EP0121544A1 - Dispositif de mesure de la presence d'un liquide electriquement conducteur a l'interieur de celui-ci - Google Patents

Dispositif de mesure de la presence d'un liquide electriquement conducteur a l'interieur de celui-ci

Info

Publication number
EP0121544A1
EP0121544A1 EP19830903226 EP83903226A EP0121544A1 EP 0121544 A1 EP0121544 A1 EP 0121544A1 EP 19830903226 EP19830903226 EP 19830903226 EP 83903226 A EP83903226 A EP 83903226A EP 0121544 A1 EP0121544 A1 EP 0121544A1
Authority
EP
European Patent Office
Prior art keywords
electrically conductive
electrodes
measuring
strip
foil
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP19830903226
Other languages
German (de)
English (en)
Inventor
Piet Bergveld
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0121544A1 publication Critical patent/EP0121544A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/48—Devices for preventing wetting or pollution of the bed
    • 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
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
    • G01N27/121—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid for determining moisture content, e.g. humidity, of the fluid

Definitions

  • the invention relates to a device for measuring the presence of electrical conducting liquid comprising at least one liquid absorbing layer, at least two electrodes approaching the absorbing layer and being permeable to moisture and means for connecting the electrodes to a measuring system.
  • the two electrodes are connected to one another in the presence of the electrical conducting liquid so that an output voltage or current is generated in the measuring system which in response actuates an alarm.
  • An example of a device of the kind set forth in the preamble is a cotton diaper with two electrically conductive wires sewn in which can be connected through push-buttons to the measuring system.
  • a disadvantage of these known diapers is that due to the high production costs they are practically not suitable for single use. Therefore, for repeated use the diapers have to be washed in order to flush away the hygroscopic salt residues, after which they have to be dried.
  • the construction with these wire-shaped electrodes and the connection by means of push-buttons is poorly resistant to such a cleaning procedure so that after some time it is no longer certain whether the electric connection are still intact.
  • An additional disadvantage of these known diapers is that prior to use this diaper cannot be tested for its effect.
  • the electrodes are formed by metal foils, for example, tin foil or aluminium foil, in which apertures are provided for passing moisture.
  • This known device has, however, the disadvantage that due to the use of metal foil the device as a whole can be deformed only with difficulty, which adversely affects the fitting form. Moreover, when the device is deformed cracks may occur in the foils so that the electric conductivity is interrupted.
  • the invention has for its object to provide a device of
  • OMPI the kind set forth in the preamble which mitigates the aforesaid inconveniences and which can be manufactured in a simple manner at lower costs so that the device is particularly suitable as a disposable product for single use.
  • this is achieved in that at least one elctrode is formed either by a foil of flexible electrically conductive synthetic resin or by a carrier provided with an electrically conductive coating.
  • the connecting means comprise conductive members located each on an outer face of the device and made from the same material as the electrodes
  • a device is obtained with which the measuring system can readily establish a contact, whilst in addition the operation of the device can be simply tested from the outside.
  • the absorbing layer and the carrier form part of one and the same strip of material a device is obtained in which the strip of material constitutes part of a path of material on which the electrodes are applied or pressed.
  • the invention furthermore relates to a strip of material intended for the manufacture of a device embodying the invention and being characterized in that at least one electrode applied thereto is either made from a foil of flexible, electrically conductive synthetic resin or comprises an electrically conductive coating.
  • the invention relates to a method of manufacturing a device for measuring the presence of electrical conducting liquid, said method being characterized in accordance with the invention in that at least one moisture-pervious foil of electrically conductive synthetic resin is fastened or else at least one electrically conductive coating is applied to a strip of moisture- absorbing material and in that in dependence on the foil and/or the coating the strip is folded to form the device and finished.
  • FIG. 2 a detailed, enlarged exploded view of a first embodiment of a device in accordance with the invention
  • Fig. 3 a strip of material to form a second embodiment of the device in accordance with the invention
  • Fig. 4 a device embodying the invention formed from the strip of material of fig. 3, connected to a measuring system;
  • Fig. 5 a third embodiment of the device in accordance with the invention.
  • the device 10 shown in fig. 1 embodying the invention comprises a moisture-absorbing layer 1. On both sides of the layer 1 are provided electrically conductive layers 2, which are pervious to moisture through the apertures 5 provided therein.
  • the electrodes 2 are each covered by a moisture-pervious protective layer 3 having holes 4 for connection to the measuring system 6.
  • Fig. 2 shows the structure of a device 20 embodying the invention, which structure is basically the same as the of the device 10 of fig. 1.
  • the device 20 comprises five layers 11 to 15 each consisting of moisture-absorbing material, for example, the material of the layer 1.
  • the layers 11 and 15 are provided with conductive members 8 and 9 enclosed between connecting means 7 and formed by an electrically conductive coating 16 applied to the carrier 11, 15 in the form of an electrically conductive pain or ink.
  • the layers 12 and 14 applied one on each side of the moisture-absorbing layer 13 are each provided with an electrode 2 of an electrically conductive coating 16 consisting of electrically conductive pain or ink in a pattern of a substantially fixed form.
  • the parts 17 and 18 of the electrodes 2 are each connected with the coating 16 of the layers 11 and 15 respectively.
  • the layer 13 sandwiched between the layers 12 and 14 provided with the electrodes 2 serves on the one hand to electrically separate the electrodes 2 from one another and on the other hand for the
  • the coatings 16 of the layers 11 and 15 are arranged on the outer sides 21 and 22 respectively so that the function of the device 20 can be checked in a simple manner with the aid of moist fingers.
  • Fig. 3 shows a path of material 23 made from strips of material 24 to form a device 30 embodying the invention and shown in Fig. 4.
  • Each strip of material 24 comprises zones 31 to 35 corresponding to the layers 11 to 15 of fig. 2, the difference being that the absorbing layer 33 and the carriers 31, 32, 34, 35 with the coating of electrically conductive paint or ink form part of one and the same strip of material 24.
  • the path of material 24 is cut along the lines 25 and via the folding lines 26 the strip of material 24 is folded to form the device 30 shown in fig. 4, the device being finished by means of stitching or a glue joint 27.
  • the device 30 is connected by means of a pinching contact 28 through an electric cable 29 to the measuring unit 36 of the measuring system 6 by which, when an electrically conductive contact is established between the electrodes 2, and audible signal is produced through the alarm 37.
  • Fig. 5 shows a device 40 embodying the invention, the structure of which is mainly identical to that of the device 10 of Fig. 1.
  • the electrodes 2 approaching the absorbing layer 1 are located only on one side thereof.
  • the electrodes 2 are each formed by a foil 38, 39 of a flexible, electrically conductive synthetic resin, for example, a carbon-doped polymer.
  • the conductive members 8, 9 are also made from this synthetic resin and are associated with the foils 38 and 39 respectively.
  • the foils 38 and 39 have complementary shapes in which tongues 41 and 42 respectively of the foils 38 and 39 respectively are in direct proximity one of the other over a very large distance.
  • the measuring system 6 will produce an audible alarm when an electric contact is established between the tongues 41 and 42.
  • the absorbing layer 1, the two foils 38, 39 and the protective layer 3 are finished to form the devic-e 40 by sealing the various layers and foils to one another so that the device 40 exhibits welding seams 43.
  • the device 40 is furthermore provided in accordance with the invention with adhering means 44, by which the device 40 can be fixed, for example, to underwear. It will be obvious that by using a larger number of electrodes, each of which is separately connected to the measuring system 6, the presence of conductive fluid can be assessed in dependence on locations.
  • the devices 10, 20, 30, 40 embodying the invention are particularly suitable for treating the disease enuresis-nocturna.
  • a further use is, for example, the detection of wound fluid, in dependence on which a bandage has or does not have to be replaced.
  • the absorbing layer in this case the zone 33, may consist of a small multiple of such zones 33', so that in accordance with the use of the device 30 embodying the invention the number of absorbing layers can be raised.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Biochemistry (AREA)
  • Nursing (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Epidemiology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

Un dispositif (10, 20, 30, 40) de mesure de la présence d'un liquide électriquement conducteur, avec au moins une couche d'absorption de liquide (1), au moins deux électrodes perméables à l'humidité (2) s'approchant de la couche d'absorption et un mécanisme (7) pour connecter les électrodes (2) à un système de mesure (6), comprend au moins une électrode (2) formée soit d'une feuille (38, 39) de résine synthétique flexible et électriquement conductrice, soit d'une surface porteuse (11, 12, 14, 15) dotée d'un revêtement électriquement conducteur (16).
EP19830903226 1982-10-07 1983-10-07 Dispositif de mesure de la presence d'un liquide electriquement conducteur a l'interieur de celui-ci Withdrawn EP0121544A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8203901A NL8203901A (nl) 1982-10-07 1982-10-07 Inrichting tot het meten van de aanwezigheid van geleidende vloeistoffen, gekenmerkt door het toepassen van minstens twee elektrisch geleidende en vochtdoorlatende elektroden, aangebracht op een vocht absorberende laag.
NL8203901 1982-10-07

Publications (1)

Publication Number Publication Date
EP0121544A1 true EP0121544A1 (fr) 1984-10-17

Family

ID=19840386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830903226 Withdrawn EP0121544A1 (fr) 1982-10-07 1983-10-07 Dispositif de mesure de la presence d'un liquide electriquement conducteur a l'interieur de celui-ci

Country Status (3)

Country Link
EP (1) EP0121544A1 (fr)
NL (1) NL8203901A (fr)
WO (1) WO1984001626A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4760383A (en) * 1986-12-08 1988-07-26 Dilorenzo Daniel J Enuresis treatment system
DE3744233A1 (de) * 1987-09-01 1989-03-16 Daimler Benz Ag Einrichtung zur ermittlung von feuchtigkeit im bereich des fahrzeugbodens eines kraftfahrzeuges
EP0311939A3 (fr) * 1987-10-12 1990-10-17 Nihon Parkerizing Co., Ltd. Capteur d'humidité
US4942364A (en) * 1988-02-19 1990-07-17 Asahi Kasei Kogyo Kabushiki Kaisha Moisture and dew-detection sensor
US5192932A (en) * 1989-11-01 1993-03-09 Schwab Jr Henry J Sensing mat, and methods of constructing and utilizing same
NL1010067C2 (nl) 1998-09-11 2000-03-27 Tno Systeem voor het detecteren van de aanwezigheid van vocht.
US6292102B1 (en) * 1999-07-22 2001-09-18 Bed-Check Corporation Apparatus for detecting enuresis in a patient
NL1015940C2 (nl) * 2000-08-15 2002-02-25 Tno Vochtsensor, luier voorzien van een dergelijke sensor en werkwijze voor het detecteren van de aanwezigheid en/of het intact zijn van de vochtsensor.
US7477156B2 (en) 2005-04-29 2009-01-13 Kimberly-Clark Worldwide, Inc. Connection mechanisms in absorbent articles for body fluid signaling devices
US7394391B2 (en) 2005-04-29 2008-07-01 Kimberly-Clark Worldwide, Inc. Connection mechanisms in absorbent articles for body fluid signaling devices
US8304598B2 (en) 2005-12-15 2012-11-06 Kimberly-Clark Worldwide, Inc. Garments with easy-to-use signaling device
US20110198222A1 (en) * 2010-02-12 2011-08-18 Theos Medical Systems, Inc. Electrolyte sensor using conductive elastomer
DE102013018917A1 (de) * 2013-11-13 2015-05-13 Rheinisch-Westfälische Technische Hochschule Aachen System und Verfahren zur Überwachung eines Untergrundes hinsichtlich Schäden und/oder zum Schutz eines Untergrundes vor Schäden
CN106510959B (zh) * 2015-09-15 2019-09-06 华星科技股份有限公司 智能护理耗材与其卷带式制造方法以及卷带式感应模块
GB2571101B (en) * 2018-02-15 2020-12-16 Digital & Future Tech Limited Flexible circuit for detecting liquid presence
DE102019123872A1 (de) * 2019-09-05 2021-03-11 B. Braun Melsungen Aktiengesellschaft Matratze mit dreidimensionalem Wirkgewebe und Feuchtesensor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE352885A (fr) *
US2668202A (en) * 1952-08-02 1954-02-02 Benjamin D Kaplan Moisture responsive signaling device
GB772452A (en) * 1954-05-31 1957-04-10 John Colin Davenport Apparatus for treating nocturnal enuresis
FR2196588A5 (fr) * 1972-08-18 1974-03-15 Parcellier Dani L
GB1521489A (en) * 1975-12-09 1978-08-16 Hooker P Measurement of humidity
US4191950A (en) * 1978-02-09 1980-03-04 Levin Anne F Anti-bed-wetting device
FR2469202A1 (fr) * 1979-11-15 1981-05-22 Tacussel Jacques Cellules electrochimiques comportant des electrodes constituees par des materiaux composites

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8401626A1 *

Also Published As

Publication number Publication date
WO1984001626A1 (fr) 1984-04-26
NL8203901A (nl) 1984-05-01

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19841204

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Effective date: 19860718

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Effective date: 19870129