WO1998012997A1 - A transducer pad comprising a sensor for detecting enuresis nocturna, sheets comprising the transducer pad, methods of producing the transducer pad and the sheets, and use thereof - Google Patents

A transducer pad comprising a sensor for detecting enuresis nocturna, sheets comprising the transducer pad, methods of producing the transducer pad and the sheets, and use thereof Download PDF

Info

Publication number
WO1998012997A1
WO1998012997A1 PCT/DK1997/000406 DK9700406W WO9812997A1 WO 1998012997 A1 WO1998012997 A1 WO 1998012997A1 DK 9700406 W DK9700406 W DK 9700406W WO 9812997 A1 WO9812997 A1 WO 9812997A1
Authority
WO
WIPO (PCT)
Prior art keywords
transducer pad
woven material
conductor pattern
transducer
sheet
Prior art date
Application number
PCT/DK1997/000406
Other languages
French (fr)
Inventor
Ulrich Oppenhejm
Original Assignee
Oppenhejm & Jansson Aps
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 Oppenhejm & Jansson Aps filed Critical Oppenhejm & Jansson Aps
Priority to AU43762/97A priority Critical patent/AU4376297A/en
Publication of WO1998012997A1 publication Critical patent/WO1998012997A1/en

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

Definitions

  • a transducer pad comprising a sensor for detecting enuresis nocturna, sheets comprising the transducer pad, methods of producing the transducer pad and the sheets, and use thereof
  • the invention relates to a sensor for detecting enuresis nocturna and comprising a transducer pad having applied thereon a conductor pattern with two current paths adapted to be connected to an alarm which emits a signal when the current paths are short-circuited because of occurrence of urine on the transducer pad.
  • the invention moreover relates to sheets comprising a transducer pad, methods of producing the transducer pad and the sheets, and use thereof.
  • condition enuresis nocturna is a condition which occurs in children as well as adults.
  • Enuresis nocturna is an extremely unpleasant condition particularly for children and may especially have psychical consequences. Thus, children suffering from enuresis nocturna will frequently be cut off from sleeping the night with other children, as they are ashamed at being unable to avoid wetting the bed. It also involves some "trouble" for the parents of the children, since very frequent cleaning of the bed in which the child lies is necessary.
  • the conditioning apparatus consists of a transducer pad which has two electrical conductor paths provided on a sheetlike blanket which is connected to an alarm device. When the two conductors on the transducer pad are short-circuited because of the detection of urine, the conductors will be short-circuited, and an alarm will be given.
  • Such an apparatus is known e.g. from the published Brit- ish Patent Application No. 2 228 815 A.
  • This known device comprises a sensor in the form of two separate electrical conductors which are printed on a water-repellent plastics material.
  • a cloth may be positioned between the patient and the water-repellent plastics ate- rial so that the patient to be treated will find it less uncomfortable lying on this substrate.
  • an object of the invention is to provide a transducer pad for detecting enuresis nocturna which is more comfortable and hygienic.
  • transducer pad of the type stated in the introductory portion of claim 1 which is characterized in that the transducer pad consists of a liquid-absorbing material on whose surface the conductor pattern has been applied by a printing method.
  • the water-absorbing material is formed by a non-woven material which has been found to be extremely suitable for use in connection with the printing of conductor paths.
  • the conductor pattern is a conductive paste, such as a silver paste, optionally dissolved with a 50% diluent, it is ensured that the transducer pad may be adapted to various alarm systems, as the conductivity of the conductor paths may be adapted precisely to the sensitivity range of an alarm system. This also results in a saving in the production, since the amount of silver paste may be reduced.
  • the invention also relates to a sheet comprising a sensor having a transducer pad.
  • This sheet is characterized in that the sheet consists of the transducer pad with the conductor pattern which is formed by a non-woven material
  • This provides a sheet which may be produced as a disposable item which may be placed directly on a mattress, and the patient may be placed directly on top of the sheet. Further, an extremely stable substrate which does not crease, is provided hereby.
  • the sheet may be produced as defined more fully in claim 8.
  • the invention also relates to a method of producing a transducer pad having a conductor pattern for use in the detection of enuresis nocturna. This method comprises the steps of:
  • a conductive paste such as a silver paste
  • the invention relates to a method of producing a sheet. This method is characterized by comprising the steps of:
  • a conductive paste such as a silver paste
  • a liquid-repellent layer such as a plas- tics substrate
  • the sheet may be produced by a method as defined more fully in claim 12.
  • the invention relates to a use of a transducer pad.
  • fig. 1 is a schematic view of the transducer pad according to the invention.
  • fig. 2 is an enlarged view of the printing of the conduc- tor pattern on the transducer pad according to the invention
  • fig. 3 is a schematic view of a sheet with the transducer pad according to the invention.
  • fig. 4 is an extruded, schematic view of the structure of the sheet of fig 3,
  • fig. 5 is an enlarged view of contact points on the transducer pad according to the invention.
  • fig. 6 is a schematic view of an alarm device for use in connection with the transducer pad and the sheet according to the invention
  • fig. 7 is a schematic view of the structure of a sheet with the transducer pad and a plastics substrate in an alternative embodiment of the invention
  • fig. 8 is a schematic view of a sanitary towel with a plastics substrate according to the invention
  • fig. 9 is a schematic view of a variant of the embodiment of fig. 8, and
  • fig. 10 shows a patient in a bed provided with a transducer pad according to the invention.
  • the transducer pad of the invention is gener ⁇ ally designated by 1.
  • the transducer pad 1 consists of a non-woven material 2, which is a water-absorbing material. This material is provided with two conductor paths 3, 4 which have been applied by means of a pressure treatment. The two conductor paths terminate in two con ⁇ tact points 5, which are intended to be connected to an alarm (not shown) .
  • the mode of operation of the transducer pad is such that when liquid touches the non-woven material 2, a short-circuit will take place between the conductor paths 4, 5 which can be detected by an alarm.
  • Fig. 2 shows a fraction of the transducer pad 1 in somewhat enlarged view. It also appears from the figure that the conductor path, here in the form of paste 6, is printed almost through the non-woven material . In other words, the silver paste is sucked down into the non-woven material, which means that it will not break after solidification.
  • the non-woven material is cut to a desired length, depending on the use.
  • This use may e.g. be in connection with the production of a sheet which is placed on a bed, or e.g. for the production of a pair of briefs, a sani- tary towel or a diaper, where it is needed to detect onset of urination.
  • a printing frame is produced, with a template having the shape of the conductor pattern to be applied to the non-woven material.
  • Conductive paste e.g. silver paste, is now applied to the template in the printing frame.
  • the silver paste is diluted in a suitable manner, so that the electrical resistance in the silver paste may be varied for use in the adaptation to various alarm connections, which may have various sensitivity ranges. It is so that the more sensitive the alarm device is, the less resistance is required m the silver paste, which provides the advantage that less silver paste may be used in more sensitive devices, thereby achieving cost savings in the production of transducer pads.
  • Printing is performed after the application of the silver paste, and the entire transducer pad is fed into a heating tunnel, which has a temperature of about 120 °C, for about 1-15 minutes.
  • Fig. 3 shows a first embodiment of the use of the transducer pad according to the invention.
  • the numeral 7 designates a sheet on whose surface the trans- ducer pad 2 is arranged with its conductor paths 3, 4 and contact points 5.
  • the sheet, cf. fig. 4 is constructed as a laminate consisting of four layers.
  • the upper layer 2 is the transducer pad itself shown m fig. 3. This layer is arranged such that the printing side faces downwards toward a layer 8, which is a very thin non-woven material which retains the liquid-absorbing layer 9 which is constructed in the same manner as a conventional diaper.
  • the numeral 10 designates a water-repellent layer which may e.g.
  • the four layers may be attached to each other by means of various known tech- niques, such as by gluing with strips of glue, spot gluing, welding, ultrasonic heat welding, single stitching, Velcro closure, etc.
  • Motifs attractive to children such as bears, aircraft, cartoon characters, idols and the like, may also be printed on the sheet, so that it does not have a too sterile appearance.
  • Fig. 5 shows in enlarged view an example of how the contact points 5 on the transducer pad may be shaped.
  • the contact points 5 are shaped as push-buttons, which may be connected to e.g. wires (not shown) which are connected to corresponding push- buttons in the alarm 11, which is shown schematically in fig. 6, and which also has push-buttons 12.
  • the alarm 11 may be of widely different type. It is merely to be adapted so as to be able to detect that a short-circuit takes place between two conductors, and, if so, to give an alarm.
  • connection of a vibrator for use by deaf patients d) connection of a radio transmitter for use in connection with monitoring from another room than the one m which the patient is present
  • connection of earphones which is important inter alia if several persons are present in the same room.
  • Fig. 7 shows another way of making the sheet with the transducer pad. As will be seen from the top in the figure, it consists of a transducer pad 1 with silver print prior to lamination with a liquid-repellent material.
  • the transducer pad consists of a single layer of non-woven material whose side with silver print, see the bottom of fig. 7, is placed against a plastics substrate which is bent to form edges 5 and 14 which are secured to the rear side 13 of the transducer pad e.g. by gluing.
  • the figure moreover shows an alarm 11 which is connected via wires to connection points close to the edges 5 and 14. This provides a sheet which, because of the edges 5, 14, to a great extent prevents liquid from flowing over the edges 5, 14. Further, a sheet is provided which is extremely strong and stable, and which does not slide or crease easily on the bed.
  • the rear side of the sheet may be formed with a self-adhesive material, which, however, does not prevent easy change of the sheet.
  • Fig. 8 shows a sanitary towel which is constructed like the sheet of fig. 7, with the rear side 13 of the transducer pad placed in a plastics substrate with bent edges.
  • Fig. 9 shows a variant of the embodiment of fig. 8 with connection coils 18 for attachment of an alarm.
  • the nu- meral 21 designates a bent edge which prevents liquid from running out of the sheet.
  • the non-woven material 20 may e.g. consist of a high-absorbing liquid-sucking material which may be composed of two layers of non-woven material 21, a high-sucking dry powder (not shown) being interposed between the layers. This results in an extremely high suction power and is pleasant to lie on.
  • the sheet shown in fig. 9 may be produced by applying an electrode of a suitable size on one side of the non-woven material, said electrode being then covered by a water barrier 20 which is bent as shown at 21.
  • fig. 10 shows a patient 18 placed on a bed which is equipped with a sheet according to the invention.

Abstract

A transducer pad for detecting enuresis nocturna (incontinence of urine) may be connected to an alarm (11), comprising a sensor (2) which, according to the invention, is made as a disposable item consisting of a non-woven material (8) having printed thereon two conductor paths. The transducer pad (2) may be constructed as part of a sheet, a diaper, briefs or a sanitary towel.

Description

A transducer pad comprising a sensor for detecting enuresis nocturna, sheets comprising the transducer pad, methods of producing the transducer pad and the sheets, and use thereof
The invention relates to a sensor for detecting enuresis nocturna and comprising a transducer pad having applied thereon a conductor pattern with two current paths adapted to be connected to an alarm which emits a signal when the current paths are short-circuited because of occurrence of urine on the transducer pad.
The invention moreover relates to sheets comprising a transducer pad, methods of producing the transducer pad and the sheets, and use thereof.
The condition enuresis nocturna (incontinence of urine) is a condition which occurs in children as well as adults.
Enuresis nocturna is an extremely unpleasant condition particularly for children and may especially have psychical consequences. Thus, children suffering from enuresis nocturna will frequently be cut off from sleeping the night with other children, as they are ashamed at being unable to avoid wetting the bed. It also involves some "trouble" for the parents of the children, since very frequent cleaning of the bed in which the child lies is necessary.
Treatment of children suffering from enuresis nocturna has been found to be most effective if a so-called conditioning apparatus is used, said apparatus being adapted such that when the child involuntarily wets the bed, an alarm will be given immediately. The child wakes up and is warned that it is time going to the bathroom. The conditioning apparatus consists of a transducer pad which has two electrical conductor paths provided on a sheetlike blanket which is connected to an alarm device. When the two conductors on the transducer pad are short-circuited because of the detection of urine, the conductors will be short-circuited, and an alarm will be given.
Such an apparatus is known e.g. from the published Brit- ish Patent Application No. 2 228 815 A. This known device comprises a sensor in the form of two separate electrical conductors which are printed on a water-repellent plastics material. Optionally, a cloth may be positioned between the patient and the water-repellent plastics ate- rial so that the patient to be treated will find it less uncomfortable lying on this substrate.
It is evident that each time the transducer pad of the known device has detected urine, the transducer pad has to be cleaned. In addition, one cannot rule out the possibility that some patients will sweat when they lie on a water-repellent substrate and, in some cases, may develop an eczema-like condition that may be extremely unpleasant.
Thus, there is a need for providing a transducer pad which comprises a sensor which is more comfortable, and which does not require cleaning each time urine is detected.
In other words, there is a need for developing a transducer pad which may be replaced by a new one each time urine has been detected. Accordingly, an object of the invention is to provide a transducer pad for detecting enuresis nocturna which is more comfortable and hygienic.
The object of the invention is achieved by a transducer pad of the type stated in the introductory portion of claim 1, which is characterized in that the transducer pad consists of a liquid-absorbing material on whose surface the conductor pattern has been applied by a printing method.
This provides a transducer pad which is not uncomfortable for the patients to lie on, and is moreover inexpensive to produce. It has furthermore been found that the use of a liquid-absorbing material greatly prevents false alarms that may occur if the patient sweats.
Expediently, as stated in claim 2, the water-absorbing material is formed by a non-woven material which has been found to be extremely suitable for use in connection with the printing of conductor paths.
When, as stated in claims 3 and 4, the conductor pattern is a conductive paste, such as a silver paste, optionally dissolved with a 50% diluent, it is ensured that the transducer pad may be adapted to various alarm systems, as the conductivity of the conductor paths may be adapted precisely to the sensitivity range of an alarm system. This also results in a saving in the production, since the amount of silver paste may be reduced.
As mentioned, the invention also relates to a sheet comprising a sensor having a transducer pad.
This sheet is characterized in that the sheet consists of the transducer pad with the conductor pattern which is formed by a non-woven material
a plastics substrate engaging the side of the transducer pad on which the conductor pattern has been printed.
This provides a sheet which may be produced as a disposable item which may be placed directly on a mattress, and the patient may be placed directly on top of the sheet. Further, an extremely stable substrate which does not crease, is provided hereby.
In an alternative embodiment, the sheet may be produced as defined more fully in claim 8.
As mentioned, the invention also relates to a method of producing a transducer pad having a conductor pattern for use in the detection of enuresis nocturna. This method comprises the steps of:
cutting a non-woven material to a desired length
making a printing frame with a template which is provided with the conductor pattern
applying a conductive paste, such as a silver paste, to the printing frame
- printing the paste on the non-woven material.
This method makes it possible to produce transducer pads in all possible sizes in a simple manner, as needed. Further, the invention relates to a method of producing a sheet. This method is characterized by comprising the steps of:
- cutting a non-woven material to a desired length
making a printing frame with a template which is provided with the conductor pattern
- applying a conductive paste, such as a silver paste, to the printing frame
printing the paste on the non-woven material
- heating the transducer pad for 1-15 minutes by conveyance through a heating tunnel which has a temperature of about 120 °C
attaching a liquid-repellent layer, such as a plas- tics substrate, to the side of the non-woven material on which the conductor pattern has not been printed
bending and gluing the liquid-repellent layer along an edge of the side of the non-woven material on which paste has not been printed.
In an alternative embodiment, the sheet may be produced by a method as defined more fully in claim 12.
Finally, the invention relates to a use of a transducer pad.
This use is defined more fully in claim 15. The use may very well be implemented in practice with the same method as in the production of the transducer pad in connection with the previously mentioned sheets.
Expedient embodiments of the invention are defined in the dependent claims .
The invention will now be explained more fully with reference to an embodiment shown in the drawing, in which
fig. 1 is a schematic view of the transducer pad according to the invention,
fig. 2 is an enlarged view of the printing of the conduc- tor pattern on the transducer pad according to the invention,
fig. 3 is a schematic view of a sheet with the transducer pad according to the invention,
fig. 4 is an extruded, schematic view of the structure of the sheet of fig 3,
fig. 5 is an enlarged view of contact points on the transducer pad according to the invention,
fig. 6 is a schematic view of an alarm device for use in connection with the transducer pad and the sheet according to the invention,
fig. 7 is a schematic view of the structure of a sheet with the transducer pad and a plastics substrate in an alternative embodiment of the invention,
fig. 8 is a schematic view of a sanitary towel with a plastics substrate according to the invention, fig. 9 is a schematic view of a variant of the embodiment of fig. 8, and
fig. 10 shows a patient in a bed provided with a transducer pad according to the invention.
In fig. 1, the transducer pad of the invention is gener¬ ally designated by 1. The transducer pad 1 consists of a non-woven material 2, which is a water-absorbing material. This material is provided with two conductor paths 3, 4 which have been applied by means of a pressure treatment. The two conductor paths terminate in two con¬ tact points 5, which are intended to be connected to an alarm (not shown) . The mode of operation of the transducer pad is such that when liquid touches the non-woven material 2, a short-circuit will take place between the conductor paths 4, 5 which can be detected by an alarm.
Fig. 2 shows a fraction of the transducer pad 1 in somewhat enlarged view. It also appears from the figure that the conductor path, here in the form of paste 6, is printed almost through the non-woven material . In other words, the silver paste is sucked down into the non-woven material, which means that it will not break after solidification.
The production of the transducer pad shown in figs. 1 and 2 is carried out in the following manner:
First, the non-woven material is cut to a desired length, depending on the use. This use may e.g. be in connection with the production of a sheet which is placed on a bed, or e.g. for the production of a pair of briefs, a sani- tary towel or a diaper, where it is needed to detect onset of urination. Then a printing frame is produced, with a template having the shape of the conductor pattern to be applied to the non-woven material. Conductive paste, e.g. silver paste, is now applied to the template in the printing frame. Expediently, the silver paste is diluted in a suitable manner, so that the electrical resistance in the silver paste may be varied for use in the adaptation to various alarm connections, which may have various sensitivity ranges. It is so that the more sensitive the alarm device is, the less resistance is required m the silver paste, which provides the advantage that less silver paste may be used in more sensitive devices, thereby achieving cost savings in the production of transducer pads. Printing is performed after the application of the silver paste, and the entire transducer pad is fed into a heating tunnel, which has a temperature of about 120 °C, for about 1-15 minutes.
It is thus a very quick and simple process for the production of transducer pads, which, of course, is a pre- requisite for using these as disposable items.
Fig. 3 shows a first embodiment of the use of the transducer pad according to the invention. In fig. 7, the numeral 7 designates a sheet on whose surface the trans- ducer pad 2 is arranged with its conductor paths 3, 4 and contact points 5. The sheet, cf. fig. 4, is constructed as a laminate consisting of four layers. In fig. 4, the upper layer 2 is the transducer pad itself shown m fig. 3. This layer is arranged such that the printing side faces downwards toward a layer 8, which is a very thin non-woven material which retains the liquid-absorbing layer 9 which is constructed in the same manner as a conventional diaper. Finally, the numeral 10 designates a water-repellent layer which may e.g. consist of a thin non-woven film of e.g. polyethylene. The four layers may be attached to each other by means of various known tech- niques, such as by gluing with strips of glue, spot gluing, welding, ultrasonic heat welding, single stitching, Velcro closure, etc.
Motifs attractive to children, such as bears, aircraft, cartoon characters, idols and the like, may also be printed on the sheet, so that it does not have a too sterile appearance.
Fig. 5 shows in enlarged view an example of how the contact points 5 on the transducer pad may be shaped. As will be seen in fig. 5, the contact points 5 are shaped as push-buttons, which may be connected to e.g. wires (not shown) which are connected to corresponding push- buttons in the alarm 11, which is shown schematically in fig. 6, and which also has push-buttons 12. The alarm 11 may be of widely different type. It is merely to be adapted so as to be able to detect that a short-circuit takes place between two conductors, and, if so, to give an alarm.
Examples of the possible settings and connections of an alarm which are particularly suitable in connection with the transducer pad of the invention, include the follow- ing ones:
a) automatic sensitivity regulation of the alarm to prevent false alarms because of perspiration
b) emission of various alarm sounds so that the sounds may be adapted to the individual patient
c) connection of a vibrator for use by deaf patients d) connection of a radio transmitter for use in connection with monitoring from another room than the one m which the patient is present
e) connection of earphones, which is important inter alia if several persons are present in the same room.
Fig. 7 shows another way of making the sheet with the transducer pad. As will be seen from the top in the figure, it consists of a transducer pad 1 with silver print prior to lamination with a liquid-repellent material. The transducer pad consists of a single layer of non-woven material whose side with silver print, see the bottom of fig. 7, is placed against a plastics substrate which is bent to form edges 5 and 14 which are secured to the rear side 13 of the transducer pad e.g. by gluing. The figure moreover shows an alarm 11 which is connected via wires to connection points close to the edges 5 and 14. This provides a sheet which, because of the edges 5, 14, to a great extent prevents liquid from flowing over the edges 5, 14. Further, a sheet is provided which is extremely strong and stable, and which does not slide or crease easily on the bed.
To ensure that the sheet is well supported on a bed, the rear side of the sheet may be formed with a self-adhesive material, which, however, does not prevent easy change of the sheet.
Fig. 8 shows a sanitary towel which is constructed like the sheet of fig. 7, with the rear side 13 of the transducer pad placed in a plastics substrate with bent edges.
Fig. 9 shows a variant of the embodiment of fig. 8 with connection coils 18 for attachment of an alarm. The nu- meral 21 designates a bent edge which prevents liquid from running out of the sheet. The non-woven material 20 may e.g. consist of a high-absorbing liquid-sucking material which may be composed of two layers of non-woven material 21, a high-sucking dry powder (not shown) being interposed between the layers. This results in an extremely high suction power and is pleasant to lie on. The sheet shown in fig. 9 may be produced by applying an electrode of a suitable size on one side of the non-woven material, said electrode being then covered by a water barrier 20 which is bent as shown at 21.
Finally, fig. 10 shows a patient 18 placed on a bed which is equipped with a sheet according to the invention.

Claims

P a t e n t C l a i m s
1. A transducer pad (1) comprising detection of enuresis nocturna and having applied thereon a conductor pattern
(3, 4) with two current paths adapted to be connected to an alarm (11), which emits a signal when the current paths are short-circuited because of occurrence of urine on the transducer pad, c h a r a c t e r i z e d in that the transducer pad (1) consists of a liquid-absorbing material (2) on whose surface the conductor pattern has been applied by a printing method.
2. A transducer pad according to claim 1, c h a r a c - t e r i z e d in that the water-absorbing material (2) is formed by a non-woven material.
3. A transducer pad according to claim 1 or 2, c h a r a c t e r i z e d in that the conductor pattern is a conductive paste (6), such as a silver paste.
4. A transducer pad according to claim 3, c h a r a c t e r i z e d in that the silver paste (6) is dissolved with a 50% diluent.
5. A transducer pad according to claims 1-4, c h a r a c t e r i z e d in that the transducer pad is a disposable item, which is exchanged each time the alarm has been activated.
6. A sheet comprising a transducer pad according to any one of claims 1-5, c h a r a c t e r i z e d m that the sheet consists of
- the transducer pad (1) with the conductor pattern which is formed by a non-woven material a plastics substrate which engages the side of the transducer pad on which the conductor pattern has been printed.
7. A sheet according to claim 6, c h a r a c t e r i z e d in that the plastics substrate is bent so as to form an edge on the side of the transducer pad which is opposite to the side on which the conductor pattern has been printed.
8. A sheet comprising a sensor according to any one of claims 1-5, c h a r a c t e r i z e d in that the sheet consists of a laminate of the following four layers:
the transducer pad (1) with the conductor pattern
a thin non-woven material (8) whose one side faces toward the side of the transducer pad on which the conductor pattern has been printed
a liquid-absorbing material (9) whose one side engages the other side of the thin non-woven material, and
a liquid-repellent layer (10) which engages the other side of the liquid-absorbing layer.
9. A method of producing a transducer pad (1) with a conductor pattern for use in the detection of enuresis nocturna and comprising the steps of:
cutting a non-woven material (2) to a desired length making a printing frame with a template which is provided with the conductor pattern
applying a conductive paste (6), such as a silver paste, to the printing frame
printing the paste (6) on the non-woven material.
10. A method according to claim 9, c h a r a c t e r - l z e d in that the silver paste (6) is diluted prior to application.
11. A method according to claims 9-10, c h a r a c t e r i z e d in that, after printing, the transducer pad (1) is conveyed through a heating tunnel m an oven, which has a temperature of about 120 "C, for between 1 and 15 minutes.
12. A method of producing a sheet with a conductor pat- tern for use m the detection of enuresis nocturna and comprising the steps of:
cutting a non-woven material (2) to a desired length
making a printing frame with a template which is provided with the conductor pattern
applying a conductive paste (6), such as a silver paste, to the printing frame
printing the paste (6) on the non-woven material
heating the transducer pad for 1-15 minutes by con- veyance through a heating tunnel which has a temperature of about 120 "C attaching a liquid-repellent layer, such as a plastics substrate, to the side of the non-woven material on which the conductor pattern has not been printed
bending and gluing the liquid-repellent layer along an edge of the side of the non-woven material on which paste has not been printed.
13. A method of producing a sheet according to claim 8, c h a r a c t e r i z e d by comprising the steps of:
cutting a non-woven material (2) to a desired length
making a printing frame with a template which is provided with the conductor pattern
- applying a conductive paste (6), such as a silver paste, to the printing frame
printing the paste (6) on the non-woven material
- heating the transducer pad for 1-15 minutes by conveyance through a heating tunnel which has a temperature of about 120 °C
attaching a thin non-woven material to the side of the transducer pad on which the paste has been applied
attaching one side of a liquid-absorbing material to other side of the thin non-woven material attaching a liquid-repellent material to the other side of the water-absorbing material.
14. A method according to claim 13, c h a r a c t e r - i z e d in that the attachment is performed by gluing, by ultra-sound, heat-welding, stitching, by Velcro- closure or similar methods.
15. Use of a transducer pad according to any one of the preceding claims in connection with a diaper, disposable briefs, a disposable sanitary towel or a disposable sheet .
PCT/DK1997/000406 1996-09-25 1997-09-25 A transducer pad comprising a sensor for detecting enuresis nocturna, sheets comprising the transducer pad, methods of producing the transducer pad and the sheets, and use thereof WO1998012997A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU43762/97A AU4376297A (en) 1996-09-25 1997-09-25 A transducer pad comprising a sensor for detecting enuresis nocturna, sheets comprising the transducer pad, methods of producing the transducer pad and the sheets, and use thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK1041/96 1996-09-25
DK104196 1996-09-25

Publications (1)

Publication Number Publication Date
WO1998012997A1 true WO1998012997A1 (en) 1998-04-02

Family

ID=8100338

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK1997/000406 WO1998012997A1 (en) 1996-09-25 1997-09-25 A transducer pad comprising a sensor for detecting enuresis nocturna, sheets comprising the transducer pad, methods of producing the transducer pad and the sheets, and use thereof

Country Status (2)

Country Link
AU (1) AU4376297A (en)
WO (1) WO1998012997A1 (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999036021A1 (en) * 1998-01-14 1999-07-22 Alvaro Cota Humidity detector blanket
WO1999051179A1 (en) * 1998-04-06 1999-10-14 Vittorio Bonacini Improvements to disposable diapers
WO2001054552A1 (en) * 2000-01-26 2001-08-02 The Procter & Gamble Company Disposable surface wipe article having a waste contamination sensor
US6399853B1 (en) 1998-06-29 2002-06-04 The Proctor & Gamble Company Disposable article having fecal component sensor
US6479727B1 (en) 1999-06-29 2002-11-12 Donald C. Roe Diagnostic panel
WO2004091676A1 (en) * 2003-04-10 2004-10-28 Thomas Riesinger Bandaging material
GB2408204A (en) * 2003-11-21 2005-05-25 Ucl Biomedica Plc Mattress protection
US7394391B2 (en) 2005-04-29 2008-07-01 Kimberly-Clark Worldwide, Inc. Connection mechanisms in absorbent articles for body fluid signaling devices
US7477156B2 (en) 2005-04-29 2009-01-13 Kimberly-Clark Worldwide, Inc. Connection mechanisms in absorbent articles for body fluid signaling devices
US7714728B2 (en) 2006-01-07 2010-05-11 Gt Angel, Llc Using RFID to prevent or detect falls, wandering, bed egress and medication errors
US8304598B2 (en) 2005-12-15 2012-11-06 Kimberly-Clark Worldwide, Inc. Garments with easy-to-use signaling device
GB2501561A (en) * 2012-04-28 2013-10-30 David Muir Godfrey Bed pad for absorbing and detecting urine
US8962909B2 (en) 2009-07-09 2015-02-24 Salusion Ip B.V. Moisture detecting module and a receiving unit
CN105434112A (en) * 2015-12-10 2016-03-30 王旋 Automatic reminding diaper
CN105869361A (en) * 2016-05-09 2016-08-17 绥化学院 Enuresis monitoring and alarm device
WO2019046178A1 (en) * 2017-09-01 2019-03-07 The Procter & Gamble Company Method of making an absorbent article with reactive compositions
EP3769684A1 (en) 2019-07-23 2021-01-27 Winncare France System and method for detecting incontinence in bedridden persons
DE102019123872A1 (en) * 2019-09-05 2021-03-11 B. Braun Melsungen Aktiengesellschaft Mattress with three-dimensional knitted fabric and moisture sensor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539559A (en) * 1982-03-29 1985-09-03 Hugh Kelly Portable, disposable warning device for detecting urine-wet undergarments
WO1996020681A1 (en) * 1995-01-03 1996-07-11 Gerstenzang, William, C. Moisture detecting liner for a diaper and a process for manufacture thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4539559A (en) * 1982-03-29 1985-09-03 Hugh Kelly Portable, disposable warning device for detecting urine-wet undergarments
WO1996020681A1 (en) * 1995-01-03 1996-07-11 Gerstenzang, William, C. Moisture detecting liner for a diaper and a process for manufacture thereof

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999036021A1 (en) * 1998-01-14 1999-07-22 Alvaro Cota Humidity detector blanket
WO1999051179A1 (en) * 1998-04-06 1999-10-14 Vittorio Bonacini Improvements to disposable diapers
ES2135354A1 (en) * 1998-04-06 1999-10-16 Vittorio Bonacini Improvements to disposable diapers
US6399853B1 (en) 1998-06-29 2002-06-04 The Proctor & Gamble Company Disposable article having fecal component sensor
US6501002B1 (en) 1999-06-29 2002-12-31 The Proctor & Gamble Company Disposable surface wipe article having a waste contamination sensor
US6479727B1 (en) 1999-06-29 2002-11-12 Donald C. Roe Diagnostic panel
WO2001054552A1 (en) * 2000-01-26 2001-08-02 The Procter & Gamble Company Disposable surface wipe article having a waste contamination sensor
WO2004091676A1 (en) * 2003-04-10 2004-10-28 Thomas Riesinger Bandaging material
GB2408204A (en) * 2003-11-21 2005-05-25 Ucl Biomedica Plc Mattress protection
GB2408204B (en) * 2003-11-21 2005-11-23 Ucl Biomedica Plc Mattress protection
US7394391B2 (en) 2005-04-29 2008-07-01 Kimberly-Clark Worldwide, Inc. Connection mechanisms in absorbent articles for body fluid signaling devices
US7477156B2 (en) 2005-04-29 2009-01-13 Kimberly-Clark Worldwide, Inc. Connection mechanisms in absorbent articles for body fluid signaling devices
US7956754B2 (en) 2005-04-29 2011-06-07 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
US7714728B2 (en) 2006-01-07 2010-05-11 Gt Angel, Llc Using RFID to prevent or detect falls, wandering, bed egress and medication errors
US8962909B2 (en) 2009-07-09 2015-02-24 Salusion Ip B.V. Moisture detecting module and a receiving unit
GB2501561A (en) * 2012-04-28 2013-10-30 David Muir Godfrey Bed pad for absorbing and detecting urine
GB2501561B (en) * 2012-04-28 2017-05-17 Muir Godfrey David Bed pad for absorbing and detecting urine
CN105434112A (en) * 2015-12-10 2016-03-30 王旋 Automatic reminding diaper
CN105869361A (en) * 2016-05-09 2016-08-17 绥化学院 Enuresis monitoring and alarm device
WO2019046178A1 (en) * 2017-09-01 2019-03-07 The Procter & Gamble Company Method of making an absorbent article with reactive compositions
EP3769684A1 (en) 2019-07-23 2021-01-27 Winncare France System and method for detecting incontinence in bedridden persons
FR3099044A1 (en) 2019-07-23 2021-01-29 Winncare France SYSTEM AND METHOD FOR DETECTION OF THE INCONTINENCE OF ALITTED PERSONS
DE102019123872A1 (en) * 2019-09-05 2021-03-11 B. Braun Melsungen Aktiengesellschaft Mattress with three-dimensional knitted fabric and moisture sensor

Also Published As

Publication number Publication date
AU4376297A (en) 1998-04-17

Similar Documents

Publication Publication Date Title
WO1998012997A1 (en) A transducer pad comprising a sensor for detecting enuresis nocturna, sheets comprising the transducer pad, methods of producing the transducer pad and the sheets, and use thereof
US5790036A (en) Sensor material for use in detection of electrically conductive fluids
US4356818A (en) Diaper with moisture detecting apparatus
EP0663097B1 (en) System for detection of electrically conductive fluids
US6097297A (en) Wetness awareness training device
EP3685811B1 (en) Urine-detection device with adhesive tape and emitter sensor
US7755497B2 (en) Urine sensor
US5291181A (en) Wet bed alarm and temperature monitoring system
JPH0330099Y2 (en)
JP2000093448A (en) Sensor for diaper and diaper containing the same
US5459452A (en) Wet bed and patient wander alarm system with snap-on and magnet transmitter assembly
US5043704A (en) Enuresis avoidance training aid
AU3070597A (en) Moisture detecting devices such as for diapers and diapers having such devices
WO1997042613A9 (en) Moisture detecting devices such as for diapers and diapers having such devices
JP2008520399A (en) A clever disposable diaper with a hygienic transmitter
SE513206C2 (en) Urine detection and signaling device for use in a diaper
EP3143975B1 (en) Smart nursing consumable, rollable sensor module thereof and manufacturing method thereof
JP2007296024A (en) Electronic diaper system
JPH11295250A (en) Sensor for diaper
JP4037807B2 (en) Diaper system that can detect wetness
JPH09294762A (en) Sensor for diaper
JP3136438B2 (en) Wetness detection sensor and diaper wetness notification device using the same
JP4002224B2 (en) Diaper capable of detecting wetness and method of manufacturing the same
JP2021067660A (en) Detection sensor and detection system for water leakage
JPH10295726A (en) Disposable diaper

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AT AU AZ BA BB BG BR BY CA CH CN CU CZ CZ DE DE DK DK EE EE ES FI FI GB GE GH HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SK SL TJ TM TR TT UA UG US UZ VN YU ZW AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH KE LS MW SD SZ UG ZW AT BE CH DE DK ES FI

121 Ep: the epo has been informed by wipo that ep was designated in this application
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: CA

NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 1998515176

Format of ref document f/p: F

122 Ep: pct application non-entry in european phase