WO2017059831A1 - Sensory system for the electronic detection of body fluids in a diaper - Google Patents

Sensory system for the electronic detection of body fluids in a diaper Download PDF

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Publication number
WO2017059831A1
WO2017059831A1 PCT/CZ2016/000111 CZ2016000111W WO2017059831A1 WO 2017059831 A1 WO2017059831 A1 WO 2017059831A1 CZ 2016000111 W CZ2016000111 W CZ 2016000111W WO 2017059831 A1 WO2017059831 A1 WO 2017059831A1
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WO
WIPO (PCT)
Prior art keywords
sensory
sensory system
diaper
electrodes
print
Prior art date
Application number
PCT/CZ2016/000111
Other languages
French (fr)
Inventor
Lubomír KUBÁČ
František JOSEFÍK
Tomáš PEPRNĺČEK
Dušan UHER
Tomáš SYROVÝ
Lucie SYROVÁ
Original Assignee
Centrum organické chemie s.r.o.
Fatra A.S.
Univerzita Pardubice
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Centrum organické chemie s.r.o., Fatra A.S., Univerzita Pardubice filed Critical Centrum organické chemie s.r.o.
Publication of WO2017059831A1 publication Critical patent/WO2017059831A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/048—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance for determining moisture content of the material
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm
    • A61F2013/424—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm having an electronic device

Definitions

  • the invention relates to the field of the detection of leakage of body fluids in a diaper. Background of the invention
  • Electronic monitoring of the leakage of urine and other body fluids is becoming increasingly important as an element in the protection of human health and increasing automation in the field of patient care.
  • the technical capabilities of current electronic sensory systems can be used e.g. to indicate the moisture change of a diaper or to detect changes to other parameters by transmitting information remotely to caregivers.
  • Information about the saturation of a diaper is desired both by parents taking care of small children and by nursing staff taking care of immobile patients who often have a reduced ability in their own judgment about the need to change a diaper, similar to small children.
  • the timely replacement of diapers has important health implications in that it enables the prevention of a number of dermal problems associated with the prolonged contact of disabled people with their own excrement.
  • Patent document US 3 675 654 describes a color change that depends on the detection of moisture, wherein the sensory prints are placed at various locations on the diaper.
  • the system requires a personal check and does not allow for the remote transmission of information about the state of the diaper, which is a drawback of the thus arranged detection system.
  • Patent US 5 557 263 the transmission of information is made possible by inserting a resistance system directly into the diaper.
  • the principle of detection of humidity is based on the interconnection of inserted electrodes resulting from the contact with body fluids, wherein there is a change in the measured resistance, and on this basis a signal change is sent.
  • Patent US 6774 800 and patent application US 2002/0145525 relates to the connection of a detection system to an RFID communication signal. These documents deal with the possibility of connecting diapers via a detection and communication system using a radio signal. The embedded chip then identifies the wearer of this signal, which allows the device to be used in hospitals or facilities where care is given to long-term sick and immobile patients.
  • Moisture from incontinence can be detected by a change of capacity, as described " in US “ 4 653 491 and US 5 903 222.
  • the systems do not communicate with ah RFID communication system, but the indication is accompanied by a sound signal, which appears to be unsuitable particularly for medical facilities.
  • the : disadvantages of the above-described detection systems Tie pam3 ⁇ 4U
  • Other disadvantages include insufficient length of the electrode SySterh, which is related to the inability to indicate moisture across the entire surface of the diaper: In the event of sufficient length of the electrode system, it Te'moval' is associated with sanitary restrictions because of the danger of contact with urine or excrement.
  • Other disadvantages include the rapid wear of the electrode system due to frequent use.
  • the purpose of the invention is to create a sensory system for electronically detecting incontinence which would remedy the aforementioned disadvantages, whose acquisition would be inexpensive, and which would be directly part of a disposable diaper that could be linked to a portable communication electronic sensing element.
  • the sensory system for electronic detection comprises an electrode system that responds to a change in moisture through a change in electrical resistance and a sensory and communication unit for indicating changes in the measured electrical resistance.
  • the essence of the invention consists in that the electrode system is formed by two interdigitally arranged electrodes formed as a print layer arranged on a flexible carrier substrate of a disposable diaper.
  • the interdigital electrode system consists of two electrodes in the form of two ridges that insert into each other, and the system is printed on the carrier substrate of the diaper, preferably a disposable diaper.
  • the carrier substrate is a permeable film or its laminate with a nonwoven fabric or a transparent film from polyethylene terephthalate, polypropylene, or polycarbonate.
  • the carrier substrate provides impermeability of the diaper against the leakage of liquids, thus providing comfort to the wearer.
  • the surface of the carrier substrate is modified to increase adhesion of the print layer, such as by a plasma.
  • the print layer is formed as flexographic printing, tampon printing, screen printing, gravure, or offset printing. These inexpensive printing techniques allow printing from roll to roll, aka R2R printing in such a way that incontinence can be indicated along the entire area of the diaper. Conventional methods of print production can be used for printing.
  • the electrodes are formed of a material based on conductive polymers, carbon composites, silver composites, or copper composites. The advantage of the use of these materials lies mainly in their biodegradability and combustibility, creating a small burden on the environment.
  • Conductive polymers are preferably used on a base of dispersions or solutions of polypyrrole, polyaniline, polyacetylene, or polyethylenedioxythiophene.
  • Carbon composites are preferably used on a base of graphite, activated carbon, carbon nanotubes, or particles of graphene or nano-graphite materials.
  • the surface resistance of the printed electrodes is in the range of 10 -2 to 10 7 Ohms/square.
  • the sensory and communication unit is portable and is provided with contact elements for connection with the electrode system.
  • the electrodes of the system are provided with contact parts, where the electrodes are parallel and the contact elements are formed as contact pins or clips adapted to pierce the contact parts of the electrode system.
  • the contact elements are part of the entire sensory and cbr munication unit, which has elements of identification and preferably can be used repeatedly.
  • the sensory and communication unit sends a signal to the evaluating device.
  • the evaluation device is provided with a communication circuit for sending information about indications of incontinence to an appropriate software module of a central information system, where the transmitted information is displayed either using special software at the nursing staff in a healthcare facility and is preferably connected to several dozens of users, each with a specific ID, or to a mobile communication unit of an individual user in a home environment.
  • the sensory system is usable particularly for the electronic detection of body fluids and is intended both for long term immobile patients requiring constant care and for small children.
  • the costs related to the acquisition of the sensory system for the electronic detection of incontinence according to the invention are small.
  • the sensory system is a direct part of a disposable diaper, which is connectable to a portable communication electronic sensing element, which subsequently transmits the information to an evaluation device, which emits a signal on the necessity of changing the diaper without the need to constantly check the diaper.
  • Fig. 1 shows a schematic representation of the sensory system for electronically detecting incontinence with a sensory and communication unit and the " ' evaluating device.
  • the sensory system for the electronic detection of incontinence includes an interdigital electrode system 2 printed on a carrier substrate 5, namely on a vapor-permeable film.
  • the electrode system 2 rnay be printed on a laminate with a nonwoven fabric or a transparent film of polyethylene terephthalate, polypropylene, or polycarbonate. Printing is carried out using tampon printing with carbon structures. The surface of the vapor-permeable film is treated to increase the free surface energy.
  • an electrode system 2 is printed, which exhibits a surface resistance in the order of 10 2 to 10 3 ohms/square, depending on the printing conditions.
  • Photopolymer cliche is used with a well depth of 40 pm.
  • a flexographic printing using silver composites, screen printing using polypyrrole, gravure using PEDOT/PSS, or offset printing using carbon structures may be used for printing the electrode system 2 onto the carrier substrate 5.
  • the electrode system 2 printed onto a vapor-permeable film using flexographic printing with silver composites exhibits a surface resistance in the order of 1 to 10 ohms/square.
  • Conductive bonding of interdigitated electrodes 4 with a portable sensory and communication unit 3 is secured via conductive pins, represented by the contact elements 7. Interconnection occurs with the piercing of the edge portions of the electrodes 4 by the conductive pins. After the leakage of fluid into the disposable diaper 6, a change in the measured resistance occurs between the electrodes 4, which is a signal to transmit information about the connection of the circuit.
  • the peripheral, contact parts 8 of the electrodes 4 are used, where the electrodes 4 are parallel, and the conductive pins are used which pierce the film at the contact part 8 of the electrode 4.
  • the contact element 7 may be designed to pierce the film in the contact part 8 of the electrode 4, designed as a clip.
  • the sensory and communication unit 3 which is provided with an RFID module 10 for transmission on a given radio frequency, measures the circuit and transmits the RFID signal to the evaluating device 9.
  • the transmitted signal of the sensory and communication unit 3 is at a distance of three meters to the evaluation device 9. In other embodiments, this distance can be up to twenty meters.
  • the evaluation device 9 is, via an interface cable, connected to a computer which is equipped with special software. In another embodiment, the evaluation device 9 is connected to a computer via Wi-Fi to a subsequent middleware.
  • the software enables the identification of the sensory and communication unit 3 and configuration of critical surface resistance which makes it apparent that the interdigital electrode system 2 has come into contact with liquids.
  • the evaluation device 9 may be a different central information system 12 or a mobile communication unit 13, e.g.
  • the sensed surface resistance in a disposable diaper 6 in a dry state is greater than 1000 Ohms, upon contact with body fluid the resistance decreases to 340 Ohms, while the set limit is 500 Ohms. The change occurs immediately after contact with the fluid.
  • the software provides immediate feedback - information that the moisture on the film has risen above a set limit.
  • the sensory system for the electronic detection of incontinence in a diaper can be used in the manufacture of disposable diapers for children and for patients with long term immobility, in which it is not necessary to be inserted into the diaper but is already built into the diaper. This can be used to detect the presence of body fluids, particularly urine, feces, or blood in the diaper without the need to remove the diaper using a computer or other communication element.

Abstract

A sensory system (1) for the electronic detection of body fluids in a diaper comprises an electrode system (2) that responds to a change in moisture through a change in the electrical resistance and a sensory and communication unit (3) for indicating changes in the measured electrical resistance. The electrode system (2) is formed by two interdigitally arranged electrodes (4) formed as a print layer arranged on a flexible carrier substrate (5) of a disposable diaper (6). The sensory system (1 for the electronic detection of incontinence in a diaper (6) can be used in the manufacture of disposable diapers (6) for children and for patients with long term immobility.

Description

Sensory system for the electronic detection of body fluids in a diaper
Field of the invention
The invention relates to the field of the detection of leakage of body fluids in a diaper. Background of the invention
Electronic monitoring of the leakage of urine and other body fluids is becoming increasingly important as an element in the protection of human health and increasing automation in the field of patient care. The technical capabilities of current electronic sensory systems can be used e.g. to indicate the moisture change of a diaper or to detect changes to other parameters by transmitting information remotely to caregivers. Information about the saturation of a diaper is desired both by parents taking care of small children and by nursing staff taking care of immobile patients who often have a reduced ability in their own judgment about the need to change a diaper, similar to small children. The timely replacement of diapers has important health implications in that it enables the prevention of a number of dermal problems associated with the prolonged contact of disabled people with their own excrement.
The detection system may be based on a number of principles. Patent document US 3 675 654 describes a color change that depends on the detection of moisture, wherein the sensory prints are placed at various locations on the diaper. However, the system requires a personal check and does not allow for the remote transmission of information about the state of the diaper, which is a drawback of the thus arranged detection system. In Patent US 5 557 263, the transmission of information is made possible by inserting a resistance system directly into the diaper. The principle of detection of humidity is based on the interconnection of inserted electrodes resulting from the contact with body fluids, wherein there is a change in the measured resistance, and on this basis a signal change is sent. The entire system is reusable, but the actual electrode system is uncomfortable and complicated and has limited usability from a practical point of view. Patent US 6774 800 and patent application US 2002/0145525 relates to the connection of a detection system to an RFID communication signal. These documents deal with the possibility of connecting diapers via a detection and communication system using a radio signal. The embedded chip then identifies the wearer of this signal, which allows the device to be used in hospitals or facilities where care is given to long-term sick and immobile patients.
Human excrement contains a number of gases that can be used to indicate incontinence and feces. Document US 5 709 222 describes a detection system based on the indication of selected gases which is used in combination with a remote identification device.
Moisture from incontinence can be detected by a change of capacity, as described "in US "4 653 491 and US 5 903 222. The systems do not communicate with ah RFID communication system, but the indication is accompanied by a sound signal, which appears to be unsuitable particularly for medical facilities.
There are already a number of commercially available devices on the market that are ba¾'ed on" t e aforementioned systems and which are now corYnectdbfe" wfth
Figure imgf000003_0001
applications. The applications can then indicate the" freq ericy: of the
Figure imgf000003_0002
stock supplies, and with it the need for the purchase ¾? nle"W supplies. The systems described, however, are based in all cases on the use of an electrode system which must be inserted into the diaper. The: disadvantages of the above-described detection systems : Tie pam¾U|aHy In 9i&co rf0rtfrue to the low flexibility of the electrode system whibh leads to a reductibn in the permeability of the diaper, which often has a negative impact on the comfort of the patient or user. Other disadvantages include insufficient length of the electrode SySterh, which is related to the inability to indicate moisture across the entire surface of the diaper: In the event of sufficient length of the electrode system, it Te'moval' is associated with sanitary restrictions because of the danger of contact with urine or excrement. Other disadvantages include the rapid wear of the electrode system due to frequent use. The purpose of the invention is to create a sensory system for electronically detecting incontinence which would remedy the aforementioned disadvantages, whose acquisition would be inexpensive, and which would be directly part of a disposable diaper that could be linked to a portable communication electronic sensing element.
Summary of the invention
This problem is solved by a sensory system for the electronic detection of body fluids in a diaper according to this invention.
The sensory system for electronic detection comprises an electrode system that responds to a change in moisture through a change in electrical resistance and a sensory and communication unit for indicating changes in the measured electrical resistance.
The essence of the invention consists in that the electrode system is formed by two interdigitally arranged electrodes formed as a print layer arranged on a flexible carrier substrate of a disposable diaper. The interdigital electrode system consists of two electrodes in the form of two ridges that insert into each other, and the system is printed on the carrier substrate of the diaper, preferably a disposable diaper.
In a preferred embodiment, the carrier substrate is a permeable film or its laminate with a nonwoven fabric or a transparent film from polyethylene terephthalate, polypropylene, or polycarbonate. The carrier substrate provides impermeability of the diaper against the leakage of liquids, thus providing comfort to the wearer. The surface of the carrier substrate is modified to increase adhesion of the print layer, such as by a plasma.
In a preferred embodiment, the print layer is formed as flexographic printing, tampon printing, screen printing, gravure, or offset printing. These inexpensive printing techniques allow printing from roll to roll, aka R2R printing in such a way that incontinence can be indicated along the entire area of the diaper. Conventional methods of print production can be used for printing. In another preferred embodiment, the electrodes are formed of a material based on conductive polymers, carbon composites, silver composites, or copper composites. The advantage of the use of these materials lies mainly in their biodegradability and combustibility, creating a small burden on the environment. Conductive polymers are preferably used on a base of dispersions or solutions of polypyrrole, polyaniline, polyacetylene, or polyethylenedioxythiophene. Carbon composites are preferably used on a base of graphite, activated carbon, carbon nanotubes, or particles of graphene or nano-graphite materials.
Given the inducibility of the system, the surface resistance of the printed electrodes is in the range of 10-2 to 107 Ohms/square.
The sensory and communication unit is portable and is provided with contact elements for connection with the electrode system. The electrodes of the system are provided with contact parts, where the electrodes are parallel and the contact elements are formed as contact pins or clips adapted to pierce the contact parts of the electrode system. The contact elements are part of the entire sensory and cbr munication unit, which has elements of identification and preferably can be used repeatedly. The sensory and communication unit sends a signal to the evaluating device.
In a preferred embodiment, the evaluation device is provided with a communication circuit for sending information about indications of incontinence to an appropriate software module of a central information system, where the transmitted information is displayed either using special software at the nursing staff in a healthcare facility and is preferably connected to several dozens of users, each with a specific ID, or to a mobile communication unit of an individual user in a home environment.
The sensory system is usable particularly for the electronic detection of body fluids and is intended both for long term immobile patients requiring constant care and for small children. The costs related to the acquisition of the sensory system for the electronic detection of incontinence according to the invention are small. The sensory system is a direct part of a disposable diaper, which is connectable to a portable communication electronic sensing element, which subsequently transmits the information to an evaluation device, which emits a signal on the necessity of changing the diaper without the need to constantly check the diaper.
Description of the drawings
The invention is explained in the following drawings, wherein:
Fig. 1 shows a schematic representation of the sensory system for electronically detecting incontinence with a sensory and communication unit and the " ' evaluating device.
Examples of the preferred embodiments of the invention
It is understood that the hereinafter described and illustrated specific examples of the - ^ij2¾# n':'0 -the':-Tn ention are presented for illustrative purposes and not as a limitation of the examples of the realization of the invention to the cases shown : herein; Experts who are familiar with the state of technology shall find, or using routine experimentation will be able to determine, a greater or lesser number of equivalents to the specific realizations of the invention which are specifically described here. These equivalents shall also be included into the scope of the claims.
The sensory system for the electronic detection of incontinence, shown in Fig. 1 , includes an interdigital electrode system 2 printed on a carrier substrate 5, namely on a vapor-permeable film. In other examples of the embodiment, the electrode system 2 rnay be printed on a laminate with a nonwoven fabric or a transparent film of polyethylene terephthalate, polypropylene, or polycarbonate. Printing is carried out using tampon printing with carbon structures. The surface of the vapor-permeable film is treated to increase the free surface energy. Using semi-automatic tampon machines and using print formulations containing carbon nanostructures, an electrode system 2 is printed, which exhibits a surface resistance in the order of 102 to 103 ohms/square, depending on the printing conditions. Photopolymer cliche is used with a well depth of 40 pm. In other examples of the embodiment, a flexographic printing using silver composites, screen printing using polypyrrole, gravure using PEDOT/PSS, or offset printing using carbon structures may be used for printing the electrode system 2 onto the carrier substrate 5. The electrode system 2 printed onto a vapor-permeable film using flexographic printing with silver composites exhibits a surface resistance in the order of 1 to 10 ohms/square.
Conductive bonding of interdigitated electrodes 4 with a portable sensory and communication unit 3 is secured via conductive pins, represented by the contact elements 7. Interconnection occurs with the piercing of the edge portions of the electrodes 4 by the conductive pins. After the leakage of fluid into the disposable diaper 6, a change in the measured resistance occurs between the electrodes 4, which is a signal to transmit information about the connection of the circuit. For connections, the peripheral, contact parts 8 of the electrodes 4 are used, where the electrodes 4 are parallel, and the conductive pins are used which pierce the film at the contact part 8 of the electrode 4. In another example of the embodiment, the contact element 7 may be designed to pierce the film in the contact part 8 of the electrode 4, designed as a clip.
The sensory and communication unit 3, which is provided with an RFID module 10 for transmission on a given radio frequency, measures the circuit and transmits the RFID signal to the evaluating device 9. The transmitted signal of the sensory and communication unit 3 is at a distance of three meters to the evaluation device 9. In other embodiments, this distance can be up to twenty meters. The evaluation device 9 is, via an interface cable, connected to a computer which is equipped with special software. In another embodiment, the evaluation device 9 is connected to a computer via Wi-Fi to a subsequent middleware. The software enables the identification of the sensory and communication unit 3 and configuration of critical surface resistance which makes it apparent that the interdigital electrode system 2 has come into contact with liquids. In another embodiment, the evaluation device 9 may be a different central information system 12 or a mobile communication unit 13, e.g. a smartphone or tablet with the corresponding application installed. The sensed surface resistance in a disposable diaper 6 in a dry state is greater than 1000 Ohms, upon contact with body fluid the resistance decreases to 340 Ohms, while the set limit is 500 Ohms. The change occurs immediately after contact with the fluid. The software provides immediate feedback - information that the moisture on the film has risen above a set limit.
Industrial applicability
The sensory system for the electronic detection of incontinence in a diaper according to this invention can be used in the manufacture of disposable diapers for children and for patients with long term immobility, in which it is not necessary to be inserted into the diaper but is already built into the diaper. This can be used to detect the presence of body fluids, particularly urine, feces, or blood in the diaper without the need to remove the diaper using a computer or other communication element. '
Overview of the positions used in the drawings
1 sensory system
2 electrode system
3 sensory and communication unit
4 electrode
5 carrier substrate
6 disposable diaper
7 contact element
8 contact part of the electrode system
9 evaluation device
10 RFID module
11 communication circuit
12 central information system
13 mobile communication unit

Claims

1. A sensory system (1 ) for the electronic detection of body fluids in a diaper, comprising an electrode system (2) that responds to a change in moisture through a change in the electrical resistance and a sensory and communication unit (3) for indicating changes in the measured electrical resistance, characterized in that the electrode system (2) is formed by two interdigitally arranged electrodes (4) formed as a print layer arranged on a flexible carrier substrate (5) of a disposable diaper (6).
2. A sensory system (1 ) according to claim 1 , characterized in that the carrier substrate (5) is a vapor-permeable film or its laminate with a nonwoven fabric, or a transparent film of polyethylene terephthalate, polypropylene, or polycarbonate.
3. A sensory system (1 ) according to claim 1 or 2, characterized in that the surface of the carrier substrate (5) is modified to increase adhesion of the print layer.
4. A sensory system (1 ) according to any of claims 1 to 3, characterized in that the printed layer is formed as a flexographic print, tampon print, screen print, gravure print, or offset print.
5. A sensory system ( ) according to any of claims 1 to 4, characterized in that the electrodes (4) are formed from a material based on conductive polymers, carbon composites, silver composites, or copper composites.
6. A sensory system (1 ) according to claim 5, characterized in that conductive polymers are on a basis of dispersions or solutions of polypyrrole, polyaniline, polyacetylene, or polyethylenedioxythiophene.
7. A sensory system (1 ) according to claim 5, characterized in that the carbon composites are on a basis of graphite, activated carbon, carbon nanotubes, or particles of graphene or nano-graphite materials.
8. A sensory system (1 ) according to claim 5, characterized in that the resistance of the electrodes is in the range of 10"2 to 107 Ohms/square.
9. A sensory system (1 ) according to any of claims 1 to 8, characterized in that the sensory and communication unit (3) is portable and is provided with contact elements (7) for connection with the electrode system (2).
10. A sensory system (1 ) according to any of claims 1 to 9, characterized in that the electrodes (4) are provided with contact parts (8), wherein the electrodes (4) are parallel and the contact elements (7) are formed as contact pins or clips adapted to pierce the contact parts (8) of the electrode system (2).
11. A sensory system ( ) according to any of claims 1 to 10, characterized in that it further comprises an evaluation device (9), wherein the sensory and
' "communication unit (3) is provided with an FID module (10) for co hedtfbn 'to ifie%valUation device (9) on a selected radio frequency.
12. A sensory system (1) according to claim 11 , characterized in that the evaluation J deVide (9) is provided with a communication circuit (11) for keeping ihfdrrhaiio'n about indications of incontinence to the appropriate software module of ¾ Antral information system (12) or to a mobile communication unit (13) of the i ndivioiiai u er
PCT/CZ2016/000111 2015-10-09 2016-10-04 Sensory system for the electronic detection of body fluids in a diaper WO2017059831A1 (en)

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CZ2015-31630U CZ28847U1 (en) 2015-10-09 2015-10-09 Sensory system for electronic detection of body fluids in napkin

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WO2017218338A1 (en) * 2016-06-13 2017-12-21 Verily Life Sciences Llc Ultra-low power one-shot hydration sensing system
EP3427709A1 (en) * 2017-07-13 2019-01-16 Assistr Digital Health Systems GmbH Wetness monitoring apparatus for incontinence surveillance
CN109303644A (en) * 2017-07-28 2019-02-05 北京和宽科技有限公司 It is a kind of for detecting the method for making its electrode of diaper
WO2019046178A1 (en) * 2017-09-01 2019-03-07 The Procter & Gamble Company Method of making an absorbent article with reactive compositions
CN109481153A (en) * 2018-12-14 2019-03-19 深圳代科技有限公司 A kind of sense electronics wet absorption articles
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