of the bladder 5 are calculated from the time difference at the sensor, and the spatial coordinates of the sensor 3 and the information of the line vector are used together to obtain the bladder wall surface. Mapping. The solid shape of the bladder 5 is determined by performing the same operation on the transmitted and received signals of all the sensors 3.

From the data of the three-dimensional shape of the bladder 5 obtained by the signal processing circuit 35, a urine flow determining circuit 23 is provided which measures (estimates) urine volume in the bladder and determines whether urination is necessary. In addition, the urine volume determination circuit 2 3 is connected to notification means 2 4 for notifying when the urine volume exceeds a predetermined risk value or when the urine volume incontinence has been exceeded in the past. Be done. The notification means 2 4 can be configured by alarm means by sound (including sound), light, or vibration, or lamp display means. It can also be configured so that the measured three-dimensional shape of the bladder 5 can be observed by a monitor.

Next, a bladder shape measurement method will be described using the above-described bladder shape measurement device of the present embodiment, and the operation of the above-described urination disorder countermeasure system will be described.

The ultrasonic wave is sequentially transmitted from the multiple sensors 3 of the ultrasonic probe 1 through the gap between the peritoneum and the pubic bone based on the transmission command from the transmission command circuit 34. It is irradiated to 5 side. The ultrasound is reflected by the front wall 5 A and the back wall 5 B of the bladder and is received by the same sensor 3. In the signal processing circuit 35, only the sensor 3 which has received the reflected ultrasound at the bladder is selected based on the time difference between the transmission signal of the transmission command circuit 3 4 and the reception signal from the ultrasonic receiving amplifier 33. Further, the positions of the front wall 5A and the rear wall 5B of the bladder are calculated from the time difference of the received signal at the selected sensor 3, and the spatial coordinates of the sensor 3 and the information of the normal spectrum thereof are combined. By mapping the bladder wall surface, the three-dimensional shape of the bladder described above is measured as a result.

Then, from the data of the three-dimensional shape of the bladder 5, the urine storage amount is measured (estimated) in the urine volume determination circuit 23. At the same time, the urine storage amount required for urination (so-called discharge level storage amount) has been reached. The decision is made. If the urine volume has reached a dangerous value in the urine volume determination circuit 2 3, notify the patient or the carer, or a person, a nurse, through the notification means 2 4 to prevent urination disorder including incontinence. To prevent.

According to the bladder shape measuring method of this embodiment and the measuring device thereof, ultrasonic waves from the sensor 3 are transmitted to the peritoneum 6 by sequentially driving the plurality of sensors 3 using the above-mentioned ultrasonic probe 1. By irradiating the back wall 5 B of the bladder 5 extensively through the limited gap (narrow space) 8 between the pubes 7, the sensor 3 receives ultrasonic waves reflected by the bladder wall and processes the signal. , The three-dimensional shape of the bladder can be measured with high accuracy. It is possible to measure (estimate) the accumulated urine volume by this bladder shape. It also makes it possible to reduce the measurement error due to the patient's posture. It also responds to the reduction of the gap between the peritoneum and pubic bone due to the drop of the peritoneum seen in postoperative patients such as digestive organs. Further, according to the urination disorder countermeasure system including the incontinence prevention according to the present embodiment, the bladder shape measurement method including the above-mentioned ultrasonic probe 1 and the apparatus are used, and therefore the accuracy is improved. Measure the amount of urine storage, When the urine level of the discharge level is reached, the patient, the caretaker, or the nursing room can be notified, and the patient can be urged to urinate with ease and can urinate. Since this urination disorder countermeasure system has a simpler configuration than before, cost burden can be reduced. In the present invention, a urine volume measuring device using the above-mentioned system, a measuring device having an internal CPU for measuring and processing data from sensor 3, and a bladder shape and urine accumulation estimation algorithm are developed and executed. It can be configured from the console. In the above example, the present invention is applied to the bladder shape measurement method and the measurement device thereof, but it is also possible to apply to the shape measurement method and the measurement device of the organ meeting the other measurement conditions.

Claims

The scope of the claims

1. Using an ultrasonic probe in which a plurality of sensors by ultrasonic transducers are arranged, ultrasonic waves are transmitted from each of the sensors, and an ultrasonic central axis passes through a gap in the body and corresponds to the vicinity of the approximate center of the gap The radiation is directed to the back wall of an organ to be measured crossing at a part, and ultrasonic waves reflected by the front wall and the back wall of the organ are received by the sensors, and the organ is transmitted. A method of measuring organ shape characterized by measuring the three-dimensional shape of

2. Ultrasonic waves are transmitted from the sensors of the ultrasonic probe through the gap between the peritoneum and the pubic bone and emitted to the bladder, and the ultrasonic waves reflected by the front wall and the rear wall of the bladder are received by the sensors The organ shape measuring method according to claim 1, wherein the three-dimensional shape of the bladder is measured.

3. A plurality of sensors by ultrasonic transducers are arranged, and the central axis of the ultrasonic wave emitted from each of the sensors passes through a gap in the body and intersects and spreads at a portion corresponding to the approximate center of the gap. An ultrasonic probe configured to be directed to the back wall of the organ to be measured, a transmission control means for sequentially transmitting a plurality of sensors of the ultrasonic probe, a front wall and a rear wall of the organ And signal processing means for measuring the three-dimensional shape of the organ by calculating the position of the front wall and the back wall of the organ from the time difference of the received signal obtained by receiving the ultrasonic wave reflected by An organ shape measuring device characterized by

4. Each sensor of the ultrasonic probe is disposed so as to emit ultrasonic waves from the sensor through the gap between the abdominal membrane and the pubic bone to the bladder, and measure the three-dimensional shape of the bladder. The organ shape measuring device according to claim 3, wherein the range of the claim is characterized by comprising.

5. A plurality of sensors by ultrasonic transducers are disposed, and the central axis of the ultrasonic wave emitted from each of the sensors passes through the gap between the peritoneum and the pubic bone and intersects at a portion corresponding to the approximate center of the gap. An ultrasound probe configured to be three-dimensionally extended and directed to the back wall of the bladder; Transmission control means for sequentially transmitting a plurality of sensors of the acoustic probe, ultrasonic waves reflected by the front wall and the back wall of the bladder described above are received by the sensor, and the time difference of the received signals obtained And signal processing means for measuring the three-dimensional shape of the bladder by calculating the position of the back wall, and measuring the accumulated urine volume from the measured three-dimensional shape of the bladder to indicate the need for urination. Countermeasure system.

6. A plurality of sensors by ultrasonic transducers are arrayed, and in the m sd valley sensor, the central axis of the ultrasonic wave emitted from each sensor passes through the gap, and intersects at a portion corresponding to the approximate center of the gap. The ultrasound probe is characterized in that it is three-dimensionally spread and oriented so as to be directed to the inner detection surface.

7. A plurality of sensors by an ultrasonic transducer are arranged, and in each of the sensors, the central axis of the ultrasonic waves from each sensor passes through the gap between the peritoneum and the pubic bone, and corresponds to the vicinity of the approximate center of the gap An ultrasound probe characterized in that the ultrasound probe is arranged so as to intersect at a part and to be directed three-dimensionally to the back wall of the bladder.