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WO2013018295A1 - Dispositif de mesure de l'humidité corporelle - Google Patents

Dispositif de mesure de l'humidité corporelle Download PDF

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Publication number
WO2013018295A1
WO2013018295A1 PCT/JP2012/004535 JP2012004535W WO2013018295A1 WO 2013018295 A1 WO2013018295 A1 WO 2013018295A1 JP 2012004535 W JP2012004535 W JP 2012004535W WO 2013018295 A1 WO2013018295 A1 WO 2013018295A1
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WO
WIPO (PCT)
Prior art keywords
moisture meter
unit
protective cover
sensor unit
moisture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2012/004535
Other languages
English (en)
Japanese (ja)
Inventor
美雪 小山
敬亮 吉野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Terumo Corp
Original Assignee
Terumo Corp
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 Terumo Corp filed Critical Terumo Corp
Publication of WO2013018295A1 publication Critical patent/WO2013018295A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • A61B5/0537—Measuring body composition by impedance, e.g. tissue hydration or fat content
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4869—Determining body composition
    • A61B5/4875—Hydration status, fluid retention of the body
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0204—Operational features of power management
    • A61B2560/0209—Operational features of power management adapted for power saving
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
    • A61B2560/02—Operational features
    • A61B2560/0223—Operational features of calibration, e.g. protocols for calibrating sensors
    • A61B2560/0228—Operational features of calibration, e.g. protocols for calibrating sensors using calibration standards

Definitions

  • the present invention relates to an in-vivo moisture meter for measuring moisture in a living body of a subject.
  • Dehydration in the living body is a condition in which water in the living body decreases, and it often develops daily, especially when exercising when a lot of water is discharged from the body due to sweating or rising body temperature, or when the temperature is high It is. In particular, it is said that elderly people are more likely to cause dehydration than ordinary healthy people because the water retention ability of the living body itself is often lowered.
  • the body temperature regulation is impaired when the body water is lost by 3% or more of the body weight.
  • the body temperature regulation disorder causes the body temperature to rise, and the body temperature rise further increases the body water. It will fall into a vicious cycle of causing a decrease in the number of people, and eventually it will lead to a condition called heat stroke.
  • Heat stroke has pathological conditions such as heat convulsions, heat fatigue, and heat stroke, and sometimes systemic organ damage sometimes occurs. By accurately grasping dehydration symptoms, the risk of heat stroke can be avoided in advance. It is desirable to be able to do this.
  • examples of a site that can be easily measured by others other than the subject and are suitable for measuring the amount of moisture in the body include, for example, the skin of the armpit.
  • the armpit is originally a site with a high amount of sweat, and assuming the skin of the armpit as the measurement site, for example, when trying to continuously measure the moisture content in the body of a plurality of subjects. It is conceivable that sweat or the like adhering at the time of measurement by the examiner affects the measurement result of the next subject. For this reason, in order to maintain high measurement accuracy, it is indispensable to completely wipe off sweat and the like adhering to the contact part (sensor part) during the measurement journey.
  • the contact part In the first place, in a body moisture meter that measures the amount of moisture in the body by making contact with the body surface of the person to be measured, the contact part (sensor part) is always kept clean from a hygienic viewpoint. desirable.
  • the present invention has been made in view of the above problems, and an object of the present invention is to maintain measurement accuracy and improve hygiene in a body moisture meter for measuring body moisture content in a subject.
  • the moisture meter in the body has the following configuration. That is, A sensor unit that measures data on moisture in the living body by contacting the body surface of the subject; and A mounting portion that supports the sensor unit and is mounted with a protective cover on which a protective film that covers the sensor unit is disposed; A controller that calculates the amount of water in the subject based on the data measured by the sensor unit; and The control unit is configured to calculate the moisture content in the subject based on the data measured by the sensor unit when the protective cover is mounted on the mounting unit. The moisture content in the body is corrected using a correction value corresponding to.
  • FIG. 1 is a diagram showing an external configuration of an in-vivo moisture meter according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing an external configuration of a protective cover attached to the moisture meter in the body.
  • FIG. 3A is a diagram showing a state where the protective cover is attached to the moisture meter in the body.
  • FIG. 3B is a diagram illustrating a state where the protective cover is removed from the moisture meter in the body.
  • FIG. 4 is a diagram showing a functional configuration of the moisture meter in the body.
  • FIG. 5 is a diagram for explaining a measurement circuit of the moisture meter in the body.
  • FIG. 6 is a diagram for explaining the operation of the moisture meter in the body.
  • FIG. 7 is a diagram for explaining holding of measurement information by the memory.
  • FIG. 8 is a diagram showing an external configuration of a protective cover attached to the moisture meter in the body.
  • FIG. 9 is a diagram illustrating a state in which the protective cover arranged in the case is attached to the moisture meter in the body.
  • FIG. 10 is a diagram showing a state where the protective cover is removed from the in-vivo moisture meter by the eject button.
  • FIG. 11 is a diagram showing an external configuration of a moisture meter in the body having a rectangular tip portion.
  • FIG. 12 is a diagram showing an external configuration of the in-vivo moisture meter according to one embodiment of the present invention.
  • FIG. 13 is a diagram illustrating a configuration of the cartridge unit fixed to the moisture meter in the body and a configuration of the fixing unit to which the cartridge unit is fixed.
  • FIG. 14 is a diagram for explaining a film winding operation.
  • FIG. 15 is a diagram for explaining the operation of the moisture meter in the body.
  • FIG. 16 is a diagram illustrating a configuration of a film included in the cartridge.
  • FIG. 17 is a diagram for explaining the operation of the moisture meter in the body.
  • FIG. 18 is a diagram showing an external configuration of the moisture meter in the body according to one embodiment of the present invention.
  • FIG. 19 is a diagram illustrating a configuration of the cartridge unit fixed to the moisture meter in the body and a configuration of the fixing unit to which the cartridge unit is fixed.
  • FIG. 1 is a diagram illustrating an example of an external configuration of a moisture meter 100 in the body according to the present embodiment.
  • the moisture meter 100 in the body brings the sensor unit into contact with the armpit skin, which is the body surface of the subject, and detects the physical amount corresponding to the electrical signal supplied in the sensor unit, thereby determining the moisture content in the subject's body.
  • the sensor unit is brought into contact with the subject's armpit, and the capacitance of the subject is measured as a physical quantity (data related to moisture in the living body). Detects how wet the skin is and calculates the amount of water in the body.
  • the physical quantity detected for calculating the amount of water in the body is not limited to the capacitance, and may be, for example, impedance measured by supplying a constant voltage or a constant current to the subject.
  • the main body unit 101 is provided with various user interfaces and an electronic circuit for calculating the body moisture content.
  • a power switch 102 and a display unit 103 are arranged.
  • the display unit 103 displays the current moisture content measurement result 131.
  • the previous measurement result 132 is also displayed.
  • the battery display unit 133 displays the remaining amount of the battery (power supply unit 411 in FIG. 4).
  • the sensor unit 110 is provided at the distal end 104 of the moisture meter 100 in the body so as to be slidable in the directions of arrows 141a and 141b.
  • the sensor unit 110 is urged in the direction of the arrow 141a by a spring (not shown) in order to ensure a pressing force for ensuring the close contact of the sensor head 111 with the skin (for example, an urging force of about 200 g).
  • the sensor head 111 is pressed against the skin of the armpit and the sensor unit 110 is moved in the direction of the arrow 141b by a predetermined amount (for example, 1 mm to 10 mm, in this embodiment, 5 mm) to start measurement. Yes.
  • Measurement of body water content is started.
  • the user turns on the power switch 102 to activate the moisture meter 100 in the body, and the sensor head 111 is placed on the body surface of the subject with a predetermined load (for example, 100 g to 300 g, more preferably 150 g to 250 g, in this embodiment). 200g)
  • a predetermined load for example, 100 g to 300 g, more preferably 150 g to 250 g, in this embodiment.
  • An electrode is laid on the contact surface of the sensor head 111 with the subject, and a protective material is provided so as to cover the electrode.
  • the contact surface of the sensor head 111 may be a planar shape or a convex curved surface shape.
  • An example of the shape of such a contact surface is a part of a spherical surface (for example, a spherical surface having a radius of 15 mm).
  • the front end 104 that supports the sensor unit 110 is further provided with notches 151 and 152, which are configured to lock a locking portion of a protective cover, which will be described later with reference to FIG.
  • the protective cover can be detachably attached to the distal end portion 104 of the in-vivo moisture meter 100 (that is, the distal end portion of the in-vivo moisture meter 100 supports the sensor unit 110 and the protective cover is attached). Function as the mounting portion 104).
  • the notch parts 151 and 152 are assumed to be provided with a protective cover detection part that detects when the locking part of the protective cover is locked.
  • the moisture meter 100 in the body is configured to detect the amount of moisture in the body of the subject by bringing the sensor unit 110 (the sensor head 111) into contact with the skin of the subject's armpit. . For this reason, it is necessary to consider the influence on the measurement result of the previous test subject's armpit sweat and the hygiene management of the sensor unit 110. And in the moisture meter 100 in a body which concerns on this embodiment, as a countermeasure for it, it is comprised so that the disposable protective cover which covers the said sensor part 110 can be mounted
  • FIG. 2 is a diagram showing an external configuration of the protective cover 200 attached to the moisture meter 100 in the body according to the present embodiment.
  • reference numeral 201 denotes a housing, which includes a semicircular side surface arranged in parallel to each other and an upper surface along the circumference of the semicircular shape so as to match the outer shape of the distal end portion 104 of the moisture meter 100 in the body. It has a hollow structure. Thereby, it can be made to fit in the front-end
  • Reference numeral 202 denotes a protrusion, which is a member that is pressed by a user's finger when removing the housing 201 fitted to the tip 104 of the moisture meter 100 (attached to the tip 104 of the moisture meter 100) Details of the work for removing the protective cover 200 will be described later).
  • the 211 is a protective film, is arranged so as to cover the opening 212 provided at the center position on the upper surface side of the housing 201, and is configured to be extendable. Thereby, when the housing 201 is fitted to the front end portion 104 of the moisture meter 100 in the body, the sensor portion 110 is completely covered by extending along the sensor portion 110. Furthermore, even when the sensor unit 110 moves a predetermined amount in the direction of the arrow 141b during measurement, the movement of the sensor unit 110 can be followed.
  • Reference numerals 221 and 222 denote locking portions which are locked to the notches 151 and 152 provided in the distal end portion 104 of the moisture meter 100 when the housing 201 is fitted to the distal end portion 104 of the moisture meter 100 in the body. Is done. As a result, the protective cover 200 is fixed to the distal end portion 104 of the moisture meter 100 in the body.
  • FIG. 3A is a diagram illustrating a state in which the protective cover 200 is attached to the distal end portion 104 of the in-vivo moisture meter 100.
  • the housing 201 is fitted to the distal end portion 104 of the moisture meter 100 in the body by moving the protective cover 200 in the arrow 301 direction with the protruding portion 202 facing upward. Is done.
  • the protective cover 200 is positioned so that the sensor unit 110 matches the opening 212 of the housing 201. Thereby, the protective film 211 is extended, and the housing 201 can be fitted more deeply into the distal end portion 104 of the moisture meter 100 in the body. As a result, the locking portions 221 and 222 are locked to the notches 151 and 152, and the protective cover 200 is fixed to the distal end portion 104 of the in-vivo moisture meter 100.
  • FIG. 3B is a diagram illustrating a state where the protective cover 200 is removed from the distal end portion of the moisture meter 100 in the body.
  • in-vivo moisture meter 100 concerning this embodiment is constituted so that protection cover 200 can be removed with one hand, and, thereby, a user's work load at the time of replacement of protection cover 200 is reduced. Can do.
  • FIG. 4 is a block diagram illustrating a functional configuration example of the moisture meter 100 in the body according to the present embodiment.
  • the control unit 401 includes a CPU 402 and a memory 403, and the CPU 402 executes various programs in the body moisture meter 100 by executing a program stored in the memory 403.
  • the CPU 402 performs display control of the display unit 103, which will be described later with reference to the flowchart of FIG. 6, drive control of the buzzer 422 and the LED lamp 423, measurement of moisture in the body (capacitance measurement in this embodiment), and the like.
  • the memory 403 includes a nonvolatile memory and a volatile memory. The nonvolatile memory is used as a program memory, and the volatile memory is used as a work memory for the CPU 402.
  • the power supply unit 411 has a replaceable battery or a rechargeable battery, and supplies power to each part of the moisture meter 100 in the body.
  • the voltage regulator 412 supplies a constant voltage (for example, 2.3 V) to the control unit 401 and the like.
  • the remaining battery level detection unit 413 detects the remaining battery level based on the voltage value supplied from the power source unit 411 and notifies the control unit 401 of the detection result.
  • the control unit 401 controls the display of the battery display unit 133 based on the remaining battery level detection signal from the remaining battery level detection unit 413.
  • the control part 401 When the power switch 102 is pressed, power supply from the power supply unit 411 to each unit is started. And if the control part 401 detects that pressing by the user of the power switch 102 continued for 1 second or more, it will maintain the power supply to each part from the power supply part 411, and will make the moisture meter 100 in a body into an operation state. As described above, the measurement switch 414 is turned on when the sensor unit 110 is pushed a predetermined amount or more in the direction of the arrow 141b. When the ON state of the measurement switch 414 continues for a predetermined time (for example, 2 seconds), the control unit 401 starts measuring the body water content.
  • a predetermined time for example, 2 seconds
  • control unit 401 In order to prevent exhaustion of the power supply unit 411, if the measurement does not start even after 5 minutes have passed since the in-vivo moisture meter 100 is in the operating state, the control unit 401 automatically turns on the in-vivo moisture meter 100. Transition to the off state.
  • the measurement circuit 421 is connected to the sensor head 111 and measures the capacitance.
  • FIG. 5 is a diagram illustrating a configuration example of the measurement circuit 421.
  • a CR oscillation circuit is formed by the operational amplifiers 501 and 502, the resistors 503 and 504, and the subject capacitor 510. Since the oscillation frequency of the output signal 505 varies depending on the subject volume 510, the control unit 401 calculates the subject volume 510 by measuring the frequency of the output signal 505.
  • the sensor head 111 of the present embodiment for example, two comb-shaped electrodes are arranged so that the respective comb teeth are alternately arranged, but the present invention is not limited to this.
  • the protective cover detection unit 431 is provided in the notches 151 and 152 of the distal end portion 104 of the moisture meter 100 in the body, and detects this when the locking portions 221 and 222 of the protective cover 200 are locked. If the protective cover detection unit 431 is in an on state during the measurement of the moisture content in the body, the protective film 211 is calculated in calculating the subject volume 510 based on the measured frequency of the output signal 505. Correction is performed using correction values corresponding to the material and film thickness.
  • the protective film thickness was 0 when measured as 32.2%.
  • a protective cover 200 having a protective film made of a polyethylene sheet of 0.03 mm, 0.06 mm, and 0.09 mm and a PET (polyethylene terephthalate) sheet having a protective film thickness of 0.13 mm was attached and measured, They were 3%, 3.6%, 1.3%, and 0.7%. Therefore, the correction value is set based on these measurement results.
  • a correction value of 25 is calculated for the calculated amount of water in the body (for example, X%).
  • a value obtained by adding% (X% + 25%) can be output as the final amount of water in the body.
  • the display unit 103 performs display as described in FIG. 1 under the control of the control unit 401.
  • the buzzer 422 rings when the sensor unit 110 is pressed to start measurement or when the moisture content in the body is completed, and notifies the user of the start or completion of measurement.
  • the LED lamp 423 also performs the same notification as the buzzer 422. That is, the LED lamp 423 is turned on when the measurement is started by pressing the sensor unit 110 or when the moisture content in the body is completed, and notifies the user of the start or completion of the measurement.
  • the timer unit 424 operates by receiving power supply from the power source unit 411 even when the power is off, and notifies the control unit 401 of the time in the operating state.
  • step S601 the control unit 401 detects a measurement start instruction.
  • the state of the measurement switch 414 is monitored, and it is determined that the measurement start instruction has been detected when the measurement switch 414 remains on for 2 seconds or longer.
  • the control unit 401 measures the oscillation frequency of the output signal 505 from the measurement circuit 421 in step S602.
  • step S603 when the oscillation frequency of the output signal 505 is measured in step S602, it is determined whether or not the protective cover detection unit 431 is in the on state. In step S603, when it is determined that the protective cover detection unit 431 is in the ON state, in calculating the moisture content in the subject based on the oscillation frequency of the output signal 505 measured in step S602, It is determined that correction is necessary, and the process proceeds to step S604.
  • step S604 the correction value stored in advance in the memory 403 (correction value taking into account the effect of the presence or absence of the protective film 211) is read, and then the process proceeds to step S605.
  • step S603 if it is determined in step S603 that the protective cover detection unit 431 is not in the on state, the moisture content in the body of the subject is calculated based on the oscillation frequency of the output signal 505 measured in step S602. In this case, it is determined that no correction is necessary, and the process proceeds to step S604.
  • step S605 the moisture content in the body of the subject is calculated based on the oscillation frequency of the output signal 505 measured in step S602. At this time, if a correction value has been read in step S604, correction is performed using the correction value.
  • step S606 it is determined whether or not the subject is dehydrated based on whether or not the amount of water in the body calculated in step S605 exceeds a predetermined threshold value.
  • the threshold value in this case is preferably a value corresponding to 25% when water is 100% and air is 0%.
  • step S607 the current measurement information is stored in the memory 403.
  • FIG. 7 is a diagram illustrating a data configuration of measurement information stored in the memory 403.
  • a measured value 701 is the amount of water in the body calculated by the current measurement.
  • the determination result 702 is information indicating whether the dehydration state or the non-dehydration state is determined in step S606 with respect to the amount of water in the body calculated by the current measurement.
  • the measurement time 703 is information indicating the time notified from the time measuring unit 424 in the current measurement.
  • the measurement time 703 can be, for example, the time notified from the time measuring unit 424 when the measurement is executed in step S602.
  • step S608 the water content in the body calculated by the current measurement is displayed on the display unit 103.
  • display is performed in a display form according to the determination result of the dehydrated state or the non-dehydrated state (for example, in the case of the dehydrated state, the amount of water in the body is displayed in red, and in the case of the non-dehydrated state, The amount of water in the body is displayed in blue).
  • the in-vivo moisture meter 100 is configured such that the protective cover 200 can be attached and detached.
  • the protective cover 200 in contact with the skin of the subject's armpit, in the moisture meter in the body that measures the amount of moisture in the body of the subject, to the measurement accuracy of the sweat of the armpit that was attached during the previous measurement of the subject It became possible to eliminate the influence of.
  • the sensor unit 110 can always be kept clean, and hygiene improvement can be achieved.
  • the opening 212 is provided at the center position on the upper surface side of the housing 201, and the stretchable protective film 211 is disposed in the opening.
  • the present invention is not limited to this.
  • the entire housing 201 may be made of a stretchable material (see 8a in FIG. 8), or a part of the housing 201 may have a stretchable structure such as a bellows structure (see 8b in FIG. 8).
  • the protective cover 200 when the protective cover 200 is attached, the user moves the protective cover 200 to fit the distal end portion 104 of the moisture meter 100 in the body. It is not limited to.
  • a case in which a plurality of protective covers 200 are arranged as shown in FIG. 9 is prepared, and the user moves the tip 104 of the moisture meter 100 in the direction of the arrow 901, so that the tip of the moisture meter 100 in the body is moved.
  • You may comprise so that the part 104 may be fitted to the protective cover 200 (refer FIG. 9).
  • the user can perform all the work of attaching the protective cover 200 and the work of measuring the moisture content in the body by one-hand operation, and the convenience for the user is improved.
  • the protective cover 200 is removed by pushing out the protruding portion 202 of the protective cover 200.
  • the present invention is not limited to this.
  • the in-body moisture meter 100 is provided with an eject button 1001 for releasing the locked state of the protective cover 200, and when the user presses the eject button 1001, the locked state of the protective cover 200 is released, and the protective cover 200 is protected.
  • the cover 200 may be removed (FIG. 10).
  • the protective cover detector 431 is provided to automatically detect whether or not the protective cover 200 is attached.
  • the present invention is not limited to this.
  • it may be configured to manually input that the protective cover is attached. Or you may make it provide the input part for a user to input a correction value directly according to the presence or absence of a protective cover.
  • the same protective cover 200 can be used for different subjects, but the present invention is not limited to this.
  • an instruction to urge removal of the protective cover 200 may be displayed on the display unit 103.
  • the risk of repeatedly using the protective cover 200 can be reduced.
  • the distal end portion 104 of the moisture meter 100 in the body has a circular shape.
  • the present invention is not limited to this, and may be, for example, a rectangular shape (see, for example, FIG. 11). ).
  • the housing 201 of the protective cover 200 also has a rectangular shape corresponding to the shape of the distal end portion 104 of the in-vivo moisture meter 100.
  • FIG. 12 is a diagram illustrating an example of an external configuration of the in-vivo moisture meter 1200 according to the present embodiment.
  • In-body moisture meter 1200 brings the sensor unit into contact with the armpit skin that is the body surface of the subject, and the sensor unit detects a physical quantity corresponding to the supplied electrical signal, thereby detecting the moisture content in the subject. Is calculated.
  • the sensor unit is brought into contact with the subject's armpit, and the capacitance of the subject is measured as a physical quantity (data on moisture in the living body), thereby measuring the moisture in the body. Calculate the amount.
  • the physical quantity detected for calculating the amount of water in the body is not limited to the capacitance, and may be, for example, an impedance measured by supplying a constant voltage or a constant current to the subject.
  • the main body unit 101 is provided with various user interfaces and an electronic circuit for calculating the body moisture content.
  • a power switch 102 and a display unit 103 are arranged.
  • the display unit 103 displays the current moisture content measurement result 131.
  • the previous measurement result 132 is also displayed.
  • the battery display unit 133 of the display unit 103 displays the remaining amount of the battery (power supply unit 411 in FIG. 4).
  • the tip portion 104 of the moisture meter 1200 in the body is provided with the sensor portion 110 slidable in the directions of arrows 141a and 141b (contact direction when the sensor portion 110 is brought into contact with the skin) (that is, the moisture meter in the body).
  • the tip portion 104 of 1200 functions as a support portion that supports the sensor portion 110).
  • the sensor unit 110 is urged in the direction of the arrow 141a by a spring (not shown) in order to ensure a pressing force for ensuring the close contact of the sensor head 111 with the skin (for example, an urging force of about 200 g).
  • the measurement is started when the sensor head 111 is pressed against the skin of the subject's armpit and the sensor unit 110 moves in the direction of the arrow 141b by a predetermined amount (for example, 1 mm to 10 mm, 5 mm in this embodiment). ing.
  • a predetermined amount for example, 1 mm to 10 mm, 5 mm in this embodiment.
  • Measurement of body water content is started.
  • the user turns on the power switch 102 to activate the moisture meter 1200 in the body, and the sensor head 111 is placed on the subject's body surface with a predetermined load (for example, 100 g to 300 g, more preferably 150 g to 250 g, in this embodiment). 200g)
  • a predetermined load for example, 100 g to 300 g, more preferably 150 g to 250 g, in this embodiment. 200g
  • the contact surface of the sensor head 111 may be a flat shape or a convex curved shape. Alternatively, it may be a part of a spherical surface (for example, a spherical surface having a radius of 15 mm).
  • openings 1251 and 1252 are provided in the distal end portion 104 that supports the sensor portion 110.
  • a cartridge film (strip-shaped member) 1260 fixed inside the housing of the tip 104 extends from the opening 1251 to the outside of the housing, and is accommodated in the opening 1252 through the contact surface of the sensor unit 110.
  • a part of the housing of the distal end portion 104 is configured to be detachable, and the user can replace the cartridge by removing a part of the housing. The configuration inside the housing of the tip 104 and the configuration of the cartridge will be described later with reference to FIG.
  • the distal end portion 104 that supports the sensor unit 110 is further provided with an operation unit 1270, and the cartridge film 1260 is rotated in a predetermined direction on the sensor head 111 of the sensor unit 110 by rotating in a predetermined direction. Slide.
  • the sensor head 111 of the sensor unit 110 is covered by the film 1260, and the subject is covered with the sensor head 111 of the sensor unit 110. It is possible to prevent the perspiration or the like from adhering (that is, the sensor unit 110 can be kept clean).
  • the operation unit 1270 is rotated in a predetermined direction, thereby The film of the part to which etc. adhered is wound up, and the film of an unused part will be arrange
  • the operation unit 1270 is rotated in a predetermined direction so that the film is wound.
  • the present invention is not limited to this, and for example, the sensor unit 110 slides in the direction of the arrow 141b. Then, when it is slid in the direction of the arrow 141a (that is, when the sensor unit 110 reciprocates), it may be automatically wound. In this case, it is not necessary to operate the operation unit 1270, and the convenience of the user at the time of measurement is further improved.
  • FIG. 13 is a view for explaining the internal configuration of the housing of the distal end portion 104 of the moisture meter 1200 in the body and the configuration of the cartridge.
  • FIG. 13a of FIG. 13 shows a state in which a part of the housing (housing on the front side of the paper) of the distal end portion 104 of the moisture meter 1200 is removed.
  • the moisture meter 1200 in a body is comprised so that the housing part 1320 of the front-end
  • the cartridge 1300 fixed to the fixing unit 1310 includes a supply roller (first roller) 1301, a take-up roller (second roller) 1302, and feed rollers 1304 and 1305 on the cartridge main body 1303.
  • a film 1260 supplied to the sensor unit 110 is wound around the supply roller 1301.
  • the take-up roller 1302 is a roller for taking up the film 1260 supplied to the sensor unit 110.
  • the feeding roller 1304 is disposed so as to be positioned in the vicinity of the opening 1252 when the cartridge 1300 is fixed to the fixing portion 1310. Further, the feed roller 1305 is disposed so as to be positioned in the vicinity of the opening 1251 when the cartridge 1300 is fixed to the fixing portion 1310. In the cartridge 1300, the film 1260 is stretched between the supply roller 1301 and the take-up roller 1302 via the feed rollers 1304 and 1305.
  • gears 1311 and 1312 that rotate by rotating the operation unit 1270 are arranged in the housing of the distal end portion 104 of the moisture meter 1200 in the body.
  • the gear 1311 is connected to a gear (not shown) disposed on the lower side of the take-up roller 1302 when the cartridge 1300 is fixed to the fixing portion 1310. Accordingly, by rotating the operation unit 1270 in a predetermined direction, the take-up roller 1302 of the cartridge 1300 fixed to the fixed unit 1310 rotates, and the film 1260 can be taken up (that is, the rotary unit Form).
  • 13b of FIG. 13 shows a state where the cartridge 1300 is fixed to the fixing portion 1310 of the distal end portion 104 of the in-vivo moisture meter 1200.
  • the film 1260 is disposed so as to pass through the sensor head 111 of the sensor portion 110.
  • the operation unit 1270 is operated and the take-up roller 1302 rotates, the film 1260 slides on the sensor head 111 of the sensor unit 110.
  • the sensor unit 110 slides in the directions of arrows 141a and 141b during measurement. Even so, the film 1260 can follow the sliding operation of the sensor unit 110.
  • the used film 1260 can be replaced with the unused film 1260 by a simple operation.
  • step S1501 the control unit 401 detects a measurement start instruction.
  • the state of the measurement switch 414 is monitored, and it is determined that the measurement start instruction has been detected when the measurement switch 414 remains on for 2 seconds or longer.
  • the measurement start condition is not limited to this.
  • a pressure sensor or the like is disposed on the surface of the sensor unit 110, and it is monitored whether the film 1260 accurately covers the surface of the sensor unit 110. You may comprise. Alternatively, a pressure sensor or the like may be arranged on the fixing unit 1310 to monitor whether the cartridge 1300 is fixed accurately.
  • the rearmost part of the film 1260 of the cartridge is configured so that any one of the thickness, conductivity, and transmittance is different from the other parts, the rearmost part is located on the surface of the sensor unit 110. In addition, it may be configured to detect this and recognize that the remaining number is small or measurement is impossible.
  • control unit 401 When the control unit 401 detects the measurement start instruction and determines that the measurement start condition is satisfied, the control unit 401 measures the oscillation frequency of the output signal 505 from the measurement circuit 421 in step S1502.
  • step S1503 the moisture content in the subject's body is calculated based on the oscillation frequency of the output signal 505 measured in step S1502.
  • step S1504 it is determined whether or not the subject is dehydrated based on whether or not the amount of water in the body calculated in step S1503 exceeds a predetermined threshold.
  • the threshold value in this case is preferably a value corresponding to 25% when water is 100% and air is 0%.
  • step S1505 the current measurement information is stored in the memory 403.
  • FIG. 7 is a diagram illustrating a data configuration of measurement information stored in the memory 403.
  • a measured value 701 is the amount of water in the body calculated by the current measurement.
  • the determination result 702 is information indicating whether the dehydrated state or the non-dehydrated state is determined in step S1504 with respect to the amount of water in the body calculated by the current measurement.
  • the measurement time 703 is information indicating the time notified from the time measuring unit 424 in the current measurement.
  • the measurement time 703 can be, for example, the time notified from the time measuring unit 424 when the measurement is performed in step S1502.
  • step S1506 the water content in the body calculated by the current measurement is displayed on the display unit 103.
  • display is performed in a display form according to the determination result of the dehydrated state or the non-dehydrated state (for example, in the case of the dehydrated state, the amount of water in the body is displayed in red, and in the case of the non-dehydrated state, The amount of water in the body is displayed in blue).
  • the moisture meter 1200 in the present embodiment has a cartridge having a supply roller, a take-up roller, and a film stretched between the rollers fixed to the front end in a replaceable manner. It was set as the structure to do.
  • the film can be disposed through the sensor unit 110.
  • the take-up roller takes up the film, and the film located on the sensor unit 110 is easily replaced with the unused film. The configuration can be made.
  • it is configured to measure the amount of moisture in the body of the subject in a state where the contact surface of the sensor unit 110 is exposed without being covered with a film, and wipes sweat or the like adhering to the sensor head 111 of the sensor unit 110.
  • it is good also as a structure using the said film.
  • FIG. 16 is a diagram illustrating a configuration example of a film 1600 included in the cartridge 1300 attached to the moisture meter 1200 in the body according to the present embodiment.
  • the film 1600 is provided with openings 1601 at predetermined intervals in the longitudinal direction.
  • the opening 1601 generally corresponds to the size of the sensor head 111 of the sensor unit 110.
  • An absorbing member 1602 is disposed between the openings 1601.
  • the cartridge 1300 having the film 1600 is disposed so that the film 1600 is stretched through the sensor unit 110 as described with reference to FIG.
  • any one of the openings 1601 is arranged on the sensor head 111 of the sensor unit 110.
  • the sensor head 111 of the sensor unit 110 can be brought into direct contact with the skin of the subject's armpit.
  • the film 1600 moves by rotating the operation part 1270 to a predetermined direction.
  • the absorbing member 1602 of the film 1600 slides on the sensor head 111 of the sensor unit 110, the subject's sweat or the like adhering to the sensor head 111 is wiped off by the absorbing member 1602. That is, the wiping operation by the absorbing member 1602 is performed until the film 1600 is moved by a predetermined amount and the next opening 1601 of the film 1600 is positioned on the sensor head 111 of the sensor unit 110.
  • the next opening 1601 is positioned on the sensor head 111 of the sensor unit 110, and the sensor head 111 of the sensor unit 110 is exposed again. Since the previous test subject's sweat is wiped off by the absorbent member 1602, the next measurement can be started in a clean state.
  • the moisture meter in the body according to the present embodiment is configured to use a film in which openings are provided at predetermined intervals and an absorbing member is arranged between the openings.
  • measurement can be performed in a state where the sensor head 111 of the sensor unit 110 is in direct contact with the skin of the subject's armpit, and measurement accuracy can be improved.
  • the subject's sweat or the like attached to the sensor head 111 by direct contact is wiped off by the absorbing member 1602 of the film 1600 by the winding operation of the film 1600.
  • a film for preventing the subject's sweat from adhering to the sensor unit 110 is arranged.
  • the subject attached to the sensor unit 110.
  • a film for wiping off perspiration and the like was provided.
  • each of the cartridges having films having different purposes may be detachably mounted.
  • a cartridge provided with a film for preventing the subject's sweat from adhering to the sensor unit 110 and a film for wiping the subject's sweat attached to the sensor unit 110 were provided.
  • the calculation procedure for calculating the amount of moisture in the body of the subject is different from that of the cartridge based on the data measured by the sensor unit 110.
  • the sensor head 111 directly contacts the skin of the subject's armpit, In the case of a cartridge in which a film for preventing the subject's sweat or the like from adhering to the section 110 is disposed, the sensor head 111 contacts the skin of the subject's armpit through the film; Become. For this reason, in the latter case, when calculating the amount of moisture in the body based on the measured data, it is necessary to perform correction using a correction value corresponding to the material of the film.
  • the operation of the moisture meter in the body according to the present embodiment will be described.
  • FIG. 17 is a diagram for explaining the operation of the moisture meter in the body according to the present embodiment. Note that S1501, S1502, and S1504 to S1506 in FIG. 17 are the same as those in FIG.
  • step S1701 the type of cartridge 1300 when the oscillation frequency of the output signal 505 is measured in step S1702 is determined. If it is determined in step S1701 that the cartridge is provided with a film for preventing the subject's sweat from adhering to the sensor unit 110, the oscillation frequency of the output signal 505 measured in step S1502 Based on the above, it is determined that correction is necessary in calculating the moisture content in the body of the subject, and the process proceeds to step S1702.
  • step S1702 the correction value stored in advance in the memory 403 (correction value taking into account the effect of the presence or absence of the film 1260) is read, and then the process proceeds to step S1703.
  • step S1701 if it is determined in step S1701 that the cartridge is provided with a film for wiping the subject's sweat or the like attached to the sensor unit 110, the oscillation frequency of the output signal 505 measured in step S1502 is determined. Based on the above, it is determined that no correction is necessary in calculating the moisture content in the body of the subject, and the process proceeds to step S1703.
  • step S1703 the moisture content in the body of the subject is calculated based on the oscillation frequency of the output signal 505 measured in step S1502. At this time, if a correction value has been read in step S1702, correction is performed using the correction value.
  • the moisture meter in the body according to the present embodiment is configured to detachably mount cartridges each having a different purpose film. Further, in view of the fact that the calculation procedure of the moisture content in the body differs depending on which cartridge is installed, the type of the installed cartridge is determined, and the correction is performed according to the determination result.
  • the type of cartridge is automatically determined.
  • the present invention is not limited to this.
  • the configuration may be such that the type of cartridge is manually input. Or you may make it provide the input part for a user to input a correction value directly according to the kind of cartridge.
  • the present invention is not limited to this, and for example, the shape of the tip portion 104 may be rectangular. . Moreover, you may comprise so that it may become thinner than the main-body part 101 as it approaches a front-end
  • FIG. 18 is a diagram showing an external configuration of a moisture meter in the body configured such that the distal end portion 104 has a rectangular shape and becomes thinner toward the distal end.
  • FIG. 19 is a diagram showing a configuration inside the housing of the distal end portion 104 of the moisture meter in the body and a configuration of the cartridge.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
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  • Engineering & Computer Science (AREA)
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  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

L'invention concerne un dispositif de mesure de l'humidité corporelle ayant une précision de mesure plus élevée et une hygiène améliorée. Un dispositif de mesure de l'humidité corporelle (200) de la présente invention comprend : une unité de capteur (110) qui mesure des données indiquant la capacité électrostatique de la surface corporelle d'un sujet de test ; une unité de montage qui supporte une unité de capteur (100) et a également, monté sur celle-ci, un couvercle de protection (200) ayant un film de protection (211) recouvrant l'unité de capteur (110) ; et une unité de commande qui calcule l'humidité corporelle du sujet de test sur la base des données mesurées par l'unité de capteur (110). Lorsque le couvercle de protection (200) est installé sur l'unité de montage, l'unité de commande corrige l'humidité corporelle par l'utilisation d'une valeur de correction correspondant au matériau du film de protection (211) pour calculer l'humidité corporelle du sujet de test sur la base des données mesurés par l'unité de capteur (110).
PCT/JP2012/004535 2011-07-29 2012-07-13 Dispositif de mesure de l'humidité corporelle Ceased WO2013018295A1 (fr)

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JP2011167407 2011-07-29
JP2011-167407 2011-07-29
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JP2013132515A (ja) * 2011-12-27 2013-07-08 Terumo Corp 体内水分計
WO2014162341A1 (fr) * 2013-04-01 2014-10-09 テルモ株式会社 Appareil de mesure d'humidité corporelle, dispositif de détection, ses procédés de contrôle, et milieu de stockage
JP2018186880A (ja) * 2017-04-28 2018-11-29 株式会社村田製作所 測定器
WO2020162440A1 (fr) * 2019-02-04 2020-08-13 株式会社村田製作所 Instrument de mesure
EP4129167A4 (fr) * 2020-04-23 2023-11-29 Huawei Technologies Co., Ltd. Procédé et dispositif de détection de composition corporelle

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JP2008220924A (ja) * 2007-02-15 2008-09-25 Tanita Corp 生体測定装置用カバーシートとその自動配置装置
JP2009515664A (ja) * 2005-11-18 2009-04-16 ネルコー ピューリタン ベネット エルエルシー １つ以上の体液指数を査定するシステムおよび方法

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JPH05261070A (ja) * 1991-03-08 1993-10-12 Ivac Corp 生物医学的プローブ用保護装置
JP2002172100A (ja) * 2000-12-08 2002-06-18 Tanita Corp 生体電気インピーダンス測定装置用樹脂カバー
JP2009515664A (ja) * 2005-11-18 2009-04-16 ネルコー ピューリタン ベネット エルエルシー １つ以上の体液指数を査定するシステムおよび方法
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013132515A (ja) * 2011-12-27 2013-07-08 Terumo Corp 体内水分計
WO2014162341A1 (fr) * 2013-04-01 2014-10-09 テルモ株式会社 Appareil de mesure d'humidité corporelle, dispositif de détection, ses procédés de contrôle, et milieu de stockage
JP2018186880A (ja) * 2017-04-28 2018-11-29 株式会社村田製作所 測定器
WO2020162440A1 (fr) * 2019-02-04 2020-08-13 株式会社村田製作所 Instrument de mesure
CN113194819A (zh) * 2019-02-04 2021-07-30 株式会社村田制作所 测定器
JPWO2020162440A1 (ja) * 2019-02-04 2021-10-28 株式会社村田製作所 測定器
JP7103441B2 (ja) 2019-02-04 2022-07-20 株式会社村田製作所 測定器
CN113194819B (zh) * 2019-02-04 2024-03-29 株式会社村田制作所 测定器
US12343167B2 (en) 2019-02-04 2025-07-01 Murata Manufacturing Co., Ltd. Measuring device with wrinkle suppression
EP4129167A4 (fr) * 2020-04-23 2023-11-29 Huawei Technologies Co., Ltd. Procédé et dispositif de détection de composition corporelle

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