WO2013140711A1 - Thermomètre clinique - Google Patents

Thermomètre clinique Download PDF

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Publication number
WO2013140711A1
WO2013140711A1 PCT/JP2013/000732 JP2013000732W WO2013140711A1 WO 2013140711 A1 WO2013140711 A1 WO 2013140711A1 JP 2013000732 W JP2013000732 W JP 2013000732W WO 2013140711 A1 WO2013140711 A1 WO 2013140711A1
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WO
WIPO (PCT)
Prior art keywords
temperature sensor
acoustic wave
surface acoustic
wave type
type temperature
Prior art date
Application number
PCT/JP2013/000732
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English (en)
Japanese (ja)
Inventor
孝博 相馬
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テルモ株式会社
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Publication date
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Publication of WO2013140711A1 publication Critical patent/WO2013140711A1/fr

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00—Thermometers specially adapted for specific purposes
    • G01K13/20—Clinical contact thermometers for use with humans or animals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/32—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using change of resonant frequency of a crystal
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0271—Thermal or temperature sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/04—Arrangements of multiple sensors of the same type
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • A61B5/0004—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network characterised by the type of physiological signal transmitted
    • A61B5/0008—Temperature signals

Definitions

  • the present invention relates to a thermometer.
  • thermometer that is attached to the body surface of a subject and measures the body temperature in the deep part of the subject (see, for example, Patent Documents 1 and 2).
  • a non-heating type thermometer is disposed so as to face a first temperature sensor that is in contact with the body surface when the sample is attached to the body surface of the subject, and to the first temperature sensor via a heat insulating material. At least two temperature sensor pairs each including a second temperature sensor are provided. And it comprises so that the heat conductivity of each heat insulating material in which each pair of temperature sensors was arranged may mutually differ, and the temperature difference of the 1st temperature sensor in each temperature sensor pair and the 2nd temperature sensor is each By detecting, the heat flow from the deep part is obtained, and the body temperature of the deep part is calculated.
  • thermometer In such a thermometer (hereinafter referred to as a heat flow type thermometer), a thermistor, a thermocouple, or the like is usually used as a temperature sensor.
  • thermometer in the case of a heat flow thermometer, it is assumed that it is used by being attached to the body surface of a subject, and it is indispensable to transmit the detection result by the temperature sensor to the outside.
  • temperature sensors such as thermistors and thermocouples generally do not have a wireless communication function. Therefore, when these temperature sensors are applied to a heat flow thermometer, it is necessary to add a wireless communication function separately. For this reason, as a temperature sensor applied to a heat flow type thermometer, it is more preferable that it is a temperature sensor provided with the wireless communication function.
  • thermometer in the case of a heat flow thermometer, it is essential to reduce the weight and size in order to reduce the burden on the subject, and as a temperature sensor having a wireless communication function, a temperature sensor having an active wireless communication function Thus, it is preferable to use a passive temperature sensor that does not need to provide these functions, rather than a signal processing function such as a digital conversion function, a power supply function, and the like.
  • Examples of such a temperature sensor include a temperature sensor using surface acoustic waves (SAW).
  • a surface acoustic wave is an acoustic acoustic wave that propagates on the surface of a substance
  • a temperature sensor that uses surface acoustic waves is the distance between two comb-shaped electrodes (IDTs) that are arranged on a piezoelectric crystal substrate at a predetermined distance.
  • IDTs comb-shaped electrodes
  • This is a sensor that emits electromagnetic waves by exciting one surface with electromagnetic waves and receiving the surface acoustic waves propagating on the piezoelectric crystal substrate with the other comb-shaped electrode.
  • This is a passive power temperature sensor with a wireless communication function that can calculate the temperature by measuring the change in the propagation speed of the sensor.
  • thermometer If such a temperature sensor is applied, it is not necessary to arrange a CPU or the like and perform various signal processing including conversion processing into a digital signal with a heat flow thermometer, and further wireless communication for transmitting signals. Since there is no need to provide functions and power supply for driving them, there is an advantage that it can be reduced in weight and size.
  • thermometer in the case of a heat flow type thermometer, four temperature sensors (two sets of first and second temperature sensors, a total of four temperature sensors) are used to calculate the body temperature in the deep part. It is necessary to configure so as not to receive thermal interference.
  • the temperature sensor using the surface acoustic wave (SAW) described above is applied to a heat flow thermometer, a configuration in which four temperature sensors are connected to one antenna can be considered.
  • SAW surface acoustic wave
  • Cu or Al used for wiring has high thermal conductivity, and when the antenna is shared, the four temperature sensors are thermally coupled via the wiring, which adversely affects the accuracy of the calculated deep temperature. May affect.
  • a series of series of calculating the deep temperature by emitting electromagnetic waves that excite the comb electrodes of the temperature sensors, catching the electromagnetic waves emitted from each temperature sensor, and calculating the temperature detected by each temperature sensor. It is desirable that the processing is configured so that a predetermined reader can be performed only by bringing it closer to a heat flow thermometer attached to the body surface. Therefore, it is necessary to complete these series of processing (temperature measurement processing) accurately in a short time.
  • the present invention has been made in view of the above problems, and in a heat flow thermometer using a temperature sensor using surface acoustic waves, the temperature interference between the temperature sensors is reduced, and the electromagnetic waves emitted from the temperature sensors are reduced.
  • the object of the present invention is to enable identification and to calculate and display the deep body temperature in a short time.
  • thermometer has the following configuration. That is, A thermometer that measures deep body temperature by contacting the body surface of a subject, A first surface acoustic wave type temperature sensor and antenna are arranged on the side in contact with the body surface, and a second surface acoustic wave type temperature sensor and antenna are arranged on the side facing the surface on the side in contact with the body surface. A first thermal resistor, A third surface acoustic wave type temperature sensor and antenna are arranged on the side in contact with the body surface, and a fourth surface acoustic wave type temperature sensor and antenna are arranged on the side facing the surface in contact with the body surface.
  • a second thermal resistor A uniformizing member configured to cover a surface of the first thermal resistor and the second thermal resistor that are opposed to a surface that is in contact with the body surface;
  • Each of the first to fourth surface acoustic wave type temperature sensors is characterized in that the respective comb electrodes are arranged so that the delay times under the same temperature are different from each other.
  • thermometer in a heat flow thermometer using a temperature sensor using surface acoustic waves, temperature interference between the temperature sensors can be reduced.
  • the deep body temperature can be calculated and displayed in a short time.
  • FIG. 1 is a diagram expressing the heat flow in a heat flow thermometer as an electric circuit using an electric circuit similarity method in order to explain the measurement principle of the heat flow thermometer.
  • FIG. 2 is a diagram illustrating an overall configuration of a body temperature measurement system including a heat flow type thermometer.
  • FIG. 3 is a diagram showing a cross-sectional configuration of the heat flow thermometer.
  • FIG. 4 is a diagram illustrating a planar configuration of the heat flow thermometer.
  • FIG. 5 is a diagram showing a configuration of each temperature sensor constituting the heat flow type thermometer.
  • FIG. 6 is a diagram illustrating an example of an electromagnetic wave caught by the reader.
  • FIG. 7 is a diagram illustrating a functional configuration of the reader.
  • FIG. 1 is a diagram showing the heat flow in a heat flow thermometer as an electric circuit using an electric circuit similarity method in order to explain the measurement principle of the heat flow thermometer.
  • the heat flow in the heat flow thermometer can be expressed by an equivalent circuit 100 by setting the heat flow to current I, the temperature to voltage T, and the heat resistance to electric resistance R.
  • Tb is the deep body temperature
  • Rt is the thermal resistance of the subcutaneous tissue of the subject
  • Tt1 is the temperature detected by the first temperature sensor 111
  • Ta1 is the temperature detected by the second temperature sensor 112.
  • Ra1 indicates the thermal resistance value of the thermal resistor 113, respectively.
  • Tt2 represents the temperature detected by the third temperature sensor 121
  • Ta2 represents the temperature detected by the fourth temperature sensor 122
  • Ra2 represents the thermal resistance value of the thermal resistor 123.
  • Tc represents the external temperature
  • Rc represents the thermal resistance value of the homogenizing member 130 for equalizing the measured temperature on the outside air side.
  • the equivalent circuit 100 can be replaced with one in which the constant voltage Tb is applied. Therefore, it is assumed that a constant current I flows in the equivalent circuit 100. be able to.
  • the current I1 and the current I2 can be expressed by the following equations (1) and (2).
  • the deep body temperature Tb can be uniquely determined.
  • FIG. 2 is a diagram showing an overall configuration of a body temperature measurement system including a heat flow type thermometer according to the present embodiment.
  • reference numeral 200 denotes a heat flow type thermometer according to the present embodiment.
  • 210 emits electromagnetic waves to excite a surface acoustic wave in one of the comb electrodes of the first to fourth temperature sensors 111 to 122 of the heat flow thermometer 200 and to the first to fourth temperature sensors 111 to 122.
  • the reader 210 calculates the deep body temperature of the subject by calculating the temperature of each of the first to fourth temperature sensors 111 to 122 from the measured propagation time using a known delay time-temperature characteristic. To do.
  • FIG. 3 is a diagram showing a cross-sectional configuration of the heat flow thermometer 200 according to the present embodiment.
  • reference numerals 111 and 121 denote a first temperature sensor and a third temperature sensor located on the side in contact with the body surface when they are attached to the body surface of the subject. These are a second temperature sensor and a fourth temperature sensor arranged on the side facing the temperature sensor 111 and the third temperature sensor 121.
  • or 4th temperature sensor shall be comprised by the temperature sensor (surface acoustic wave type temperature sensor) using a surface acoustic wave.
  • 113 is a thermal resistor that is disposed between the first temperature sensor 111 and the second temperature sensor 112 and allows a heat flow from the body surface of the subject to pass therethrough.
  • 123 is a thermal resistor that is arranged between the third temperature sensor 121 and the fourth temperature sensor 122 and allows a heat flow from the body surface of the subject to pass therethrough.
  • the thermal resistor 113 is made of a material having a thermal conductivity of approximately 0.2 W / mK
  • the thermal resistor 123 is made of a material having a thermal conductivity that is about twice that of the thermal resistor 113. Each material is assumed to have flexibility and sufficient restoration.
  • the thermal resistors 113 and 123 are formed in the same shape, and for example, have a flat plate shape with a thickness of 1 mm and a diameter of 20 mm. And the 1st temperature sensor 111, the 2nd temperature sensor 112, the 3rd temperature sensor 121, and the 4th temperature sensor 122 are arrange
  • a uniformizing member 130 made of aluminum having a thermal conductivity of 236 W / mK is disposed on the upper surfaces of the thermal resistor 113 and the thermal resistor 123, and covers the upper surfaces of the thermal resistor 113 and the thermal resistor 123. Yes. Thereby, the temperature of the upper surface of the thermal resistor 123 and the upper surface of the thermal resistor 123 (that is, the outside air side where the heat flow is dissipated) are made uniform.
  • thermal resistor 113 and the thermal resistor 123 are fixed to the uniformizing member 130 so that the bottom surfaces thereof form the same plane.
  • the bottom surface of the thermal resistor 113 and the bottom surface of the thermal resistor 123 are each affixed to the body surface of the subject without a gap.
  • the body surface sides (bottom surfaces) of the temperature sensor 111 and the temperature sensor 121 are respectively covered with heat conductive members 301 and 302 having good heat conductivity such as aluminum tape, and further the body of the heat flow thermometer 200.
  • the surface side is covered with an adhesive tape (adhesive layer) 303 and an adhesive tape (release paper) 304.
  • FIG. 4 is a diagram showing a planar configuration of the heat flow thermometer 200 according to the present embodiment.
  • the first temperature sensor 111, the second temperature sensor 112, the third temperature sensor 121, and the fourth temperature sensor 122 are individually connected to the antennas 411 to 422, respectively. Yes.
  • each temperature sensor 111 to 122 is arranged in the deep portion by arranging four antennas independently instead of arranging one common antenna for each temperature sensor 111 to 122.
  • thermal coupling through an antenna may affect the detection results of the temperature sensors 111 to 122. Can be avoided.
  • the first temperature sensor 111 and the third temperature sensor 121 are arranged at the center position of the surface of the thermal resistor 113 (or 123) that contacts the body surface, and the antennas 411 and 421 and the antenna wiring are In order to make the heat conduction as small as possible, the conductor is made of a thin and thin conductor and is disposed so as to surround the side surface of the thermal resistor 113 (or 123). Thereby, it is possible to reduce the influence of heat transfer from the antennas 411 and 421 to the first temperature sensor 111 and the third temperature sensor 121 as much as possible.
  • the antennas 411 and 421 can have larger diameters, and the reader 210 can stably excite surface acoustic waves and catch electromagnetic waves.
  • the second temperature sensor 112 and the fourth temperature sensor 122 are arranged at the center position of the surface facing the body surface of the thermal resistor 113 (or 123) and facing the body surface.
  • 422 and the antenna wiring are made of a thin conductor with a small thickness in order to make the heat conduction as small as possible, and are arranged so as to surround the side surface of the thermal resistor 113 (or 123). .
  • the antennas 412 and 422 can have larger diameters, and the reader 210 can stably excite surface acoustic waves and catch electromagnetic waves.
  • the heat flow in the thermal resistor 113 is not dissipated from the first to fourth temperature sensors (111 to 122) through the respective antennas (411 to 422). Is formed by arranging a Cu or Al conductor having a width of 0.1 mm or less and a thickness of 10 to 50 ⁇ m by etching or vapor deposition on a synthetic resin film or paper having a width of about 1 mm and a thickness of 0.2 mm or less. Yes.
  • the equalization member 130 covers the 2nd temperature sensor 112 and the 4th temperature sensor 122 from the side facing the surface of the side which contacts a body surface (uniform).
  • the outer periphery of the forming member 130 is positioned outside the second temperature sensor 112 and the fourth temperature sensor 122), and is more uniform than the outer edge formed by the thermal resistors 113 and 123. (The size of the uniformizing member 130 is defined in this way).
  • the uniformizing member 130 is defined in such a size is that if the uniformizing member 130 is made of aluminum and is formed to be larger than the outer edge formed by the thermal resistors 113 and 123, This is because the antennas 411 to 422 provided on the outer circumferences of the resistors 113 and 123 become obstacles when excited by electromagnetic waves emitted from the reader or when electromagnetic waves are emitted (the uniformizing member 130). In order to avoid the influence on the antennas 412 and 422 as much as possible).
  • the uniformizing member 130 serves to equalize the temperature on the outside air side where the heat flow is dissipated, which is detected by the second temperature sensor 112 and the fourth temperature sensor 122, and therefore at least the thermal resistor 113.
  • the size needs to be large enough to cover the second temperature sensor 112 and the fourth temperature sensor 122 respectively disposed at the center position of 123.
  • the outer periphery of the uniformizing member 130 is located outside the second temperature sensor 112 and the fourth temperature sensor 122, and inside the outer edge formed by the thermal resistors 113 and 123. It is the composition located in.
  • FIG. 5 is a diagram showing the configuration of the first to fourth temperature sensors (111, 112, 121, 122).
  • the antenna 411 is connected to the matching circuit 502 of the first temperature sensor 111. Thereby, the high frequency generated by the antenna 411 catching the electromagnetic wave emitted from the reader 210 is supplied to the comb-shaped electrode 503 by the matching circuit 502.
  • the surface acoustic wave is excited in the comb electrode 503 by the supplied high frequency and propagates on the surface of the piezoelectric crystal substrate 501.
  • the propagated surface acoustic wave is received by the comb electrode 504 arranged at a distance L1 from the comb electrode 503, generates a high frequency, and emits electromagnetic waves from the antenna 411 via the matching circuit 502.
  • the emitted electromagnetic wave is caught by the reader 210.
  • the time (delay time) until the surface acoustic wave generated by the comb electrode 503 is received by the comb electrode 504 is determined by the material of the piezoelectric crystal substrate 501 and the distance L1 when the temperature is constant. Come. In other words, when the material of the piezoelectric crystal substrate 501 and the distance L1 are fixed (known), the delay time changes depending on the temperature change of the piezoelectric crystal substrate 501.
  • the reader 210 is based on the measured delay time, The temperature in the first temperature sensor 111 can be calculated.
  • the second temperature sensor 112, the third temperature sensor 121, and the fourth temperature sensor 122 have the same configuration, so that the temperature at each temperature sensor can be calculated.
  • the distances L1 to L4 between the comb-shaped electrodes in the first temperature sensor 111, the second temperature sensor 112, the third temperature sensor 121, and the fourth temperature sensor 122 are configured to be different from each other. (It is assumed that each comb electrode is arranged so that the delay times under the same temperature are different).
  • the distance between the comb-shaped electrodes of each temperature sensor (temperature sensor using surface acoustic waves) arranged in the heat flow thermometer 200 is different from each other. It is possible to distinguish and catch any of the four temperature sensors from only one of the four temperature sensors only by emitting the electromagnetic waves.
  • FIG. 6 shows the emission from the comb electrodes 504, 514, 524, and 534 of the temperature sensors 111 to 122 with reference to the timing of catching the electromagnetic waves emitted from the comb electrodes 503 after the reader 210 emits the electromagnetic waves.
  • the timing of catching the electromagnetic wave is shown (assuming that the electromagnetic waves are emitted from the comb-shaped electrodes 503, 513, 523, and 533 substantially simultaneously).
  • the distance between the comb electrodes is configured to satisfy the relationship of L1 ⁇ L2 ⁇ L3 ⁇ L4. Therefore, as shown in FIG. 6, the first temperature sensor 111 (the comb electrode 504) Electromagnetic waves from are caught the fastest. Hereinafter, electromagnetic waves are caught in the order of the second temperature sensor 112 (comb electrode 514), the third temperature sensor 121 (comb electrode 524), and the fourth temperature sensor 122 (comb electrode 534).
  • the time from when excited by the electromagnetic wave emitted from the reader until the electromagnetic wave emitted from each temperature sensor 111 to 122 is caught by the reader also varies depending on the temperature change of the surface of the piezoelectric crystal substrate of each temperature sensor. To do. For this reason, in the heat flow thermometer 200 according to this embodiment, even if the delay time changes due to a temperature change, the change depending on the assumed temperature change so that the signals from the temperature sensors do not overlap. It is assumed that the distances L1 to L4 are set so that the change due to the difference in the distances L1 to L4 is larger than the minutes.
  • FIG. 7 is a diagram illustrating a functional configuration of the reader 210.
  • the reader 210 includes a power supply unit including a battery, a rechargeable battery, and an operation switch including a power ON / OFF switch, but is omitted here.
  • reference numeral 700 denotes a reader unit, which includes an antenna 701, an electromagnetic wave emission / detection unit (electromagnetic wave emission unit and electromagnetic wave detection unit) 702, a signal conversion unit 703, and a signal processing unit 704.
  • the antenna 701 generates an electromagnetic wave having a predetermined frequency, for example, 20 MHz, and magnetically couples with the antenna connected to each temperature sensor of the heat flow thermometer 200, thereby exciting the comb electrodes of each temperature sensor. Or catching electromagnetic waves emitted from each temperature sensor.
  • a predetermined frequency for example, 20 MHz
  • the voltage applied to the antenna 701 is controlled in order to excite the comb-shaped electrode of the temperature sensor of the heat flow thermometer 200 via the antenna 701, or the heat flow thermometer 200 is connected via the antenna 701.
  • the electromagnetic wave emitted from each temperature sensor is caught, noise is removed through a band-pass filter, amplified, and then transmitted to the signal conversion unit 703.
  • signals obtained by the electromagnetic wave emission / detection unit 702 catching electromagnetic waves emitted from the comb electrodes 503, 513, 523, and 533 and emitted from the comb electrodes 504, 514, 524, and 534 Signals obtained by the electromagnetic wave emission / detection unit 702 catching the electromagnetic waves and processed by the electromagnetic wave emission / detection unit 702 are converted into digital data and transmitted to the signal processing unit 704.
  • the timing at which each signal becomes equal to or higher than a predetermined threshold is measured.
  • a delay time from when the electromagnetic waves from the comb electrodes 503 to 533 are caught until the electromagnetic wave from the comb electrodes 504 to 534 is caught, and a delay time set in advance for each of the first to fourth temperature sensors, Are respectively identified from which temperature sensor the signal is.
  • the temperature of each temperature sensor is calculated from the delay time based on the relational function between the temperature of each temperature sensor and the delay time stored in advance in each of the first to fourth temperature sensors, and sent to the control unit.
  • the control unit 711 controls operations of the electromagnetic wave emission detection unit 702, the signal conversion unit 703, and the signal processing unit 704. Further, based on the signal of each temperature sensor transmitted from the signal processing unit 704, the deep body temperature is calculated and stored in the storage unit 712 or displayed on the display unit 713. Furthermore, the deep body temperature data stored in the storage unit 712 is transmitted to another information processing device (another information processing device connected by wire via the wired communication unit 714) via the wired communication unit 714. .
  • the control unit 711 includes a CPU such as a microcomputer, a ROM that stores a control program and various data for the entire reader 210 executed by the CPU, and a RAM that temporarily stores measurement data and various data as a work area. And controls the operation and judgment of the reader 210 as a whole.
  • a CPU such as a microcomputer
  • ROM that stores a control program and various data for the entire reader 210 executed by the CPU
  • RAM that temporarily stores measurement data and various data as a work area. And controls the operation and judgment of the reader 210 as a whole.
  • the antennas are individually arranged.
  • each antenna was arranged so as to surround the outer periphery of the thermal resistor.
  • the outer periphery of the homogenizing member should be located inside the outer edge formed by the thermal resistor so that the antenna does not become an obstacle when the antenna catches or emits electromagnetic waves.
  • the size of the homogenizing member was defined. ⁇ Different distances between comb electrodes for each temperature sensor so that electromagnetic waves from multiple temperature sensors can be identified while catching and releasing electromagnetic waves in a short time with the reader. Configured.
  • the heat flow thermometer with the temperature sensor using the surface acoustic wave it becomes possible to reduce the temperature interference between the temperature sensors.
  • the deep body temperature can be calculated and displayed in a short time.
  • the excitation-side comb electrode and the receiving-side comb electrode are arranged, but the present invention is not limited to this.
  • a reflector that reflects surface acoustic waves generated from a comb-shaped electrode may be provided, and the surface acoustic waves reflected by the reflector may be received by the comb-shaped electrode.
  • the distance between the comb electrodes is set to satisfy the relationship of L1 ⁇ L2 ⁇ L3 ⁇ L4, but the present invention is not limited to this. Since the second temperature sensors 112 and 122 are covered with the uniformizing member 130 and are generally at the same temperature, the delay time associated with the temperature change is also substantially equal. On the other hand, the first temperature sensor 111 and the third temperature sensor 121 have different temperatures, and the delay time associated with the temperature change also differs. For this reason, it is important to configure so that the signal from the first temperature sensor 111 and the signal from the third temperature sensor 121 do not overlap. Therefore, for example, the distance between the comb-shaped electrodes may be configured to satisfy the relationship of L1 ⁇ L2 ⁇ L4 ⁇ L3.
  • the configuration is such that the thermal resistance Rt of the subcutaneous tissue of the subject can be set as a fixed or variable parameter, and only one set of thermal resistors in which two surface acoustic wave type temperature sensors are arranged to face each other is prepared. It is good.
  • the deep body temperature is calculated using the formula (3) or the formula (4) described in the first embodiment.

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  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

La présente invention est susceptible d'empêcher l'interférence thermique entre une pluralité de capteurs de température, et d'identifier le résultat de la détection de chaque capteur de température dans un thermomètre clinique à flux de chaleur passive. La présente invention est un thermomètre clinique (200) qui est mis en contact avec la surface du corps d'un sujet de manière à mesurer la température corporelle profonde, et est caractérisé en ce qu'il comporte: une première résistance thermique (113) sur lequel des antennes sont disposées, lesdites antennes étant connectées séparément à chacun d'un premier capteur de température (111) à ondes acoustiques de surface (OAS) et à un second capteur de température OAS (112); une seconde résistance thermique (123) sur laquelle des antennes sont disposées, lesdites antennes étant connectées séparément à chacun d'un troisième capteur de température OAS (121) et d'un quatrième capteur de température OAS (122); et un élément d'homogénéisation (130) conçu de manière à recouvrir les surfaces des premier et second corps de résistance thermique (113, 123) sur le côté faisant face à la surface sur le côté qui vient en contact avec la surface du corps. Le thermomètre clinique est en outre caractérisé en ce que les premier à quatrième capteurs de température à Ondes Acoustiques de Surface (111 à 122) ont chacun une électrode en forme de peigne positionnée sur celle-ci de telle manière que les temps de retard à la même température diffèrent les uns des autres.
PCT/JP2013/000732 2012-03-23 2013-02-12 Thermomètre clinique WO2013140711A1 (fr)

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
WO2017000295A1 (fr) * 2015-07-02 2017-01-05 深圳市谷玛鹤健康科技有限公司 Thermomètre clinique électronique et son procédé de commande
JP2020046257A (ja) * 2018-09-18 2020-03-26 富士電機株式会社 無線温度測定システム
CN113286991A (zh) * 2019-03-14 2021-08-20 生物数据银行股份有限公司 温度传感器单元及体内温度计
US11672428B2 (en) * 2017-11-30 2023-06-13 Techno-Commons Inc. Biological data measurement device

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Publication number Priority date Publication date Assignee Title
WO2019131203A1 (fr) 2017-12-27 2019-07-04 株式会社村田製作所 Thermomètre de type à fixation
EP4266017A3 (fr) 2018-12-06 2023-11-01 Avery Dennison Retail Information Services LLC Dispositif rfid à détection de température

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