WO2016147760A1

WO2016147760A1 - Diaper

Info

Publication number: WO2016147760A1
Application number: PCT/JP2016/053930
Authority: WO
Inventors: 亮平大森; 加藤　千晴; 吉朗前田
Original assignee: 株式会社村田製作所
Priority date: 2015-03-13
Filing date: 2016-02-10
Publication date: 2016-09-22
Also published as: JP2018068321A

Abstract

Provided is a low-cost diaper (10) that accurately detects urine. The diaper (10) according to the present invention is provided with a liquid-permeable inner sheet (11), an outer sheet (12), an absorbent body (13) disposed between the inner sheet (11) and the outer sheet (12), and an excreta detection element (20) that detects excreta. On the inner sheet (11) side of the absorbent body (13) is a concave portion (14) which allows excreta to flow therealong. The excreta detection element (20) is disposed in the concave portion (14).

Description

Diapers

The present invention relates to a diaper that detects excrement using an excretion detection element.

In recent years, various diapers that detect excrement using an excretion detection element have been proposed. For example, Patent Literature 1 discloses a diaper having an electrode and a battery that generates electricity using urine and a transmission unit that transmits a signal to the communication unit using electricity generated by the battery. ing. The diaper described in Patent Document 1 uses the urine excreted by the diaper user to generate power in the diaper, and transmits a signal to the communication unit by the transmission means to notify that the excretion has occurred.

Patent Document 2 discloses a diaper having a plurality of elements that stop the transmission function when excrement is detected. The diaper of patent document 2 can detect excretion even when the excretion position shifts by using a plurality of elements.

JP 2006-349418 A JP 2006-201029 A

In the configuration of the diaper disclosed in Patent Document 1, there is a problem that if the excretion position is shifted, the excrement does not come into contact with the electrode, and the excrement may not be detected.

In the configuration of the diaper disclosed in Patent Document 2, a plurality of detection elements are provided to detect the excretion of the diaper user with high accuracy.

This invention solves said subject, and aims at providing the diaper which reduced the cost while detecting the excretion correctly.

The diaper of one aspect of the present invention is
An inner sheet that is permeable to liquid;
An outer sheet,
An absorber disposed between the inner sheet and the outer sheet;
An excretion detection element for detecting excrement;
With
The absorber has a recess for flowing excrement on the inner sheet side,
The excretion detection element is disposed in the recess.

According to the present invention, it is possible to provide a diaper capable of accurately detecting excrement and reducing costs.

The schematic block diagram at the time of seeing the diaper of Embodiment 1 which concerns on this invention from the top AA line sectional view of the diaper of FIG. 1 is a schematic configuration diagram of an excretion detection element according to Embodiment 1 of the present invention. The figure which shows the usage example of the diaper of Embodiment 1 which concerns on this invention Flowchart of diaper replacement according to the first embodiment of the present invention Flowchart of diaper replacement using a handy type reader / writer in the first embodiment of the present invention The schematic block diagram at the time of seeing the diaper of Embodiment 2 which concerns on this invention from the top Modified diaper pads of Embodiments 1 and 2 according to the present invention BB sectional view of the diaper pad in FIG.

The diaper of one aspect of the present invention is
An inner sheet that is permeable to liquid;
An outer sheet,
An absorber disposed between the inner sheet and the outer sheet;
An excretion detection element for detecting excrement;
With
The absorber has a recess for flowing excrement on the inner sheet side,
The excretion detection element may be disposed in the recess.

With such a configuration, when the diaper user excretes, the excrement flows into the concave portion of the absorber, and therefore the excretion can be reliably detected by the excretion detecting element disposed in the concave portion. Moreover, the diaper of this invention can implement | achieve reduction of a cost by reducing the number of excretion detection elements by arrange | positioning an excretion detection element in the recessed part which flows excretion.

The recess may be a groove extending in the longitudinal direction of the absorber.

With such a configuration, since the excrement flows along the groove extending in the longitudinal direction, the excrement can be easily guided to the excretion detecting element. Therefore, the excrement can be detected accurately.

The excretion detection element may be disposed in a recess provided in the crotch part.

Such a configuration can make it easier to detect excrement excreted in the crotch part of the diaper.

The excretion detection element may be disposed in a recess provided in at least one of the ventral portion and the dorsal portion.

Such a configuration makes it possible to reliably detect excrement regardless of the state of the diaper user, for example, the state of the diaper user sleeping.

The excretion detection element may be disposed at an end of the concave portion in the longitudinal direction.

Such a configuration makes it possible to reliably detect excrement and to detect the use limit of the diaper regardless of the state of the diaper user.

The excretion detection element,
A wireless IC chip;
A matching circuit connected to the wireless IC chip and having a predetermined resonance frequency;
A radiation electrode connected to the matching circuit;
With
The matching circuit may be located in the recess.

With such a configuration, since the excrement flowing through the recess comes into contact with the matching circuit of the excretion detection element, it is possible to detect the excretion more reliably.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In each drawing, each element is exaggerated for easy explanation.

(Embodiment 1)
[overall structure]
FIG. 1: shows schematic structure at the time of seeing the diaper of Embodiment 1 which concerns on this invention from the top. In FIG. 1, symbols L1, L2, and L3 respectively correspond to the abdomen portion, the crotch portion, and the dorsal portion of the diaper user. The X direction in FIG. 1 indicates the longitudinal direction, and the Y direction indicates the width direction. FIG. 2 is a sectional view taken along line AA of the crotch portion L2 in the diaper 10A of FIG. As shown in FIG.1 and FIG.2, the diaper 10A of Embodiment 1 detects the excrement, the inner sheet | seat 11 which permeate | transmits a liquid, the waterproof outer sheet | seat 12, the absorber 13 which absorbs excrement, And an excretion detecting element 20. Moreover, in Embodiment 1, the diaper 10A is provided with the tape 16 for mounting | wearing the gather 15 which prevents the leakage of excrement, and the diaper 10A.

The inner sheet 11 is a sheet that forms an inner area of the diaper 10A that comes into contact with the body of the diaper user. The inner surface sheet 11 is made of a material that allows liquid to pass through. When the diaper user excretes, the urine, which is excreted, is quickly fed into the absorber 13. For example, the inner surface sheet 11 is made of polyester or polypropylene nonwoven fabric.

The outer surface sheet 12 is a waterproof sheet that covers the outside of the diaper 10A, that is, a sheet that does not transmit liquid. The outer surface sheet 12 is made of a material having air permeability so as not to leak urine but to release water vapor to the outside. The outer sheet 12 covers the inner sheet 11 and the absorber 13 and prevents the excrement from leaking.

The absorber 13 absorbs excrement such as urine. The absorber 13 is disposed between the inner sheet 11 and the outer sheet 12. The absorber 13 is arranged so as to extend in the X direction, which is the longitudinal direction, from the ventral part L1 of the diaper 10A through the crotch part L2 to the back part L3. The absorber 13 has, for example, a substantially rectangular shape, and a concave portion 14 is provided on the side in contact with the inner surface sheet 11. The absorber 13 is configured by combining, for example, water-absorbing paper, linear pulp, polymer water-absorbing material, and the like.

The recess 14 is a groove for flowing excrement. In the first embodiment, the recess 14 is a linear groove extending in the longitudinal direction of the absorber 13. The recess 14 extends from the ventral part L1 of the diaper 10A through the crotch part L2 to the back part L3 in the X direction of FIG. The recess 14 functions as a flow path that guides urine to the entire absorbent body 13 when the diaper user excretes, and suppresses the excrement from concentrating on a specific portion of the absorbent body 13. Further, the recess 14 speeds up the absorption of urine into the absorber 13 and suppresses the urine from leaking out of the diaper 10A.

The excretion detection element 20 is an element that detects excretion when communication with the excrement becomes impossible due to contact with the excretion. In the first embodiment, when communication between an external device such as a reader / writer and the excretion detection element 20 becomes impossible, it is detected that the diaper user has excreted. As shown in FIG. 1, the excretion detection element 20 is disposed at the center of the recess 14 provided in the crotch portion L2 of the diaper 10A. Moreover, the excretion detection element 20 is arrange | positioned on the inner surface sheet | seat 11 arrange | positioned at the bottom part of the recessed part 14, as shown in FIG.

The excretion detection element 20 will be described in detail with reference to FIG. FIG. 3 shows a schematic configuration of the excretion detection element 20. As shown in FIG. 3, the excretion detection element 20 includes a wireless IC chip 21, a matching circuit 22, and a radiation electrode 23.

The wireless IC chip 21 is a passive type that does not incorporate a battery, and processes transmission / reception signals of a predetermined frequency. The wireless IC chip 21 is electrically connected to the matching circuit 22. In the first embodiment, the wireless IC chip 21 uses an RFIC chip.

The matching circuit 22 includes an inductor and a capacitor, and constitutes a resonance circuit having a predetermined resonance frequency. The matching circuit 22 is for impedance matching between the wireless IC chip 21 and the radiation electrode 23, and is connected to both the wireless IC chip 21 and the radiation electrode 23.

The radiation electrode 23 is an antenna that receives a signal from the outside such as a reader / writer and radiates a signal from the wireless IC chip 5. The radiation electrode 23 is connected to the matching circuit 22 in an electrically conductive state. In the first embodiment, the radiation electrode 23 is a dipole antenna.

As shown in FIG. 1, the excretion detection element 20 is disposed in the recess 14 of the absorbent body 13 provided in the crotch portion L2 of the diaper 10A. As described above, the recess 14 functions as a flow path that guides urine in the longitudinal direction of the absorber 13 so that urine does not concentrate at a specific location. Therefore, when the diaper user urinates in the diaper 10 A, urine flows into the recess 14, and the urine and the excretion detection element 20 are reliably in contact with each other. As described above, the excretion detection element 20 is disposed in the concave portion 14 that is easily in contact with urine, so that when the diaper user excretes, the excretion can be reliably detected and the excretion can be detected. .

The excretion detection element 20 is preferably arranged so that the wireless IC chip 21 and the matching circuit 22 are located in the recess 14. In particular, it is preferable that the matching circuit 22 is disposed in the concave portion 14 where the matching circuit 22 is easily in contact with urine. For example, in the excretion detection element 20 of the first embodiment, as shown in the area A1 in FIG. 3, the excretion detection element 20 is such that the region of the junction between the matching circuit 22 and the radiation electrode 23 is in contact with urine. Is preferably disposed in the recess 14. By making urine contact the area A1 shown in FIG. 3, the excretion detection element 20 can be more reliably brought into a state where communication is impossible. In addition, the area | region of A1 shown in FIG. 3 has shown in the case of Embodiment 1 the position where communication becomes impossible by contact of urine as an example. The contact position of urine that makes it impossible for the excretion detection element 20 to communicate varies depending on the shape of the radiation electrode 23 and the configuration of the matching circuit 22.

FIG. 4 shows an example of a system using the diaper 10A. As shown in FIG. 4, the system using the diaper 10 A includes a diaper 10 A, a reader / writer 31, a transmission unit 32, and a communication module 33.

The reader / writer 31 communicates with the excretion detection element 20 of the diaper 10A. The transmission unit 32 transmits a signal to the communication module 33. The communication module 33 receives a signal from the transmission unit 32 and notifies the caregiver that excretion has occurred. Although not shown, these elements are controlled by a control unit such as a computer.

When the excretion detecting element 20 of the diaper 10A is not in contact with the excrement, the excretion detecting element 20 can communicate with the reader / writer 31 that is an external device. Therefore, the reader / writer 31 can read a signal from the excretion detection element 20. In this case, the reader / writer 31 can determine that the diaper user is not excreting. On the other hand, when the excretion detection element 20 comes into contact with excretion, the excretion detection element 20 is in a state where communication is impossible. Therefore, the reader / writer 31 cannot read the signal from the excretion detection element 20. In this case, the reader / writer 31 determines that the diaper user has excreted, and transmits a signal to the communication module 33 via the transmission unit 32. The communication module 33 is, for example, a smartphone or a controller. The communication module 33 can inform the caregiver that the diaper user has excreted by displaying diaper replacement or the like.

Next, a usage example of the diaper 10A will be described with reference to FIG. FIG. 5 shows a replacement flowchart of the diaper 10A.

As shown in FIG. 5, in step ST11, the excretion detecting element 20 of the diaper 10A and the reader / writer 31 are paired. In step ST11, the reader / writer 31 performs settings for identifying the diaper 10A.

In step ST12, the reader / writer 31 reads the signal from the excretion detection element 20. In step ST12, the reader / writer 31 confirms that the excretion detection element 20 can communicate.

Step ST13 determines whether or not a predetermined time has elapsed since the previous reading by the reader / writer 31. The predetermined time is, for example, about 30 seconds. In step ST13, when a predetermined time has passed since the previous reading, the flow proceeds to step ST14. On the other hand, if the predetermined time has not elapsed since the previous reading, the flow is waited and step ST13 is performed again.

In step ST14, the reader / writer 31 reads the signal from the excretion detecting element 20 again. In step ST14, it is confirmed whether the signal of the excretion detection element 20 can be read by the reader / writer 31.

Step ST15 determines whether or not the excretion detection element 20 can communicate. In step ST15, when it is determined that the excretion detection element 20 can communicate, the process returns to step ST13. On the other hand, when it determines with the excretion detection element 20 being incommunicable, it progresses to step ST16.

In step ST16, the transmission unit 32 transmits a signal to the communication module 33. In step ST16, a message or the like is displayed by the communication module 33 to inform the caregiver that the diaper user has excreted. Thereby, the caregiver can exchange diapers.

[effect]
According to the diaper 10A according to Embodiment 1, the following effects can be achieved.

In the diaper 10A according to Embodiment 1, the excretion detection element 20 is disposed in the recess 14 provided in the absorber 13. With such a configuration, since the concave portion 14 guides excrement to the excretion detection element 20, urine can be reliably detected by the excretion detection element 20. Moreover, according to the diaper 10A, since the number of the excretion detection elements 20 can be reduced while reliably detecting urine, the cost can be reduced.

In the diaper 10 A, urine can be detected more reliably by arranging the excretion detection element 20 so that the matching circuit 22 is positioned in the recess 14.

According to the system including the diaper 10A of the first embodiment according to the present invention, when the diaper user performs excretion, the caregiver can be notified that the diaper needs to be changed. Therefore, in such a system, work such as confirmation of diaper replacement can be reduced, and the burden on the caregiver can be reduced.

In the first embodiment, the concave portion 14 has been described by taking one linear groove extending in the longitudinal direction as an example. However, the present invention is not limited to this. The recess 14 may include a plurality of grooves. For example, the concave portion 14 may have various shapes such as a lattice shape.

Moreover, in Embodiment 1, although the structure which does not contain the absorber 13 in the bottom part of the recessed part 14 was demonstrated, it is not limited to this. For example, the absorber 13 may be included in the bottom of the recess 14.

In Embodiment 1, although the excretion detection element 20 is arrange | positioned in the recessed part 14 of the crotch part L2 of 10 A of diapers, it is not limited to this. The excretion detection element 20 only needs to be disposed in the recess 14 of the absorber 13. Further, the excretion detection element 20 is not limited to one, and a plurality of excretion detection elements 20 may be arranged.

Moreover, although the excretion detection element 20 is arrange | positioned on the inner surface sheet 11 in the recessed part 14, it is not limited to this. For example, the excretion detection element 20 may be disposed inside the inner sheet 11 in the recess 14.

In addition, the excretion detection element 20 is an element that can communicate with the reader / writer 31 when communication with the urine is temporarily lost and communication becomes impossible after that when the contact with the urine is lost. May be. For example, when the first urination is performed, the excretion detection element 20 is temporarily unable to communicate by contacting the urine flowing through the recess 14. However, when urine is absorbed by the absorber 13, the urine in the recess 14 is reduced, and the excretion detection element 20 does not come into contact with urine, so that communication is restored. Next, when the second urination is performed, the excretion detection element 20 again comes into contact with the urine flowing through the recess 14 and communication is impossible. In the second urination, since the urine that could not be absorbed by the absorber 13 remains in the recess 14, the excretion detection element 20 continues to be in an incommunicable state. The use limit of the diaper 10A may be determined by using such an element. The use limit means, for example, a state where the absorber 13 absorbs urine substantially to the maximum. For example, the diaper 10 A may determine that the use limit of the diaper has been reached if the excretion detection element 20 is not communicable even after a predetermined time has elapsed. Thereby, since the caregiver can know the use limit of 10 A of diapers easily, it can reduce the frequency of diaper replacement | exchange.

Moreover, although the excretion detection element 20 demonstrated the example which becomes impossible to communicate by contact with urine, it is not limited to this. For example, the excretion detection element 20 may detect urine in the vicinity of the element without coming into contact with urine. The excretion detection element 20 generates electric power by the radio wave or magnetic field received from the reader / writer 31 and performs necessary processing. Then, the excretion detection element 20 returns the data in the excretion detection element 20 to the reader / writer 31 on the radio wave or magnetic field. Yes. Therefore, when urine is present in the vicinity of the excretion detection element 20, that is, in the data return path between the element and the reader / writer 31, when data is returned from the excretion detection element 20 to the reader / writer 31, the excretion detection element 20 The transmitted power level is reduced. The excretion detection element 20 may detect urine in the vicinity of the element by detecting a decrease in the power level. In addition, the excretion detection element 20 may be an element that can communicate by contacting urine.

In Embodiment 1, the dipole antenna has been described as the radiation electrode 23, but the present invention is not limited to this. For example, the radiation electrode 23 may be a monopole antenna.

In the first embodiment, the excretion detection element 20 has been described as an example in which the matching circuit 22 cannot communicate with the urine, but is not limited thereto. For example, when the excretion detection element 20 is in contact with a large amount of urine, the excretion detection element 20 becomes incapable of communication when the matching circuit 22 does not contact with urine and the radiation electrode 23 comes into contact with urine. There may be.

In Embodiment 1, the configuration in which the reader / writer 31 transmits a signal to the communication module 33 using the transmission unit 32 has been described, but the present invention is not limited to this. For example, the reader / writer 31 may be a handy type reader / writer. The caregiver periodically visits the diaper 10 A with the handy type reader / writer and reads the excretion detection element 20 to detect whether the reader / writer can communicate with the excretion detection element 20. Good.

Diaper replacement using a handy type reader / writer will be described with reference to FIG. FIG. 6 shows a flowchart of changing diapers using a handy type reader / writer.

As shown in FIG. 6, in step ST21, the diaper user wears the diaper 10A.

In step ST22, the caregiver applies a handy reader / writer to the diaper 10A and reads the excretion detection element 20 during a regular tour of changing diapers.

In step ST23, it is determined whether or not communication between the reader / writer and the excretion detection element 20 is possible. In step ST13, if communication between the reader / writer and the excretion detection element 20 is possible, the flow proceeds to step ST24. On the other hand, if communication between the reader / writer and the excretion detection element 20 is impossible, the flow proceeds to step ST25.

In step ST24, since it is possible to determine that excretion has not been performed since communication between the reader / writer and the excretion detection element 20 is possible, the diaper is not changed by the caregiver, and the flow returns to step ST22.

In step ST25, since it is possible to determine that excretion is being performed because communication between the reader / writer and the excretion detection element 20 is impossible, the diaper is removed by the caregiver.

In step ST26, the diaper user wears a new diaper 10A.

In step ST27, immediately after changing the diaper, the excretion detecting element 20 is read by the reader / writer, and the flow returns to step ST23. In step ST27, immediately after exchanging the diaper, an initial failure of the diaper 10A can be detected by reading the excretion detecting element 20 with a reader / writer. In addition, you may abbreviate | omit reading of the excretion detection element 20 by a reader / writer immediately after diaper replacement | exchange. In this case, step ST27 may not be performed and the flow may be returned to step ST12.

As described above, a caregiver can check whether or not excretion has been performed regularly using a handy type reader / writer and change diapers.

(Embodiment 2)
[overall structure]
The diaper of Embodiment 2 which concerns on this invention is demonstrated using FIG.
FIG. 7 shows a schematic configuration when the diaper 10B of the second embodiment is viewed from above. In the second embodiment, differences from the first embodiment will be mainly described. In the second embodiment, the same or equivalent components as those in the first embodiment will be described with the same reference numerals. In the second embodiment, descriptions overlapping with those in the first embodiment are omitted.

As shown in FIG. 7, the diaper 10B of the second embodiment is different from the diaper 10A of the first embodiment in that the excretion detection element 20 is arranged at the end of the concave portion 14 in the longitudinal direction. Specifically, in the diaper 10B, the excretion detection element 20 is disposed at the end of the recess 14 provided in the back portion L3. In the following description, the end of the recess 14 on the ventral part L1 side is referred to as a start end, and the end of the recess 14 on the back side L3 side is referred to as a termination.

In the second embodiment, the excretion detection element 20 is disposed at the end of the recess 14 of the absorber 13. The end of the recess 14 is positioned in the direction of gravity when the diaper user wearing the diaper 10B is lying on his / her back. When excretion is performed while the diaper user is lying on his / her back, excrement tends to flow from the crotch part L2 toward the dorsal part L3 as compared to excretion while the diaper user is standing. Therefore, the diaper 10B arranges the excretion detection element 20 at the end of the recess 14 provided in the back portion L3, so that the urine is reliably brought into contact with the excretion detection element 20 even when the diaper user is sleeping. be able to.

[effect]
According to the diaper 10B according to Embodiment 2, the following effects can be achieved.

In the diaper 10B according to the second embodiment, the excretion detecting element 20 is arranged at the end of the concave portion 14 on the back side portion L3 side, that is, at the end of the concave portion 14, so that the diaper user can be placed on his back, for example Even in a sleeping state, urine can be reliably brought into contact with the excretion detection element 20. Therefore, the diaper 10B can reliably detect urine even if the diaper user performs excretion while lying on his / her back.

Moreover, the diaper 10B can also determine the use limit of a diaper by arrange | positioning the excretion detection element 20 in the terminal end of the recessed part 14 by the side of the back part L3. When the diaper user excretes a plurality of times, the absorption of urine by the absorber 13 of the diaper 10B becomes a limit. When the absorption of urine by the absorber 13 becomes a limit, urine that cannot be absorbed by the absorber 13 accumulates in the recess 14. In this case, if the urine collected in the recess 14 exceeds the end of the recess 14, the urine may leak to the outside of the diaper 10B. In the diaper 10B, since the excretion detection element 20 is disposed at the end of the recess 14, the use limit of the diaper is reached when the excretion detection element 20 comes into contact with urine at the end of the recess 14 and communication becomes impossible. Can be determined. With such a configuration, the diaper can be used efficiently. For example, the frequency of changing diapers can be reduced and the burden on the caregiver can be reduced.

In the second embodiment, the excretion detection element 20 is disposed at the end of the recess 14 of the back portion L3. However, the present invention is not limited to this. For example, the excretion detection element 20 may be disposed at the start end of the recess 14 on the ventral portion L1 side. In addition, the excretion detection element 20 may be disposed at both the start end of the recess 14 and the end of the recess 14. With such a configuration, since urine can be detected regardless of the state of the diaper user, the urine detection accuracy can be improved.

Further, the excretion detecting element 20 is not limited to being arranged at the end of the concave portion 14 in the longitudinal direction. The excretion detection element 20 should just be arrange | positioned in the at least one recessed part 14 among the ventral part L1 and the back part L3.

In Embodiment 1 and Embodiment 2, the configuration in which the excretion detection element 20 is disposed in the concave portion 14 of the absorber 13 is described as being applied to a diaper. However, the present invention is not limited to this. For example, the structure of Embodiment 1 and Embodiment 2 can also be applied to a diaper pad.

Diaper pad is a pad placed in a diaper. A diaper pad is demonstrated using FIG. 8 and FIG. FIG. 8 shows a diaper pad 50 provided with the excretion detection element 20. FIG. 9 is a cross-sectional view of the diaper pad 50 taken along the line BB. As shown in FIG. 8 and FIG. 9, the diaper pad 50 includes an inner sheet 51 that transmits liquid, an outer sheet 52 that transmits or waterproofs liquid, an absorber 53 that absorbs excrement, and excrement. And an excretion detection element 20 to be detected. The absorber 53 is provided with recesses 54 that are a plurality of grooves extending in the longitudinal direction of the absorber 53. In the recess 54, the excretion detecting element 20 is disposed. According to the diaper pad 50 having such a configuration, as with the diaper 10A of the first embodiment, it is possible to reliably detect urine and reduce the cost.

In the diaper pad 50, the excretion detection element 20 may be disposed at the end of the concave portion 14 in the longitudinal direction, similarly to the diaper 10B of the second embodiment. With such a configuration, urine can be reliably detected even when the diaper user excretes while lying on his back.

Although the present invention has been fully described in connection with preferred embodiments with reference to the accompanying drawings, various variations and modifications will be apparent to those skilled in the art. Such changes and modifications are to be understood as included within the scope of the present invention as long as they do not depart from the scope of the present invention.

The present invention is useful for diapers, and is excellent in terms of urine detection and cost reduction.

DESCRIPTION OF SYMBOLS 10 Diaper 11 Inner surface sheet 12 Outer surface sheet 13 Absorber 14 Recessed part 20 Excretion detection element 21 Wireless IC chip 22 Matching circuit 23 Radiation electrode 31 Reader / writer 32 Transmission unit 33 Communication module 50 Diaper pad

Claims

An inner sheet that is permeable to liquid;
An outer sheet,
An absorber disposed between the inner sheet and the outer sheet;
An excretion detection element for detecting excrement;
With
The absorber has a recess for flowing excrement on the inner sheet side,
The excretion detection element is a diaper arranged in the recess.
The diaper according to claim 1, wherein the recess is a groove extending in a longitudinal direction of the absorber.
The diaper according to claim 2, wherein the excretion detection element is disposed in a recess provided in a crotch portion.
The excretion detection element is disposed in a recess provided in at least one of the ventral part and the back part,
The diaper according to claim 2.
The diaper according to claim 4, wherein the excretion detection element is disposed at an end portion in a longitudinal direction of the concave portion.
The excretion detection element,
A wireless IC chip;
A matching circuit connected to the wireless IC chip and having a predetermined resonance frequency;
A radiation electrode connected to the matching circuit;
With
The matching circuit is located in the recess;
The diaper according to any one of claims 1 to 5.