WO2011049010A1 - 排便検出装置 - Google Patents
排便検出装置 Download PDFInfo
- Publication number
- WO2011049010A1 WO2011049010A1 PCT/JP2010/068123 JP2010068123W WO2011049010A1 WO 2011049010 A1 WO2011049010 A1 WO 2011049010A1 JP 2010068123 W JP2010068123 W JP 2010068123W WO 2011049010 A1 WO2011049010 A1 WO 2011049010A1
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- WIPO (PCT)
- Prior art keywords
- defecation
- urine
- detection device
- temperature
- temperature sensor
- Prior art date
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Classifications
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- 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
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
- A61F5/451—Genital or anal receptacles
-
- 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
- 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
- A61F13/84—Accessories, not otherwise provided for, for absorbent pads
-
- 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
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
- A61F5/441—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices having venting or deodorant means, e.g. filters ; having antiseptic means, e.g. bacterial barriers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
Definitions
- the present invention relates to a defecation detection device.
- an apparatus for detecting defecation and urination based on a signal output from a temperature sensor provided in a diaper is already known (for example, see Patent Document 1).
- Such a device determines whether the excreted matter is feces or urine based on the difference in transition in the temperature rise detected by a signal output from a temperature sensor provided in the diaper. Judging.
- an apparatus that includes a suction device that sucks urine and has a function of sucking urine when urination is detected.
- a suction device that sucks urine and has a function of sucking urine when urination is detected.
- the control unit may erroneously determine that stool or urine has been discharged, and may not be able to accurately determine the presence or absence of defecation. There is a problem that there is.
- the present invention has been made in view of such problems, and an object of the present invention is to provide a defecation detection device that can appropriately detect the presence or absence of defecation without being affected by the operation of the urine suction device. It is to provide.
- the main invention for achieving the above object is: A defecation and urine receiving member for receiving defecation and urination opposite to the body; A urine suction device that is detachably provided on the defecation and urine receiving member and capable of sucking urine excreted by the defecation and urine receiving member; A temperature sensor provided at a defecation position for receiving defecation of the defecation urine receiving member; A control unit that detects the presence or absence of the defecation based on a signal that excludes a signal within a predetermined time after the operation of the urine suction device among signals output from the temperature sensor. Defecation detection device.
- a defecation detection device that can appropriately detect the presence or absence of defecation without being affected by the operation of the urine suction device.
- FIG. 3 is a diagram showing a cut surface along the line AA in FIG. 2.
- FIG. 3 is a diagram showing a cut surface along the line BB in FIG. 2.
- FIG. 6 is a sectional view taken along the line CC in FIG. 5.
- FIG. 6 is a sectional view taken along line DD in FIG. 5.
- FIG. 6 is a sectional view taken along line EE in FIG. 5. It is a top view of the electrode part in the state which a part of insulating coating peeled and the power supply electrode was exposed.
- a defecation and urine receiving member that receives defecation and urination facing the body, a urine suction device that is detachably provided on the defecation and urine receiving member, and capable of sucking urine excreted by the defecation and urine receiving member, and the defecation and urination
- a control unit that detects the presence or absence of the stool.
- the presence or absence of defecation is detected based on the signal output from the temperature sensor from which the signal within a predetermined time after the operation of the urine suction device is excluded, the presence or absence of defecation is detected.
- the determination is not affected by a temperature change caused by the operation of the urine suction device. For this reason, it is possible to detect the presence or absence of defecation appropriately.
- the defecation detection device includes a urine detection unit that detects urine excreted in the defecation / urine receiving member, and the control unit detects the urine in the urine suction device when the urine detection unit detects the urine. It is desirable to suck the urine from the defecation / urine receiving member. According to such a defecation detection device, when the urine detection unit detects that urine is excreted, the urine suction device operates, so that the wearer can continue to wear comfortably. At this time, since the presence or absence of defecation is detected based on the signal output from the temperature sensor from which the signal within a predetermined time after the operation of the urine suction device has been eliminated, the stool is appropriately defecation while having the urine suction device. It is possible to detect the presence or absence.
- the control unit periodically operates the urine suction device.
- the urine suction device is periodically operated, but based on the signal output from the temperature sensor from which the signal within a predetermined time after the urine suction device is operated is excluded. Since the presence / absence of defecation is detected, it is possible to appropriately detect the presence / absence of defecation while periodically operating the urine suction device.
- the control unit does not detect the presence or absence of the defecation when the absolute temperature detected by the temperature sensor is lower than a predetermined temperature.
- the signal output from the temperature sensor varies greatly. For this reason, if a temperature change with respect to a greatly reduced temperature is a determination target, there is a high possibility of erroneous determination. For this reason, when the absolute temperature detected by the temperature sensor is equal to or lower than a predetermined temperature, it is possible to suppress erroneous detection by not detecting the presence or absence of defecation.
- the predetermined temperature is a human body temperature. Excreted feces are higher than human body temperature. For this reason, when the absolute temperature detected by the temperature sensor is lower than the human body temperature, it is possible to further suppress false detection by not detecting the presence or absence of defecation.
- the control unit detects that the temperature has risen from the signal output from the temperature sensor, and then either stool or urine is excreted based on the rate at which the temperature falls. It is desirable to determine whether it has been done.
- the feces and urine When feces and urine are excreted, the feces and urine have a temperature higher than the body temperature, but due to the difference in heat capacity, the temperature that decreases with the passage of time after excretion, that is, the rate of temperature decrease differs. For this reason, as in the defecation detection device, stool and urine are detected based on the rate at which the temperature decreases after detecting that the temperature has risen in the signal output from the temperature sensor provided in the defecation / urine receiving member. As a result of the control unit determining that any of these has been excreted, it is possible to more accurately determine whether the discharged is stool or urine.
- the control unit detects an increase in temperature based on a signal output from the temperature sensor after determining that the stool is excreted, and uses the increase amount. It is desirable to determine the amount of excretion.
- the signal output from the temperature sensor differs in temperature detected depending on the amount of excreted feces. For example, when the amount of stool is large, the temperature sensor is covered with the stool so that the detected temperature is high. When the amount of stool is small, a part of the temperature sensor is covered or not covered. Therefore, the detected temperature is lower than when the amount of feces is large.
- the amount of increase in temperature is detected based on the signal output from the temperature sensor, and the amount of excretion is detected using the amount of increase. It is possible to determine not only the presence or absence of stool excretion, but also the amount of stool excretion.
- the temperature sensor is preferably covered with a sheet material, and the temperature of the stool is preferably detected via the sheet material. According to such a defecation detection device, since the excreted stool does not directly contact the temperature sensor, the signal output from the temperature sensor is likely to change according to the amount of excretion of the stool. For this reason, it is possible to more accurately determine the amount of feces excreted.
- the sheet material interposed between the temperature sensor and the stool is a non-woven fabric, an air layer is formed between the temperature sensor and the stool. For this reason, when the amount of stool discharge is large, the air layer is crushed by the weight of the stool, the temperature is detected at a position closer to the stool and the temperature sensor, and when the amount of stool discharge is small, Since the temperature of the stool is detected through the air layer, it is possible to more accurately determine the amount of feces excreted.
- a first temperature sensor provided at a defecation position for receiving defecation of the defecation and urine receiving member, and a non-defecation position at which the defecation and urine receiving member does not receive defecation
- a second temperature sensor provided, and the controller is configured to control feces and urine based on data obtained by removing a signal output from the second temperature sensor from a signal output from the first temperature sensor. It is desirable to determine that either has been excreted.
- the temperature of the first temperature sensor provided at the defecation position of the defecation / urine receiving member rises rapidly in the vicinity of the stool when the stool is excreted.
- the second temperature sensor provided at the non-defecation position of the defecation / urine receiving member is disposed away from the stool even if the stool is excreted, the temperature does not increase rapidly due to the excreted stool. .
- the first temperature sensor and the second temperature sensor are provided in a single defecation / urine receiving member, the effects of temperature changes caused by factors other than defecation between the defecation / urine receiving member and the body are almost the same. Will receive.
- the defecation position is, for example, a position where the stool accumulates when the urinating urine receiving member is worn by a care recipient who needs bedridden care and excretes stool, specifically, It corresponds to the position facing the anus of the care recipient who is sleeping and the rear side of the anus.
- the non-defecation position corresponds to, for example, a position obtained by removing the defecation position from the defecation urine receiving member.
- the second temperature sensor is configured such that when the defecation / urine receiving member faces the body, a portion facing the crotch, or a portion facing the crotch and a position between the defecation position It is desirable to be arranged in.
- the defecation determination device is used in a sleeping state. The At this time, when the stool is excreted while the care recipient is sleeping, the stool accumulates below the body, that is, behind the body.
- the second temperature sensor capable of detecting a temperature change due to factors other than defecation is preferably provided as close to the first temperature sensor as possible even in the non-defecation position, and at a position where the temperature sensor is not covered by feces. For this reason, by arranging the second temperature sensor between the crotch part or between the part facing the crotch and the defecation position, the second temperature sensor is not covered by the feces, and It is possible to more reliably detect temperature changes due to factors other than defecation in the one temperature sensor. Therefore, it is possible to more accurately determine that either feces or urine has been excreted.
- the first temperature sensor and the second temperature sensor are formed on a single insulating synthetic resin film. According to such a defecation detection device, since the first temperature sensor and the second temperature sensor are formed on one insulating synthetic resin film, the first temperature sensor and the second temperature sensor are individually attached. It is not necessary and the first temperature sensor and the second temperature sensor can be easily attached. In addition, since the first temperature sensor and the second temperature sensor are formed of an insulating synthetic resin film, the first temperature sensor and the second temperature sensor are thin and flexible so that the user can use them without feeling uncomfortable. It is.
- This stool detection apparatus has a notification unit that notifies that it has been determined that stool is excreted, and the control unit operates the notification unit when determining that stool has been excreted. It is desirable to make it. According to such a defecation detection device, when it is determined that stool is excreted, for example, it is possible to notify an assistant that it has been determined that stool has been excreted.
- the control unit does not operate the notification unit when it is determined that the excretion amount of the stool is less than a predetermined amount. For example, when the notification unit operates even when a very small amount of stool is excreted and the defecation / urine receiving member is not required to be replaced, the caregiver performs the defecation / urine receiving member replacement operation even when it is not necessary. For this reason, like the above defecation detection device, when there is little excretion of feces and it is not necessary to replace the defecation / urine receiving member, it is possible to reduce the burden on the caregiver or the like by not operating the notification unit. .
- the urine detection unit is a pair of electrodes provided on the insulating synthetic resin film at a distance from each other, and between the pair of electrodes due to the excreted urine It is desirable to detect that urine has been excreted based on the change in voltage.
- the urine detection unit since the urine detection unit is a pair of electrodes provided on the insulating synthetic resin film at a distance from each other, the urine detection unit can be provided at low cost.
- the electrode which makes a pair is thin and is provided in the insulating synthetic resin film which has flexibility, a user can use it without feeling uncomfortable.
- the electrodes forming a pair separated from each other have increased conductivity due to urine, it is possible to detect urine reliably by detecting urine based on a change in voltage between the electrodes.
- FIG. 1 is a configuration diagram of an automatic urine processing apparatus 100 according to the present embodiment.
- the automatic urine treatment apparatus 100 includes a urine sucking member 102 shown partially broken, and a controller 101 including a vacuum suction apparatus 100a as a urine suction apparatus to which the urine sucking member 102 is detachably connected.
- the urine-absorbing member 102 has an inner side facing the wearer's (not shown) skin and an outer side facing away from the wearer's clothes.
- the pants 300 are worn together and the inner surface of the pants 300 can be in close contact with the skin.
- the pants 300 has a front waistline region 301, a back waistline region 302, and a crotch region 303, and uses, for example, a mesh-type fabric so that the outer surface side can be easily seen through. Preferably there is.
- the urine absorbing member 102 should be worn using an appropriate member such as an open diaper, a pant-type diaper, a diaper cover, or an incontinence patient pant that is fixed with a tape in addition to the illustrated pant 300. Can do.
- the automatic urine processing apparatus 100 is an apparatus that can collect and process the urine excreted by the wearer on the urine absorbing member 102.
- the urine absorbing member 102 has a container portion 102 a and a detection portion 150.
- the container portion 102a can receive the excreted urine while facing the skin near the wearer's urethral opening, and the detection unit 150 provides the urine with the urine detection unit 102b that detects that the urine has been excreted.
- a thermistor 145 as a fecal detection unit to be detected (see FIG. 5).
- the vacuum suction device 100a includes a joint member 104 connected to the container portion 102a, a urine guiding tube 106, a urine tank 106a, a pump unit 108, an electric wiring 116, and the like.
- the pump unit 108 includes a control circuit 108a as a control unit that processes an electric signal sent from the detection unit 150 via the electric wiring 116, a suction pump 108b whose operation is controlled by the control circuit 108a, and the like.
- the urinary tube 106 is connected to the urine discharge opening 114 formed in the peripheral wall portion of the container 112 of the container portion 102a through the joint member 104.
- the electrical wiring 116 extending from the pump unit 108, power is supplied to the urine detection electrodes 218a and 218b (see FIG. 5) and the thermistor 145 as the paired electrodes, which are the urine detection unit 102b of the detection unit 150.
- a clip 120 for electrically connecting the power supply electrodes 143a, 143b, 143c to be supplied and the electric wiring 116 is attached.
- a detection signal is sent from the urine detection unit 102b to the pump unit 108, and the suction pump 108b is operated to suck the air in the urine tank 106a. Can be sucked into the container 112, and the sucked urine can be further sucked through the joint member 104 and the urine guide tube 106 and collected in the urine tank 106a. Further, a signal output from the thermistor 145 provided in the urine sucking member 102 is sent to the pump unit 108, and an alarm lamp as a notification unit based on the signal received by the control circuit 108a included in the pump unit 108. The caregiver can be notified of the presence of stool by blinking 504.
- the automatic urine processing apparatus 100 is configured to ventilate the space between the urine sucking member 102 and the body by operating the suction pump 108b periodically, for example, every hour, regardless of detection of urination. .
- the clip 120 is positioned on the ventral side.
- the container 112 of the urine-absorbing member 102 extends mostly in the vertical direction on the front side of the wearer's body, the inside faces the wearer's urethral opening and the surrounding skin, and the lower end is the inner surface of the crotch region 303. It is worn in a state of extending gently toward the anus and reaching the back of the body while gently curving along.
- the urine sucking member 102 is preferably worn when the wearer is bedridden, and the urine sucking member 102 is located in the crotch region 303 at a position near the rear waist region 302. Is formed. For this reason, the urine absorbing member 102 can receive not only urine but also discharged stool.
- FIG. 2 is a plan view showing the inner surface side of the urine absorbing member 102
- FIG. 3 is a view showing a cut surface along the line AA in FIG. 2
- FIG. 3 is a diagram showing a cut surface along the line BB in FIG. 2, and in FIG. 3 and FIG. 4, the members that should overlap in the thickness direction R of the urine absorbing member 102 are separated from each other except for a part. Shown in state.
- the thickness direction R is also the depth direction of the container portion 102a.
- the urine-absorbing member 102 has a length direction P that matches the front-rear direction of the wearer's body and a width direction Q that is orthogonal to the length direction P, and is wide in the vicinity of both ends of the length direction P, The width is narrow at the part.
- the urine-absorbing member 102 also has a thickness direction R, and the upper side in FIG. 3 of the container 112 (skin side when worn) is in order from the lower side (clothing side when worn) in the thickness direction R.
- a plurality of sheet-like members composed of a liquid-permeable impermeable sheet 124, a diffusion sheet 126, a cushion sheet 128, an electrode portion 118, a spacer 130, a filter 132, and a liquid-permeable skin-contacting sheet 134 as a sheet material,
- a pair of breakwaters 136 overlap the skin rest sheet 134.
- the air-impermeable sheet 124 and the diffusion sheet 126 are integrated with the container 112 to form a container portion 102a.
- the cushion sheet 128, the electrode portion 118, the spacer 130, the filter 132, and the skin contact sheet 134 overlap with each other to form the detection unit 150.
- a portion excluding the electrode portion 118 from the urine absorbing member 102 corresponds to a defecation and urine receiving member that receives defecation and urination.
- the container 112 has a tray shape, is formed of a soft elastic material such as soft polyethylene or silicon rubber, and has flexibility to bend in both the length direction P and the width direction Q. It is designed to withstand deformation caused by negative pressure that acts when suctioning urine at 108b.
- the breathable sheet 124 is joined to the peripheral flange portion 152 of the container 112 at the portion 112a by adhesion or welding.
- the depth direction of the container 112 is the same as the thickness direction R.
- the non-breathable sheet 124 has high liquid permeability but does not allow air to pass through at all or covers the opening at the top of the container 112 as shown in FIG.
- the container 112 having the air-impermeable sheet 124 easily becomes negative pressure when the suction pump 108b of the pump unit 108 is operated, and can quickly suck urine.
- Air-impermeable sheet 124 for example, an SMS nonwoven fabric consisting of 22 g / m 2 spunbond nonwoven fabric and 10 g / m 2 meltblown non-woven fabric and 22 g / m 2 spunbond nonwoven, preferably hydrophilic treatment with a surfactant Can be used.
- the air permeability of the non-breathable sheet 124 is 0 to 100 cc / cm 2 / sec in a wet state when measured according to method A of the air permeability measurement method defined in Section 6.27.1 of JIS L 1096. Preferably, it is in the range of 0 to 50 cc / cm 2 / sec. Further, in the dry state, it is in the range of 20 to 200 cc / cm 2 / second, preferably 20 to 100 cc / cm 2 / second, and more preferably 20 to 50 cc / cm 2 / second.
- the wet state when measuring the air permeability means a state where the moisture content of the non-breathable sheet 124 calculated by the following formula (1) is 100% or more, and the dry state means the non-breathable property.
- the state of the sheet 124 when the sheet 124 is left in a room at 20 ° C. and RH 50% for 24 hours or more is meant.
- Moisture content (wet sheet weight ⁇ dry sheet weight) / (dry sheet weight) Formula (1)
- the diffusion sheet 126 is formed of a liquid-permeable sheet piece such as a nonwoven fabric containing hydrophilic fibers, for example, rayon fibers.
- a liquid-permeable sheet piece such as a nonwoven fabric containing hydrophilic fibers, for example, rayon fibers.
- the urine is transferred to the surface (skin) side of the breathable sheet 124. It is used to quickly diffuse and make the breathable sheet 124 wet over a large area.
- the air-impermeable sheet 124 becomes wet, it becomes easy to suck the urine into the container 112 under a negative pressure. It is preferable that the diffusion sheet 126 is intermittently joined to the non-breathable sheet 124 so as not to impede mutual liquid permeability.
- the cushion sheet 128 is formed of a liquid-permeable sheet piece such as a thermal bond nonwoven fabric having a basis weight of 20 to 30 g / m 2 , for example, and can quickly infiltrate urine.
- the urine present in the adhesive sheet 124 is prevented from flowing back toward the electrode portion 118.
- the cushion sheet 128 can also be preliminarily stacked with sheet-like members such as the electrode portion 118, the spacer 130, the filter 132, and the like in the manufacturing process of the urine-absorbing member 102. It becomes a carrier member for placing in the position.
- the cushion sheet 128 is preferably joined intermittently to the diffusion sheet 126 so as not to impede mutual liquid permeability.
- the electrode unit 118 is mounted with a thin film thermistor (hereinafter referred to as a thermistor) for detecting feces, and an electrode having a required shape for detecting urine and an electrode for supplying power to the thermistor use conductive ink. It is printed on a synthetic resin film. Details of the structure of the electrode unit 118 will be described later.
- the electrode portion 118 can be bonded to the cushion sheet 128.
- thermistor 145 suitable for the automatic urine processing apparatus 100 a thermistor having a small heat capacity and easily affected by the surrounding temperature is preferable.
- thermistor ET-103 manufactured by Ishizuka Electronics Co., Ltd. can be cited as an example.
- the spacer 130 has the largest thickness among the sheet-like members in the detection unit 150, and is formed of a net-like liquid-permeable sheet piece.
- urine may remain on the skin contact sheet 134 even after the urine is sucked, and the skin contact sheet 134 may be in a wet state due to the urine.
- the skin contact sheet 134 is directly or indirectly brought into contact with the electrode unit 118 under the action of body pressure or the like, causing the automatic urine processing apparatus 100 to malfunction.
- the spacer 130 is a member that separates the electrode portion 118 and the filter 132 in the thickness direction R in order to prevent such a malfunction, has no urine absorption capability, is water-repellent, and has poor air permeability.
- Such a spacer 130 can be made of a net having a thickness of 0.5 to 1 mm made of a flexible synthetic resin such as ethylene vinyl acetate, and inhibits the liquid permeability of the cushion sheet 128. It is preferable to join so that it does not occur.
- the filter 132 is for preventing a situation in which a solid content contained in urine adheres to the electrode unit 118 and the electrode unit 118 is permanently energized, and has a higher ventilation than the air-impermeable sheet 124. It is formed by a sheet piece having a property and liquid permeability, more preferably a non-woven piece. The filter 132 can be joined to the spacer 130 so as not to impede mutual liquid permeability.
- the skin contact sheet 134 is provided on the surface (skin) side of the filter 132.
- the skin contact sheet 134 comes into contact with the skin in a state of facing the urethra mouth of the wearer and the skin in the vicinity thereof.
- the skin contact sheet 134 is formed of a sheet piece having flexibility and liquid permeability, such as a thermal bond nonwoven fabric having a basis weight of 15 to 25 g / m 2 . Similar to the cushion sheet 128, the skin rest sheet 134 is capable of instantaneously penetrating urine at the initial stage of urination, and intermittently so as not to impede mutual liquid permeability with respect to the filter 132. It is preferable that they are joined together.
- the skin application sheet 134 may be hydrophilic or water repellent.
- the breakwaters 136 form a pair of left and right as shown in FIGS. 2 and 3, and prevent urine from leaking from the urine absorbing member 102 by flowing in the width direction Q on the skin rest sheet 134.
- 3 has an outer edge 136c positioned closer to the outer side of the urine absorbing member 102 joined to the skin rest sheet 134, while an inner edge 136d positioned closer to the inner side is attached to the skin rest sheet 134.
- An elastic member 136b such as a rubber thread is attached to the elastic member 136b in the length direction P without being joined.
- a sheet 136 a forming a pair of leakage barriers 136 covers the bottom of the container 112.
- the sheet 136a in the breakwater 136 is preferably liquid-impervious, and a flexible thermoplastic synthetic resin film, a composite sheet of the film and a nonwoven fabric, or the like can be used therefor.
- the leakage barrier 136 (see FIG. 2) when the urine absorbing member 102 is viewed in plan is covered at the upper end and the lower end with the first and second end sheets 138 and 140, respectively.
- FIG. 5 is a plan view of the electrode portion 118 used in FIGS.
- the electrode portion 118 includes an insulating film portion 260 formed of a synthetic resin film, a pair of urine detection electrodes 218a and 218b formed on one surface of the film portion 260, and two electrodes mounted on the same surface.
- the thermistor has power supply electrodes 143a, 143b, 143c for supplying power to the thermistor, and an insulating coating 170 that covers most of these electrodes 218a, 218b, 143a, 143b, 143c.
- the film portion 260 has a strip shape extending in the length direction P, but has two rectangular openings 171 formed by cutting the center portion in the width direction Q long in the length direction P.
- Such a film portion 260 has an upper end portion 266 for gripping with the clip 120 on the upper side in FIG. 5, and below the upper end portion 266 is a center line L1-L1 that bisects the width of the electrode portion 118.
- the ends of the urine detection electrodes 218a and 218b and the ends of the power supply electrodes 143a, 143b, and 143c are exposed.
- eight non-painted portions 169a are formed on the insulating coating 170 on the side portions 267a and 267b.
- the non-painted portions 169a are provided side by side in the width direction Q, and are provided at appropriate intervals in the length direction P. From the non-painted portions 169a, the urine detection electrodes 218a and 218b are urine.
- the urine detection electrodes 218a and 218b are partially exposed in order to be able to get wet.
- urine detection electrodes 218a and 218b extending from the upper end 266 to the lower end 268 through the side portions 267a and 267b are formed on one surface of the film portion 260, and folded at the lower end 268.
- the sides of the opening 171 on the lower end portion 268 side are routed along the length direction from the inside, and are connected by the relay portion 265.
- a portion that is folded back at the lower end portion 268 of the urine detection electrodes 218a and 218b and is connected to each other at the relay portion 265 is a disconnection detection circuit 250 described later.
- the urine detection electrodes 218a and 218b are formed on the insulating coating 170 except for the end on the upper end 266 side, that is, the end connected to the pump unit 108 side when held by the clip 120 and the non-painted portion 169a. Covered.
- power supply electrodes 143a, 143b, 143c passing from the upper end portion 266 to the side portions 267a, 267b are formed.
- the power supply electrodes 143a and 143b have end portions on the upper end side from the urine detection electrodes 218a and 218b, and the side portions 267a and 267b are formed outside the urine detection electrodes 218a and 218b in the width direction of the electrode portion 118. ing.
- the power supply electrode 143c is formed so that only the upper end portion is overlapped with one of the urine detection electrodes 218a and 218b exposed at the upper end portion 266, and the portions other than the upper end portion are overlapped.
- the urine detection electrodes 218a and 218b are formed on the insulating coating 170 and extend to the side portion 267b through the inside of the urine detection electrodes 218a and 218b.
- the relay unit 265 it is branched into two. One branched to the relay portion 265 side extends straight along the length direction P of the electrode portion 118, and the other passes through the relay portion 265 between the urine detection electrode 218 a and the opening 171 on the lower end portion 268 side. It extends to.
- the end of the power supply electrode 143a on the lower end portion 268 side and the end of the power supply electrode 143c on the branched lower end portion 268 side are the front and rear of the body when the urine absorbing member 102 is worn at the side portion 267a.
- the end on the lower end 268 side of the power supply electrode 143b and the end on the lower end 268 side that extends straight of the power supply electrode 143c are slightly behind the crotch that is the center in the direction. It is formed so as to reach the rear side from the position facing the anus of the wearer.
- the power supply electrodes 143a, 143b, and 143c are all covered with an insulating coating 170 except for an end on the upper end 266 side and an end on the lower end 268 side.
- the unpainted portions 169a of the urine detection electrodes 218a and 218b are exposed without being covered by the insulating coating 170 provided in two layers.
- the power supply electrode 143a has an end portion on the lower end portion 268 side and an end portion on the branched lower end portion 268 side of the power supply electrode 143c, and an end portion on the lower end portion 268 side of the power supply electrode 143b and the power supply.
- a thermistor 145 is provided so as to extend over the end of the electrode 143c that extends straight on the lower end 268 side, and the surface thereof is covered with a protective sheet (not shown).
- the thermistor 145 provided on the crotch side is referred to as a front thermistor 145a
- the thermistor 145 provided on the anus is referred to as a rear thermistor 145b.
- the position where the front thermistor 145a is provided corresponds to a non-defecation position where no defecation is received because it is above the anus in the state where the care recipient who is wearing is sleeping on his back
- the rear thermistor 145b Since the position where is provided is below the anus, it corresponds to a defecation position for receiving defecation. Therefore, the front thermistor 145a corresponds to the second temperature sensor, and the rear thermistor 145b corresponds to the first temperature sensor.
- FIG. 6 is a cross-sectional view taken along the line CC in FIG. 5 and shows the exposed portion 102c of the urine detection electrodes 218a and 218b.
- the power supply electrodes 143a, 143b, and 143c are covered with an insulating coating 170.
- FIG. 7 is a cross-sectional view taken along the line DD in FIG. 5 and shows a state where the front thermistor 145a is mounted.
- the disconnection detection circuit 250, the urine detection electrodes 218a and 218b, the power supply electrode 143b, and the power supply electrode 143c on the side portion 267b side are covered with the insulating coating 170, and the front thermistor 145a is covered with the power supply electrode.
- FIG. 8 is a cross-sectional view taken along the line EE in FIG. 5 and shows a state in which the rear thermistor 145b is mounted.
- the disconnection detection circuit 250 and the urine detection electrodes 218a and 218b are covered with the insulating coating 170, and the rear thermistor 145b is connected to the power supply electrode 143b and the power supply electrode 143c on the side portion 267b side.
- the rear thermistor 145b is connected to the power supply electrode 143b and the power supply electrode 143c on the side portion 267b side.
- FIG. 9 is a plan view of the electrode portion 118 in a state where a part of the insulating coating 170 is peeled and the power supply electrodes 143a, 143b, and 143c are exposed.
- a pair of urine detection electrodes 218a and 218b are formed on the side portions 267a and 267b of the film portion 260 so as to extend in the length direction P in parallel with each other. These urine detection electrodes 218a and 218b are exposed at the non-painted portion 169a of FIG.
- a disconnection detection circuit 250 is formed between the urine detection electrode 218a and the urine detection electrode 218b.
- the disconnection detection circuit 250 is electrically connected to the lower ends of the urine detection electrodes 218a and 218b and extends along the edge of the opening 171 as shown in the figure. Further, power supply electrodes 143a and 143b for supplying power to the front thermistor 145a and the rear thermistor 145b to the outside of the urine detection electrode 218a and the urine detection electrode 218b are arranged in the width direction Q on the side portions 267a and 267b of the film portion 260. Are formed in a manner extending in the length direction P with a space therebetween, and a thermistor 145 is provided at the tip thereof.
- a polyester film having a thickness of 50 to 100 ⁇ m is preferably used for the film part 260.
- the urine detection electrodes 218a and 218b can be obtained by printing a required shape on the film portion 260 using conductive ink or conductive paint.
- the conductive ink and the conductive paint include, for example, 3 to 7% by weight of carbon black, 10 to 30% by weight of artificial graphite such as carbon graphite, an appropriate amount of silver powder, and the like as the conductive material.
- Each of the urine detection electrodes 218a and 218b is made, for example, to have a width of 0.5 to 2 mm and a resistance of 150 k ⁇ or less.
- the disconnection detection circuit 250 can be obtained, for example, by printing a required shape on the film portion 260 using an ink containing 3 to 7% by weight of carbon black and 5 to 10% by weight of artificial graphite.
- the disconnection detection circuit 250 has a resistance value far higher than the resistance values of the urine detection electrodes 218a and 218b.
- the preferred disconnection detection circuit 250 has a width of 0.3 to 1 mm and a resistance value of 2 to 2. It is made to be about 10M ⁇ .
- the power supply electrodes 143a, 143b, and 143c may be formed by vacuum deposition of aluminum in addition to the ink and paint similar to the urine detection electrodes 218a and 218b.
- the power supply electrodes 143a, 143b, and 143c are also made to have a width of, for example, 0.5 to 2 mm, and an unpainted portion has an appropriate width at the tip of the power supply electrodes 143a, 143b, and 143c so that the thermistor 145 can be mounted. Is made.
- a weak current is supplied from the power supply 116a (see FIG. 1) included in the controller 101 to the urine detection electrodes 218a and 218b, and the thermistor
- the power that can operate 145 is supplied to the thermistor 145 through the power supply electrodes 143a, 143b, and 143c.
- the electrical resistance between the urine detection electrode 218a and the urine detection electrode 218b or other physical quantity equivalent to the electrical resistance and the change in the electrical resistance output from the thermistor 145 are continuous. Measured intermittently or intermittently.
- the urine detection electrodes 218a and 218b are connected via the disconnection detection circuit 250, and the control circuit 108a detects a weak current passing through them. When the current cannot be detected even after a predetermined time has passed, it is considered that the urine detection electrodes 218a and 218b are abnormal, and an alarm is issued to the user of the automatic urine processing apparatus 100. .
- control circuit 108a has a timer (not shown), the automatic urine processing apparatus 100 is controlled based on a signal output from the timer, and a periodic operation of the suction pump 108b is also output from the timer. Based on. The timer is activated when the automatic urine processing apparatus 100 is turned on.
- the exposed portions 102c of the urine detection electrode 218a and the urine detection electrode 218b are electrically connected to each other, and the gap between the urine detection electrode 218a and the urine detection electrode 218b.
- the control circuit 108a determines that the change is a signal indicating that urine is present in the urine detection unit 102b, in other words, that urine has been excreted, and starts the suction pump 108b.
- the degree of decrease in electrical resistance depends on various conditions of the urine absorbing member 102, for example, the exposed areas of the urine detecting electrodes 218a and 218b in the non-painted portion 169a.
- the electrical resistance between the electrodes 218a and 218b is easily lowered to 0.4 k ⁇ or less, and the electrical resistance of 0.4 k ⁇ or less is a predetermined time, for example, 0
- the duration of 2 seconds may be a specified resistance value for starting the suction pump 108b, that is, a threshold value.
- the suction pump 108b preferably has the ability to complete the suction of urine by the urine absorbing member 102 within 1 to 2 minutes. When using such a suction pump 108b, the operation of the suction pump 108b is performed. Can be determined that there is an abnormality in the automatic urine processing apparatus 100, for example, when it continues for 3 minutes or more.
- the thermistors 145a and 145b connected to the control circuit 108a of the pump unit 108 change in electrical resistance according to the temperature between the urine absorbing member 102 and the body. Then, the control circuit 108a detects the electrical resistance of the thermistors 145a and 145b at a predetermined time interval (for example, every 1 second). Furthermore, the control circuit 108a detects a temperature change between the urine absorbing member 102 and the body from a change in the electric resistance every second based on the detected electric resistance.
- the front thermistor 145a provided at the non-defecation position detects a change in temperature at the non-defecation position
- the rear thermistor 145b provided at the defecation position detects a change in temperature at the defecation position.
- the temperature detected by the front thermistor 145a and the rear thermistor 145b also changes when the wearer excretes urine or moves the body.
- the electrical resistance of the rear thermistor 145b is rapidly increased in the same manner as when stool is discharged. For this reason, it is difficult to detect defecation only by the temperature change detected by the rear thermistor 145b. Therefore, the inventors compared the temperature change detected by the rear thermistor 145b during urination with the temperature change detected by the rear thermistor 145b during defecation.
- FIG. 10 is a diagram for explaining temperature changes during urination and defecation.
- FIG. 10 shows the result of continuously detecting the temperature change of the front thermistor 145a and the rear thermistor 145b of the urine absorbing member 102 worn by a person who can recognize defecation and urination for about 1 hour.
- the signal S is input to the control circuit 108a so that the wearer's operation knows that.
- the suction pump 108b is activated.
- the temperature during urination rises by 2 to 3 ° C. in a few seconds, and then drops by about 2 ° C. in 1 to 2 minutes because the suction pump 108b is operating.
- the temperature at the time of defecation rises by 2 to 3 ° C. in a few seconds as in the case of urination, but after that, it only drops by about 0.3 ° C. even after about 2 minutes.
- the temperature during urination and defecation is the same in that it rises rapidly, but the subsequent temperature change falls sharply during urination, while slowly taking time during defecation. Descend.
- the excreted stool covers the entire surface side of the rear thermistor 145b when the excretion amount is large, and rises by 2 to 3 ° C. in a few seconds with a rapid temperature rise as described above.
- the amount of excretion is extremely small, a part of the surface side of the rear thermistor 145b may be covered or approached but separated, and the temperature may rise, but may rise after about 1 ° C. and then turn downward.
- the control circuit 108a detects that the stool is excreted, the control circuit 108a detects the amount of increase in temperature when the temperature is detected to be excreted, and presets based on the detected amount of increase.
- the predetermined value that is a criterion for determining whether or not there is stool is the amount of change in temperature when stool is excreted, but the excretion amount is an excretion amount that does not require replacement of the urine absorbing member 102. It is obtained in advance by experiments or the like and stored in a memory that can be referred to by the control circuit 108a.
- the control circuit 108a determines the presence / absence of defecation and whether or not to activate the alarm lamp 504 based on information stored in a memory in advance.
- the automatic urine processing apparatus 100 is provided with a front thermistor 145a in order to prevent erroneous detection due to a temperature change when the body is moved. Since the front thermistor 145a is provided at the non-defecation position, the electrical resistance is hardly changed by defecation. On the other hand, the front thermistor 145a faces the crotch which is the non-defecation position and is provided at a position relatively close to the defecation position. For example, when the wearer moves the body, the urine absorbing member 102 When the temperature between the body and the body changes, the output changes almost in the same manner as the rear thermistor 145b.
- FIG. 11 is a schematic diagram showing temperature changes detected by the front thermistor 145a and the rear thermistor 145b.
- 11 shows the temperature change detected by the rear side thermistor 145b, and the lower left side shows the temperature change detected by the front thermistor 145a.
- the signal output from the upper rear thermistor 145b indicates that a large temperature increase and decrease occurred in the first half and the second half, respectively.
- the signal output from the lower front thermistor 145a is the rear thermistor 145b. This shows that the temperature rises and falls in synchronism with the temperature change in the latter half of the signal output from.
- the control circuit 108a first executes noise removal processing that excludes the temperature change detected by the front thermistor 145a.
- the automatic urine processing device 100 is configured such that the suction pump 108b is operated when urination is detected and periodically.
- the suction pump 108b When the suction pump 108b is operated, the temperature between the urine sucking member 102 and the body decreases. If the temperature starts to decrease for some reason before the temperature between the urine sucking member 102 and the body rises again from the lowered temperature to the same temperature as the body temperature, based on the signal output from the rear thermistor 145b There is a risk of false detection that urine or feces are excreted.
- a predetermined time after the suction pump 108b operates, for example, 2 minutes Increases the accuracy of determining the presence or absence of defecation by not using the signal output from the rear thermistor 145b as a defecation determination target.
- FIG. 12 is a diagram for explaining a method for detecting urination and defecation by the automatic urine processing apparatus.
- signals output from the urine detection electrodes 218a and 218b, the front thermistor 145a, and the rear thermistor 145b are parallelized by the control circuit 108a. It is detected.
- the control circuit 108a of the pump unit 108 continuously or intermittently measures changes in the electrical resistance (impedance) between the urine detection electrodes 218a and 218b and the electrical resistance output from the thermistors 145a and 145b.
- the control circuit 108a measures changes in electrical resistance output from the front side thermistor 145a and the rear side thermistor 145b in synchronization with each other at predetermined time intervals. For example, the measurement is continued while the measurement start time is delayed by 1 second with the data obtained by measuring the change in electrical resistance every second for 5 minutes as one unit.
- the timer is activated when the automatic urine processing apparatus 100 is turned on. Thereafter, whenever it is detected by the timer that one hour has elapsed, the control circuit 108a operates the suction pump 108b for about one minute.
- the automatic urine processing device 100 detects a signal for operating the suction pump 108b (S5), it stops detecting the signal output from the rear thermistor 145b (S6). For example, a signal for operating the suction pump 108b is detected, and detection of a signal output from the rear thermistor 145b is stopped for two minutes after the signal for operating the suction pump 108b is stopped. When it is detected by the timer that two minutes have elapsed after the suction pump 108b is stopped (S7), detection of a signal output from the rear thermistor 145b is started (S8). At this time, the signal output from the urine detector 102b is continuously detected even when the signal for operating the suction pump 108b is detected (S1). On the other hand, when the signal for operating the suction pump 108b is not detected (S5), the signal output from the rear thermistor 145b is continuously detected.
- the control circuit 108a determines that the subsequent change in electrical resistance output from the front thermistor 145a and the rear thermistor 145b is synchronously measured for 5 minutes. Based on this, the stool detection process is executed.
- the detected temperature is lower than the body temperature, it is determined that the temperature is not increased due to defecation, and the presence or absence of operation of the suction pump 108b is detected (S5), and the measurement start time is delayed by 1 second. Has continued.
- the signal output from the urine detection unit 102b continues to be detected.
- the electrical resistance between the urine detection electrode 218a and the urine detection electrode 218b decreases. This is detected by the control circuit 108a (S1).
- the control circuit 108a detects a change in electrical resistance within a predetermined time.
- S2 a stable output is obtained
- S3 it is determined that the signal indicates that urine has been excreted
- S4 the suction pump 108b is started
- control circuit 108a detects that the electrical resistance of the rear thermistor 145b has decreased, that is, the temperature has risen above the body temperature (S10), the control circuit 108a detects that the electrical resistance has decreased for 5 minutes.
- the change in electrical resistance measured in the front thermistor 145a is subtracted from the change in electrical resistance measured in the rear thermistor 145b (S11). Thereby, a temperature change other than defecation, so-called noise is removed.
- the control circuit 108a detects the transition of change in electrical resistance in the data from which noise has been removed, and measures the rate of temperature decrease from the transition of change in electrical resistance (S12). For example, out of the data for 5 minutes from which noise has been removed, in the 2 minutes after detecting that the temperature has risen based on the change in the electrical resistance of the rear thermistor 145b, the lowered temperature is detected to defecate or urinate. Judgment is made (S13). If the speed at which the electrical resistance rises in the data from which noise is removed, that is, the speed at which the temperature falls, is moderate, it is temporarily determined that the signal is that the feces have been excreted.
- the detection result of the presence or absence of urination based on the electrical resistance value between the urine detection electrode 218a and the urine detection electrode 218b is obtained (S14), and it is detected that urine has already been excreted ( In S15), priority is given to the detection results of the urine detection electrodes 218a and 218b, and it is determined that the excreted material is not stool but urine. In this case, since the suction pump 108b is already operated, the suction pump 108b is not operated again.
- the control circuit 108a acquires a stored threshold value for determining the excretion amount, and the temperature at the time of the temperature rise when the excretion is detected is detected.
- the amount of increase (hereinafter referred to as the amount of temperature increase at the time of detection) is compared with the acquired threshold value (S16). At this time, if the temperature rise at the time of detection is larger than the threshold, it is determined that the amount of excreted stool is large, and the alarm lamp 504 is operated (S17). On the other hand, if the temperature rise amount at the time of detection is smaller than the threshold value, it is determined that the amount of excreted stool is small, and the temperature detection is continued without operating the alarm lamp 504.
- the suction pump 108b when the suction pump 108b operates, the data output from the front side thermistor 145a and the back side thermistor 145b, from which data for the next two minutes are excluded, is based. Since the presence / absence of defecation is determined, the determination of the presence / absence of defecation is not affected by the temperature change caused by the movement of the suction pump 108b. For this reason, it is possible to appropriately determine the presence or absence of defecation. At this time, when the suction pump 108b operates, there are a case where the urine detecting unit 102b detects that urine is excreted and a case where the suction pump 108b operates.
- the suction pump 108b is provided. However, it is possible to detect the presence or absence of defecation appropriately.
- the control circuit 108a determines that either stool or urine has been excreted, so that it is possible to more accurately determine whether the discharged stool is stool or urine. .
- the signal output from the rear thermistor 145b differs in the detected temperature depending on the amount of excreted feces. For example, when the amount of stool is large, the detected temperature becomes high because the entire rear thermistor 145b is covered with stool, and when the amount of stool is small, is a part of the rear thermistor 145b covered? Or, since it is not covered, the detected temperature is lower than when the amount of feces is large. For this reason, like the automatic urine processing apparatus 100, after determining that the excreted material is feces, the temperature increase amount is detected based on the signal output from the rear thermistor 145b, and the increase amount is calculated. By using it to determine the amount of excretion, it is possible to determine not only the presence or absence of stool excretion but also the amount of stool excretion.
- the skin contact sheet 134 is provided on the wearer side of the rear thermistor 145b, an air layer is formed between the rear thermistor 145b and the stool. For this reason, the excreted stool does not come into direct contact with the rear thermistor 145b. For this reason, since the signal output from the rear side thermistor 145b easily changes according to the excretion amount of the feces, it is possible to more accurately determine the excretion amount of the feces.
- the skin contact sheet 134 interposed between the rear thermistor 145b and the stool is a nonwoven fabric
- an air layer is formed between the skin contact sheet 134 and the stool. Therefore, when the amount of stool discharge is large, the air layer is crushed by the weight of the stool, the temperature is detected at a position where the stool and the rear thermistor 145b are closer, and the stool discharge amount is small. Since the fecal temperature is detected through the air layer, it is possible to more accurately determine the amount of fecal excretion.
- the rear thermistor 145b provided at the stool position of the urine sucking member 102 rises rapidly in the vicinity of the stool.
- the front thermistor 145a provided at the non-defecation position of the urine sucking member 102 does not contact the stool even if the stool is excreted, the temperature does not increase rapidly due to the excreted stool.
- the rear thermistor 145b and the front thermistor 145a are provided on the single urine sucking member 102, the effects of temperature changes caused by factors other than defecation between the urine sucking member 102 and the body are almost the same. Will receive.
- a signal output from the rear thermistor 145b including a temperature change due to defecation and a temperature change due to a factor other than defecation is output from the front thermistor 145a including a temperature change due to a factor other than defecation. Since the control circuit 108a detects the presence or absence of defecation based on the data excluding the signal, defecation can be detected more accurately.
- the automatic urine processing apparatus 100 is used in a state where the care recipient is sleeping. At this time, if the care recipient needs to evacuate the stool while sleeping, the stool accumulates at a defecation position below the body, that is, behind the body. Further, it is desirable that the front thermistor 145a capable of detecting temperature changes due to factors other than defecation be provided as close as possible to the rear thermistor 145b in the defecation position and not in contact with the stool.
- the front thermistor 145a is not covered with the stool by disposing the front thermistor 145a between the crotch part or between the part facing the crotch and the defecation position, and the front thermistor 145a. It is possible to more reliably detect a temperature change due to factors other than defecation. Therefore, it is possible to detect defecation more accurately.
- the front thermistor 145a and the rear thermistor 145b are formed on a single insulating synthetic resin film portion 260, it is not necessary to attach the front thermistor 145a and the rear thermistor 145b individually. A thermistor 145a and a rear thermistor 145b can be attached.
- the front thermistor 145a and the rear thermistor 145b are formed of a thin and flexible insulating synthetic resin film portion 260, so that the user can use it without feeling uncomfortable. is there.
- the alarm lamp 504 for notifying the presence of defecation When the control circuit 108a of the automatic urine processing apparatus 100 detects the presence of defecation, the alarm lamp 504 for notifying the presence of defecation is operated. It is possible to notify that there was a bowel movement. At this time, for example, if the alarm lamp 504 operates even when a very small amount of stool is excreted and the urine sucking member 102 is not required to be replaced, the caregiver performs the urine sucking member 102 replacement work even when it is not necessary. . For this reason, when the amount of excreted feces is small and the urine absorbing member 102 is not required to be replaced, it is possible to reduce the burden on the caregiver or the like by not operating the alarm lamp 504.
- the urine detection unit 102b is a pair of urine detection electrodes 218a and 218b provided on the insulating synthetic resin film portion 260 at a distance from each other, it is possible to realize a function of detecting urine at low cost. Is possible. Further, the pair of urine detection electrodes 218a and 218b are thin and provided on the flexible insulating synthetic resin film portion 260, so that the user can use them without feeling uncomfortable. is there. Moreover, since the conductivity of the urine detection electrodes 218a and 218b that form a pair spaced apart from each other is increased by urine, the urine is reliably detected by detecting urine based on the voltage change between the urine detection electrodes 218a and 218b. Can be detected.
- the suction pump 108b is periodically executed regardless of the urine suction operation performed after urination.
- the present invention is not limited thereto, and after the suction pump 108b has been operated and stopped last time.
- the suction pump 108b may be operated after one hour.
- a front thermistor and a rear thermistor has been described, but the present invention is not limited to this.
- a plurality of thermistors are provided in the electrode portion along the length direction, and signals output from the thermistors are detected.
- the thermistor in which the temperature change is detected is a defecation position thermistor provided at the defecation position, and the defecation position thermistor is also the nearest thermistor.
- a thermistor in which a temperature change in which the temperature rapidly increases and gradually decreases is not detected is a non-defecation position thermistor provided in the non-defecation position.
- the presence or absence of defecation may be detected by removing the signal output from the non-defecation position thermistor from the signal output from the defecation position thermistor. In this case, since the non-defecation position thermistor is located closer to the defecation position, noise can be removed more accurately, and the presence or absence of defecation can be detected more accurately.
- 100 automatic urine treatment device (defecation detection device), 100a vacuum suction device (urine suction device), 101 controller, 102 urine absorption member, 102a container part (defecation urination receiving member), 102b urine detection unit, 102c exposure part, 104 joint Member, 106 urinary tube, 106a urine tank, 108 pump unit, 108a control circuit (control part), 108b suction pump, 112 container, 114 urine discharge opening, 116 electrical wiring, 116a power supply, 118 electrode part, 120 clip, 124 breathable sheet, 126 diffusion sheet, 128 cushion sheet, 130 spacer, 132 filter, 134 skin sheet (sheet material), 136 breakwater, 136a sheet, 136b elastic member, 136c outer edge, 136d inner edge 138 end sheet, 140 end sheet, 143a power supply electrode, 143b power supply electrode, 143c power supply electrode, 145 thermistor, 145a front side thermistor (second temperature sensor), 145b rear side thermistor
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Abstract
Description
身体と対向して排便及び排尿を受ける排便排尿受け部材と、
前記排便排尿受け部材に着脱自在に設けられ、前記排便排尿受け部材に排泄された尿を吸引可能な尿吸引装置と、
前記排便排尿受け部材の排便を受ける排便位置に設けられた温度センサーと、
前記温度センサーから出力される信号のうち、前記尿吸引装置が動作した後の所定時間内の信号を排除した信号に基づいて前記排便の有無を検出する制御部と、を有することを特徴とする排便検出装置である。
このような排便検出装置によれば、尿吸引装置が動作した後の所定時間内の信号が排除された温度センサーから出力された信号に基づいて排便の有無が検出されるので、排便の有無の判別は、尿吸引装置の動作による温度変化に影響されない。このため、適切に排便の有無を検出することが可能である。
このような排便検出装置によれば、尿検出部にて尿が排泄されたことが検出された場合には、尿吸引装置が動作するので、着用者は快適に着用し続けることができる。このときに、尿吸引装置が動作した後の所定時間内の信号が排除された温度センサーから出力された信号に基づいて排便の有無が検出されるので、尿吸引装置を備えつつも適切に排便の有無を検出することが可能である。
このような排便検出装置によれば、尿吸引装置は定期的に動作されるが、尿吸引装置が動作した後の所定時間内の信号が排除された、温度センサーから出力された信号に基づいて排便の有無が検出されるので、尿吸引装置を定期的に動作させつつも適切に排便の有無を検出することが可能である。
尿吸引装置が動作した場合には、温度センサーから出力される信号が大きく変動する。このため、大幅に低下した温度に対する温度変化を判定対象とすると、誤判別する可能性が高い。このため、温度センサーにより検出された絶対温度が所定温度以下の場合には、排便の有無を検出しないことにより、誤検出を抑えることが可能である。
排泄された便は、人間の体温より高い。このため、温度センサーにより検出された絶対温度が人間の体温より低い場合には、前記排便の有無を検出しないことにより、誤検出をさらに抑えることが可能である。
便と尿は、排泄された時点では、体温より高い温度を有しているが、熱容量の相違から、排泄後の時間の経過とともに下降する温度、すなわち温度の下降速度が相違する。このため、上記排便検出装置のように、排便排尿受け部材に設けられた温度センサーから出力された信号にて、温度が上昇したことを検出した後に温度が下降する速度に基づいて、便及び尿のいずれかが排泄されたことを制御部が判別することにより、排出されたものが便であるか、又は、尿であるかをより正確に判別することが可能である。
温度センサーから出力される信号は、排泄された便の量により検出される温度が相違する。例えば、便の量が多い場合には、温度センサー全体が便に覆われるため検出される温度が高くなり、便の量が少ない場合には、温度センサーの一部が覆われるか又は覆われないため、便の量が多い場合と比較して、検出される温度は低くなる。このため、上記排便検出装置のように、排泄されたものが便であると判別した後に、温度センサーから出力される信号に基づいて温度の上昇量を検出し、当該上昇量を用いて排泄量の多少を判別することにより、単なる便の排泄の有無ばかりでなく、便の排泄量の多少をも判別することが可能である。
このような排便検出装置によれば、排泄された便が温度センサーに直に接触しないので、便の排泄量の多少に応じて温度センサーから出力される信号が変化し易い。このため、便の排泄量の多少をより正確に判別することが可能である。
このような排便検出装置によれば、排便排尿受け部材の排便位置に設けられた第1温度センサーは、便が排泄された際には、便と近接して温度が急激に上昇する。一方、排便排尿受け部材の非排便位置に設けられた第2温度センサーは、便が排泄されても便と離れて配置されているので、排泄された便により急激に温度が上昇することはない。更に、第1温度センサーと第2温度センサーとは、単一の排便排尿受け部材に設けられているので、排便排尿受け部材と身体との間における排便以外の要因による温度変化の影響をほぼ同様に受けることになる。このため、排便による温度変化と排便以外の要因による温度変化とが含まれている第1温度センサーから出力される信号から排便以外の要因による温度変化が含まれている第2温度センサーから出力される信号を除いた信号に基づいて制御部が、便及び尿のいずれかが排泄されたことを判別することにより、便及び尿のいずれかが排泄されたことをより正確に判別することが可能である。ここで、排便位置とは、例えば、排便排尿受け部材のうち、寝たきりの介護を必要とする要介護者が着用して便を排泄した際に、便が溜まる位置であり、具体的には、寝た状態の要介護者の肛門と対向する位置及び肛門より後方側に相当する。また、非排便位置とは、例えば、排便排尿受け部材のうちから排便位置を除いた位置に相当する。
このような排便検出装置によれば、排便検出を必要とする者は、例えば、介護を必要とするような寝たきりの高齢者等の要介護者なので、排便判別装置は寝た状態にて使用される。このとき、要介護者が寝た状態で、便を排泄した際には、便は身体より下側、すなわち、身体の後方側に溜まることになる。また、排便以外の要因による温度変化を検出可能な第2温度センサーは、非排便位置のうちでもできるだけ第1温度センサーに近く、また、便により温度センサーが覆われない位置に設けることが望ましい。このため、第2温度センサーを、股間と対向する部位、又は、当該股間と対向する部位と排便位置との間に配置することにより、第2温度センサーが便により覆われることなく、かつ、第1温度センサーにおける排便以外の要因による温度変化をより確実に検出することが可能である。よって、便及び尿のいずれかが排泄されたことをより正確に判別することが可能である。
このような排便検出装置によれば、第1温度センサーと第2温度センサーとが1枚の絶縁性合成樹脂フィルム上に形成されているので、第1温度センサー及び第2温度センサーを個々に取り付ける必要はなく簡単に第1温度センサー及び第2温度センサーを取り付けることが可能である。また、第1温度センサー及び第2温度センサーが形成されているのは、絶縁性合成樹脂フィルムなので、薄く、可撓性を有しており、使用者は違和感を覚えることなく使用することが可能である。
このような排便検出装置によれば、便が排泄されたことが判別された際には、例えば介助者に便が排泄されたことが判別されたことを報知することが可能である。
例えば、極僅かな便を排泄し排便排尿受け部材を交換不要な場合にも報知部が動作すると、介護者は必要のない時にも排便排尿受け部材の交換作業を行うことになる。このため、上記排便検出装置のように、便の排泄量が少なく排便排尿受け部材を交換不要な場合には、報知部を動作させないことにより介護者等への負担を軽減することが可能である。
このような排便検出装置によれば、尿検出部は互いに間隔を隔てて絶縁性合成樹脂フィルム上に設けられた対をなす電極なので、安価に尿検出部を備えることが可能である。また、対をなす電極は薄く、可撓性を有する絶縁性合成樹脂フィルムに設けられているので、使用者は違和感を覚えることなく使用することが可能である。また、互いに間隔を隔てた対をなす電極は尿により導電性が高まるので、電極間における電圧の変化に基づいて尿が検出されることにより確実に尿を検出することが可能である。
排便検出装置の一例としての自動尿処理装置について添付図面を参照しつつ説明する。
含水率=(湿潤状態のシート重量-乾燥状態のシート重量)/(乾燥状態のシート重量)・・・式(1)
下端部268側の端部と、を除いて絶縁性被覆170にて覆われている。尚、尿検出用電極218a,218bの非塗装部分169aは2層に設けられた絶縁性被覆170に覆われることなく露出している。
図12は、自動尿処理装置による排尿及び排便の検出方法を説明するための図である。
検出し、電気抵抗の変化の推移から温度下降の速度を測定する(S12)。例えば、ノイズを除去した5分間のデータのうち、後側サーミスタ145bの電気抵抗の変化に基づいて温度が上昇したことを検出した後の2分間において、下降した温度を検出して排便又は排尿を判断する(S13)。そして、ノイズを除去したデータにおける電気抵抗が上昇する速度、すなわち温度が下降する速度が緩やかな場合には、便が排泄されたことを検出した信号と仮に判断する。このとき、尿検出用電極218aと尿検出用電極218bとの間の電気抵抗値に基づく排尿の有無の検出結果を取得し(S14)、既に尿が排泄されたことが検出されていた場合(S15)には、尿検出用電極218a、218bの検出結果を優先し、排泄されたものが便ではなく尿と判断する。この場合には、既に吸引ポンプ108bが作動されているので、改めて吸引ポンプ108bが作動させることはない。
以上、上記実施の形態に基づき本発明に係る排便検出装置としての自動尿処理装置を説明したが、上記した発明の実施の形態は、本発明の理解を容易にするためのものであり、本発明を限定するものではない。本発明は、その趣旨を逸脱することなく、変更、改良され得ると共に、本発明にはその等価物が含まれることはもちろんである。
Claims (15)
- 身体と対向して排便及び排尿を受ける排便排尿受け部材と、
前記排便排尿受け部材に着脱自在に設けられ、前記排便排尿受け部材に排泄された尿を吸引可能な尿吸引装置と、
前記排便排尿受け部材の排便を受ける排便位置に設けられた温度センサーと、
前記温度センサーから出力される信号のうち、前記尿吸引装置が動作した後の所定時間内の信号を排除した信号に基づいて前記排便の有無を検出する制御部と、を有することを特徴とする排便検出装置。 - 請求項1に記載の排便検出装置であって、
前記排便排尿受け部材に排泄された尿を検出する尿検出部を備え、
前記制御部は、前記尿検出部にて尿を検出した際に、前記尿吸引装置にて前記排便排尿受け部材の尿を吸引することを特徴とする排便検出装置。 - 請求項1又は請求項2に記載の排便検出装置であって、
前記制御部は、前記尿吸引装置を定期的に動作させることを特徴とする排便検出装置。 - 請求項1乃至請求項3のいずれかに記載の排便検出装置であって、
前記制御部は、前記温度センサーにより検出された絶対温度が所定温度より低い場合には、前記排便の有無を検出しないことを特徴とする排便検出装置。 - 請求項4に記載の排便検出装置であって、
前記所定温度は、人間の体温であることを特徴とする排便検出装置。 - 請求項1乃至請求項5のいずれかに記載の排便検出装置であって、
前記制御部は、前記温度センサーから出力される信号にて温度が上昇したことを検出した後、温度が下降する速度に基づいて、便及び尿のいずれかが排泄されたかを判別することを特徴とする排便検出装置。 - 請求項6に記載の排便検出装置であって、
前記制御部は、前記便が排泄されたことを判別した後に、前記温度センサーから出力される信号に基づいて温度の上昇量を検出し、当該上昇量を用いて、排泄量の多少を判別することを特徴とする排便検出装置。 - 請求項6又は請求項7に記載の排便検出装置であって、
前記温度センサーは、シート材に覆われており、前記便の温度は前記シート材を介して検出されることを特徴とする排便検出装置。 - 請求項8に記載の排便検出装置であって、
前記シート材は、不織布であることを特徴とする排便検出装置。 - 請求項1乃至請求項9のいずれかに記載の排便検出装置であって、
前記温度センサーとして、前記排便排尿受け部材の、排便を受ける排便位置に設けられた第1温度センサーと、前記排便排尿受け部材の、排便を受けない非排便位置に設けられた第2温度センサーと、を有し、
前記制御部は、前記第1温度センサーから出力される信号から前記第2温度センサーから出力される信号を除いた信号に基づいて便及び尿のいずれかが排泄されたことを判別することを特徴とする排便検出装置。 - 請求項10に記載の排便検出装置であって、
前記第2温度センサーは、前記排便排尿受け部材が前記身体と対向した際に、股間と対向する部位、又は、当該股間と対向する部位と前記排便位置との間に配置されていることを特徴とする排便検出装置。 - 請求項10または請求項11に記載の排便検出装置であって、
前記第1温度センサーと前記第2温度センサーとは、1枚の絶縁性合成樹脂フィルム上に形成されていることを特徴とする排便検出装置。 - 請求項1乃至請求項12のいずれかに記載の排便検出装置であって、
便が排泄されたことが判別されたことを報知する報知部を有し、
前記制御部は、便が排泄されたことを判別した際に、前記報知部を動作させることを特徴とする排便検出装置。 - 請求項13に記載の排便検出装置であって、
前記制御部は、前記便の排泄量が所定量より少ないと判別した場合には、前記報知部を動作させないことを特徴とする排便検出装置。 - 請求項12乃至請求項14のいずれかに記載の排便検出装置であって、
前記尿検出部は、互いに間隔を隔てて前記絶縁性合成樹脂フィルム上に設けられた対をなす電極であり、
前記排泄された尿による前記対をなす電極間における電圧の変化に基づいて尿が排泄されたことを検出することを特徴とする排便検出装置。
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- 2010-10-15 WO PCT/JP2010/068123 patent/WO2011049010A1/ja active Application Filing
- 2010-10-15 US US13/503,499 patent/US8882731B2/en not_active Expired - Fee Related
- 2010-10-15 MX MX2012004750A patent/MX2012004750A/es not_active Application Discontinuation
- 2010-10-15 CN CN2010800476304A patent/CN102573712A/zh active Pending
- 2010-10-15 EP EP10824859.2A patent/EP2491900B1/en not_active Not-in-force
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CN105615889A (zh) * | 2014-11-20 | 2016-06-01 | 中国移动通信集团公司 | 一种排便监测方法及装置 |
Also Published As
Publication number | Publication date |
---|---|
EP2491900A4 (en) | 2014-04-09 |
EP2491900B1 (en) | 2015-04-15 |
US8882731B2 (en) | 2014-11-11 |
MX2012004750A (es) | 2012-06-01 |
JP2011087825A (ja) | 2011-05-06 |
US20120245541A1 (en) | 2012-09-27 |
AU2010309092A1 (en) | 2012-05-31 |
EP2491900A1 (en) | 2012-08-29 |
CN102573712A (zh) | 2012-07-11 |
JP5396234B2 (ja) | 2014-01-22 |
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