JP7388266B2 - ear thermometer - Google Patents
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- JP7388266B2 JP7388266B2 JP2020054089A JP2020054089A JP7388266B2 JP 7388266 B2 JP7388266 B2 JP 7388266B2 JP 2020054089 A JP2020054089 A JP 2020054089A JP 2020054089 A JP2020054089 A JP 2020054089A JP 7388266 B2 JP7388266 B2 JP 7388266B2
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- 238000012937 correction Methods 0.000 claims description 49
- 210000000613 ear canal Anatomy 0.000 claims description 38
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical group [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 8
- 238000009529 body temperature measurement Methods 0.000 claims description 6
- 210000000883 ear external Anatomy 0.000 description 31
- 210000003454 tympanic membrane Anatomy 0.000 description 24
- 230000036760 body temperature Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 12
- 238000001514 detection method Methods 0.000 description 10
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 229920002050 silicone resin Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 210000003128 head Anatomy 0.000 description 4
- 241000746998 Tragus Species 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 208000031636 Body Temperature Changes Diseases 0.000 description 1
- 206010067482 No adverse event Diseases 0.000 description 1
- 230000007177 brain activity Effects 0.000 description 1
- 230000027288 circadian rhythm Effects 0.000 description 1
- 230000036757 core body temperature Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
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Description
本発明は、人等の外耳道内に挿入して体温を非接触で測定する耳式体温計に関する。 The present invention relates to an ear thermometer that is inserted into the external auditory canal of a person to measure body temperature without contact.
近年、人の体温を測定するに際し、プローブを人の外耳道内に挿入して鼓膜の温度を赤外線温度センサにより非接触で測定する耳式体温計が知られている(例えば、特許文献1参照。)。鼓膜温は、深部体温を良く反映していると言われている。 In recent years, ear thermometers have been known that measure a person's body temperature by inserting a probe into the person's ear canal and measuring the temperature of the eardrum using an infrared temperature sensor in a non-contact manner (for example, see Patent Document 1). . It is said that eardrum temperature is a good reflection of core body temperature.
しかしながら、外耳道の奥まで赤外線温度センサを挿入すると正確な鼓膜温を測定することができるものの、安全性の問題、また、外耳道の形状・大きさに個人差があるため、汎用製品を製造することが難しい。このため、外耳道入口付近に赤外線温度センサを設けることが提案されている。このような耳式体温計として、例えば、図9,10に示すような耳式体温計200が提案されている。すなわち、耳式体温計200は、バッテリや制御回路を収納する筐体210と、外耳道入口に係合する係合部220と、この係合部220の奥に設けられた挿入部230と、この挿入部230内部に設けられた赤外線温度センサ240とを備えている。赤外線温度センサ240の視野は、図9は狭い角度範囲、図10は広い角度範囲となっている。これらの図中Gは外耳道、Kは鼓膜、Hは人の頭部、Lは外耳外部を示している。 However, although it is possible to accurately measure eardrum temperature by inserting an infrared temperature sensor deep into the ear canal, there are safety issues and there are individual differences in the shape and size of the ear canal, so it is difficult to manufacture a general-purpose product. is difficult. For this reason, it has been proposed to provide an infrared temperature sensor near the entrance of the ear canal. As such an ear thermometer, for example, an ear thermometer 200 as shown in FIGS. 9 and 10 has been proposed. That is, the ear thermometer 200 includes a casing 210 that houses a battery and a control circuit, an engaging part 220 that engages with the entrance of the external auditory canal, an insertion part 230 provided at the back of this engaging part 220, and a housing 210 that houses a battery and a control circuit. An infrared temperature sensor 240 provided inside the section 230 is provided. The field of view of the infrared temperature sensor 240 is a narrow angular range in FIG. 9, and a wide angular range in FIG. In these figures, G indicates the external auditory canal, K indicates the eardrum, H indicates the human head, and L indicates the outside of the external ear.
しかしながら、図9に示すように視野範囲が狭い赤外線温度センサ240を用いると、赤外線温度センサ240の向きによって、視野範囲が二点鎖線P1の範囲、すなわち外耳外部(外耳壁)を測定する場合と、視野範囲が二点鎖線P2の範囲、すなわち鼓膜Kを測定する場合とが生じる。外耳外部の温度は外気によって温度変動しやすく、鼓膜Kの温度のみを測った場合よりも低い温度を検知することがある。また、外気温が変動すると、その外気温の変動に沿って測定体温が変動し、本来測定したい体温を正確に測定できない。 However, as shown in FIG. 9, when using an infrared temperature sensor 240 with a narrow field of view, depending on the direction of the infrared temperature sensor 240, the field of view may be within the range indicated by the two-dot chain line P1, that is, when measuring the outside of the outer ear (outer ear wall). , the visual field range is the range indicated by the two-dot chain line P2, that is, the case where the eardrum K is measured. The temperature outside the outer ear tends to fluctuate depending on the outside air, and a lower temperature may be detected than when only the temperature of the eardrum K is measured. Further, when the outside temperature fluctuates, the measured body temperature fluctuates along with the fluctuations in the outside temperature, making it impossible to accurately measure the body temperature that is originally intended to be measured.
一方、図10に示すように視野範囲が広い赤外線温度センサ240を用いると、視野範囲が二点鎖線Qの範囲、すなわち外耳外部の温度を含めて測定することになり、やはり本来測定したい体温を正確に測定できない。 On the other hand, if an infrared temperature sensor 240 with a wide viewing range is used as shown in FIG. 10, the viewing range will include the range indicated by the two-dot chain line Q, that is, the temperature outside the outer ear will be measured, and the body temperature that is originally desired to be measured will also be measured. Cannot measure accurately.
このような外気温の影響を排除するため、外気温を測定する温度センサを筐体210等に取り付けることも考えられる。しかし、筐体210は小型であり、温度センサをバッテリや制御基板を収容する筐体210に設けると、それらの発熱の影響を受け易く、正確な温度較正ができない。また、外耳外部の温度と外気温とは必ずしも一定の関係になるとは限らないことから、外気温を測定しても外耳外部の温度を導出することができない。 In order to eliminate the influence of such outside temperature, it is conceivable to attach a temperature sensor that measures the outside temperature to the housing 210 or the like. However, the casing 210 is small, and if the temperature sensor is provided in the casing 210 that houses the battery and the control board, it is susceptible to the heat generated by them, and accurate temperature calibration cannot be performed. Further, since the temperature outside the outer ear and the outside air temperature do not necessarily have a constant relationship, it is not possible to derive the temperature outside the outer ear even if the outside air temperature is measured.
本発明は、外気温の影響を受けて変動する外耳道温度を正確に測定することで、外気温による外耳道温度による測定誤差を補正し、体温を高精度に測定することを目的とする。 An object of the present invention is to accurately measure the external auditory canal temperature, which fluctuates under the influence of the external temperature, to correct measurement errors caused by the external external temperature and the external auditory canal temperature, and to measure body temperature with high precision.
本発明の一態様として、外耳道内奥側に向けて外耳道に挿入され、温度測定対象の温度を測定する非接触型の赤外線温度センサと、外気温影響の補正のために外耳道入口近傍の温度を測定する補正用温度センサと、前記赤外線温度センサによって得られた前記温度測定対象の温度と、前記補正用温度センサによって得られた前記外耳道入口近傍の温度とに基づいて、前記外気温影響が補正された前記温度測定対象の温度を導出する制御部と、
前記制御部を収容する筐体と、
を備え、前記補正用温度センサは、前記筐体から離間した前記筐体外部に設けられている。
One aspect of the present invention includes a non-contact infrared temperature sensor that is inserted into the ear canal toward the inner side of the ear canal and measures the temperature of the object to be measured, and a non-contact infrared temperature sensor that measures the temperature near the entrance of the ear canal to compensate for the influence of outside temperature. The outside temperature influence is corrected based on the correction temperature sensor to be measured, the temperature of the temperature measurement target obtained by the infrared temperature sensor, and the temperature near the entrance of the external auditory canal obtained by the correction temperature sensor. a control unit that derives the temperature of the temperature measurement target;
a casing that houses the control unit;
The correction temperature sensor is provided outside the casing and is spaced apart from the casing.
本発明によれば、外気温による体温変動の影響を排除することで、体温を高精度に測定することができる。 According to the present invention, body temperature can be measured with high accuracy by eliminating the influence of body temperature fluctuations due to outside temperature.
図1は本発明の第1の実施の形態に係る耳式体温計10を外耳道に装着した状態を示す模式図、図2は耳式体温計10を示す正面図、図3は耳式体温計10を装着した際の補正温度センサの装着位置の一例を示す正面図である。これらの図中Gは外耳道、Kは鼓膜、Hは人の頭部、Mは耳介、Rは耳珠、Sは耳甲介腔、Lは外耳外部を示している。 FIG. 1 is a schematic diagram showing the ear thermometer 10 according to the first embodiment of the present invention being attached to the external auditory canal, FIG. 2 is a front view showing the ear thermometer 10, and FIG. 3 is the ear thermometer 10 being attached. It is a front view which shows an example of the mounting position of the correction|amendment temperature sensor at the time of doing. In these figures, G indicates the external auditory canal, K indicates the eardrum, H indicates the human head, M indicates the auricle, R indicates the tragus of the ear, S indicates the concha cavity, and L indicates the outside of the external ear.
耳式体温計10は、外耳道入口に係合する筐体20と、この筐体20の側壁面に取り付けられ、外耳道Gに挿入されて固定される耳挿入部30と、筐体20の後述する制御部22(演算部)に接続された補正用温度センサ50,60とを備えている。筐体20はシリコン樹脂材製のケース21を具備しており、ケース21内に、図示しない、バッテリ、メモリ、制御回路、無線通信部等を備えた制御部22が収容されている。シリコン樹脂材は人体への影響が少なく、柔軟な材質で、かつ、熱伝導率が低い。 The ear thermometer 10 includes a housing 20 that engages with the entrance of the external auditory canal, an ear insertion part 30 that is attached to the side wall of the housing 20, and is inserted into the external auditory canal G and fixed therein, and controls for the housing 20 that will be described later. The correction temperature sensors 50 and 60 are connected to the section 22 (calculation section). The housing 20 includes a case 21 made of a silicone resin material, and a control section 22 (not shown) including a battery, a memory, a control circuit, a wireless communication section, etc. is housed in the case 21. Silicone resin material has little effect on the human body, is a flexible material, and has low thermal conductivity.
制御部22は、後述するようにして外耳外部温度T1と赤外線受光温度T2に基づいて演算を行う。 The control unit 22 performs calculations based on the outer ear external temperature T1 and the infrared light receiving temperature T2 as described later.
耳挿入部30は筒状に形成されたシリコン樹脂材製のケース31を備えている。ケース31はケース21よりも柔軟な材質であることが耳挿入時の負担を軽減する観点から望ましい。ケース31の鼓膜K側には開口部32が設けられており、赤外線温度センサ40が収容されている。赤外線温度センサ40は広めの視野角を有している。赤外線温度センサ40は、例えば、サーモパイル、ボロメーター等で構成されており、検出信号が出力され、制御部22による処理において赤外線受光温度T2が導出される。 The ear insertion part 30 includes a cylindrical case 31 made of silicone resin. It is desirable that the case 31 be made of a softer material than the case 21 from the viewpoint of reducing the burden upon insertion into the ear. An opening 32 is provided on the side of the eardrum K of the case 31, and an infrared temperature sensor 40 is accommodated therein. The infrared temperature sensor 40 has a wide viewing angle. The infrared temperature sensor 40 is composed of, for example, a thermopile, a bolometer, etc., and outputs a detection signal, from which an infrared reception temperature T2 is derived in processing by the control unit 22.
補正用温度センサ50は、温度測定素子である、例えば、サーミスタ(温度センサ)51と、このサーミスタ51と制御部22とを接続するケーブル(リード線)52とを備えている。補正用温度センサ60も補正用温度センサ50と同様に、サーミスタ(温度センサ)61と、このサーミスタ61と制御部22とを接続するケーブル(リード線)62とを備えている。なお、ケーブル52,62の長さは数センチ程度である。 The correction temperature sensor 50 includes a temperature measuring element, such as a thermistor (temperature sensor) 51, and a cable (lead wire) 52 that connects the thermistor 51 and the control unit 22. Like the correction temperature sensor 50, the correction temperature sensor 60 also includes a thermistor (temperature sensor) 61 and a cable (lead wire) 62 that connects the thermistor 61 and the control section 22. Note that the lengths of the cables 52 and 62 are approximately several centimeters.
補正用温度センサ50,60からは、それぞれ検出信号が出力され、制御部22において平均値がとられ、外耳外部温度T1が導出される。 Detection signals are output from each of the correction temperature sensors 50 and 60, and the average value is taken by the control unit 22 to derive the outer ear external temperature T1.
このように構成された耳式体温計10は、次のようにして体温を測定する。すなわち、耳式体温計10を外耳道Gの入口まで近づけ、補正用温度センサ50,60のサーミスタ51,61を外耳道G入口付近、例えば、耳珠R裏及び耳甲介腔S等に接着する。接着には、肌に安全な粘着テープや粘着剤を用いる。そして、耳挿入部30を外耳道Gに向けて挿入し、ケース21と耳珠R裏及び耳甲介腔Sによりサーミスタ51,61を挟持する。 The ear thermometer 10 configured as described above measures body temperature in the following manner. That is, the ear thermometer 10 is brought close to the entrance of the external auditory canal G, and the thermistors 51 and 61 of the correction temperature sensors 50 and 60 are adhered to the vicinity of the entrance of the external auditory canal G, for example, the back of the tragus R and the concha cavity S. For adhesion, use adhesive tape or adhesive that is safe for the skin. Then, the ear insertion part 30 is inserted toward the external auditory canal G, and the thermistors 51 and 61 are sandwiched between the case 21, the back of the tragus R, and the concha cavity S.
このような状態で、耳式体温計10の電源を投入すると、制御部22が起動し、制御部22に接続された赤外線温度センサ40、補正用温度センサ50,60が測定を開始する。赤外線温度センサ40は、先端側から入力される赤外線強度を測定する。測定された赤外線強度は検出信号として出力され、制御部22において増幅やA/D変換等の処理が行われて赤外線受光温度T2が導出される。 When the ear thermometer 10 is powered on in such a state, the control section 22 is activated, and the infrared temperature sensor 40 and correction temperature sensors 50 and 60 connected to the control section 22 start measurement. The infrared temperature sensor 40 measures the intensity of infrared rays input from the tip side. The measured infrared intensity is output as a detection signal, and the controller 22 performs processing such as amplification and A/D conversion to derive the infrared reception temperature T2.
補正用温度センサ50,60は、サーミスタ51,61によって接触している箇所の温度を測定し、検出信号として制御部22に入力される。検出信号は、制御部22において増幅、平均化、A/D変換等の処理が行われて外耳外部温度T1が導出される。 The correction temperature sensors 50 and 60 measure the temperature of the parts that are in contact with the thermistors 51 and 61, and input the measured temperature to the control unit 22 as a detection signal. The detection signal is subjected to processing such as amplification, averaging, and A/D conversion in the control unit 22 to derive the outer ear external temperature T1.
制御部22では、次のようにして、鼓膜温連動温度T3を導出する。なお、図4は耳式体温計10によって測定された外耳外部温度T1の温度変化を示す説明図、図5は耳式体温計10によって測定された赤外線受光温度T2の温度変化を示す説明図、図6は耳式体温計10で導出された鼓膜温連動温度T3の温度変化を示す説明図である。 The control unit 22 derives the eardrum temperature-linked temperature T3 as follows. In addition, FIG. 4 is an explanatory diagram showing a temperature change in the outer ear external temperature T1 measured by the ear thermometer 10, FIG. 5 is an explanatory diagram showing a temperature change in the infrared reception temperature T2 measured by the ear thermometer 10, and FIG. 1 is an explanatory diagram showing a temperature change in the eardrum temperature-linked temperature T3 derived by the ear thermometer 10. FIG.
図1に示すように、外耳外部温度T1の温度変化を測定するサーミスタ51,61は、筐体20から離間した、外気に触れる部分に配置されることから、外気の影響を受けやすく、変動の大きな検出信号が得られるが、筐体20に収容されている制御部22が備える、バッテリ、メモリ、制御回路、無線通信部等が発する発熱による影響を受けにくく、測定される温度は外耳道G内部の温度に近くなっている。なお、筐体20が具備しているケース21は低熱伝導率の材質で形成されており、また熱容量の大きい外耳外部L側からの影響も大きいことから、筐体20からの熱伝導による誤差の発生は最小限に抑えられる。なお、仮に筐体20がサーミスタ51,61に影響を与えるような発熱・吸熱をおこすような状態ならば、それは外耳外部Lの温度にも影響を及ぼすことになるため、影響は相殺されることになる。 As shown in FIG. 1, the thermistors 51 and 61 that measure temperature changes in the outer ear external temperature T1 are placed in areas that are separated from the housing 20 and are in contact with the outside air, so they are easily influenced by the outside air and are subject to fluctuations. Although a large detection signal can be obtained, it is not easily affected by the heat generated by the battery, memory, control circuit, wireless communication unit, etc. included in the control unit 22 housed in the housing 20, and the measured temperature is within the external auditory canal G. The temperature is close to that of Note that the case 21 included in the case 20 is made of a material with low thermal conductivity, and the influence from the external ear L side, which has a large heat capacity, is large, so the error due to heat conduction from the case 20 is reduced. Occurrences are kept to a minimum. Note that if the housing 20 is in a state where it generates heat or absorbs heat that affects the thermistors 51 and 61, this will also affect the temperature outside the outer ear L, so the effects will be canceled out. become.
次に、赤外線受光温度T2を測定する赤外線温度センサ40は、ほぼ体温レベルを示す鼓膜Kの温度を維持するものの、外気温の影響を受ける外耳外部Lも視野内に含むため、ある程度外耳外部温度T1に連動するように変動する。 Next, the infrared temperature sensor 40 that measures the infrared reception temperature T2 maintains the temperature of the eardrum K, which is approximately at the body temperature level, but also includes the external ear L, which is affected by the outside temperature, within its field of view, so the external ear temperature is increased to some extent. It fluctuates in conjunction with T1.
ここで、外耳外部温度T1と赤外線受光温度T2の変動比率係数をkとし、外耳外部温度T1の基準値(例えば外耳外部温度T1の平均値)をTrefとして、各測定ポイントにおける補正後温度Tを以下のような式(1)で求める。 Here, let k be the variation ratio coefficient between outer ear external temperature T1 and infrared light reception temperature T2, and let Tref be the reference value of outer ear external temperature T1 (for example, the average value of outer ear external temperature T1), and calculate the corrected temperature T at each measurement point. It is calculated using the following equation (1).
T=T2-k(T1-Tref) …(1)
外耳外部温度T1の変動を赤外線受光温度T2の変動比率に合わせた上で、Trefより多ければ引き、少なければ足すことで、外耳外部温度T1の変動を赤外線受光温度T2から除去している。
T=T2-k(T1-Tref)...(1)
After adjusting the variation in the outer ear external temperature T1 to the variation ratio of the infrared light receiving temperature T2, the variation in the outer ear external temperature T1 is removed from the infrared light receiving temperature T2 by subtracting it if it is greater than Tref and adding it if it is less than Tref.
このようにして導出された補正後温度Tは、鼓膜温の動きを示す鼓膜温連動温度T3であるといえる。鼓膜温連動温度T3は制御部22において導出された体温データとなる。体温データはメモリに記憶されるか、無線等により外部に出力される。 It can be said that the corrected temperature T derived in this way is a tympanic membrane temperature-linked temperature T3 that indicates the movement of the tympanic membrane temperature. The eardrum temperature-linked temperature T3 is body temperature data derived by the control unit 22. Body temperature data is stored in memory or outputted to the outside via wireless or the like.
上述したように耳式体温計10によれば、1℃~2℃レベルの小さなものである鼓膜Kの温度変動を外気温による影響を除去することで、外気温の変動に鼓膜温変動が埋もれず、精度の高い鼓膜温の測定ができる。なお、鼓膜温変動、すなわち体温変化は、概日リズムや、脳活動を示すと言われ、重要なバイタルサインとして有用である。 As described above, according to the ear thermometer 10, by removing the influence of the outside temperature on the temperature fluctuations of the eardrum K, which are small at the level of 1°C to 2°C, the fluctuations in the eardrum temperature are not buried in the fluctuations of the outside temperature. , it is possible to measure eardrum temperature with high accuracy. Incidentally, eardrum temperature fluctuations, that is, body temperature changes, are said to indicate circadian rhythms and brain activity, and are useful as important vital signs.
一方、サーミスタ51,61が筐体20の外部に設置することで、筐体20の内部に設置した場合に比べて制御部22の発熱による影響を除去することができる。このため、筐体20内部に遮熱壁の設置等が不要となり、筐体の構成を簡素化することができ、小型化・軽量化することができる。 On the other hand, by installing the thermistors 51 and 61 outside the casing 20, the influence of heat generated by the control unit 22 can be removed compared to when the thermistors 51 and 61 are installed inside the casing 20. Therefore, it is not necessary to install a heat shielding wall inside the housing 20, and the configuration of the housing can be simplified and the size and weight can be reduced.
なお、ケーブル52,62を少し長めに設定し、筐体20から離間した位置に粘着テープや粘着剤により接着してもよい。サーミスタ51,61は、外耳道Gの口径が大きく、耳挿入部30と外耳外部の間に余裕がある場合には温度センサを耳挿入部横付近に装着してもよい。 Note that the cables 52 and 62 may be set a little longer and adhered to positions spaced apart from the housing 20 using adhesive tape or adhesive. For the thermistors 51 and 61, if the diameter of the ear canal G is large and there is a margin between the ear insertion part 30 and the outside of the outer ear, a temperature sensor may be attached near the side of the ear insertion part.
図7は本発明の第2の実施の形態に係る耳式体温計10Aを示す上面図である。図7において、図2と同一機能部分には同一符号を付し、その詳細な説明は省略する。 FIG. 7 is a top view showing an ear thermometer 10A according to the second embodiment of the present invention. In FIG. 7, the same reference numerals are given to the same functional parts as in FIG. 2, and detailed explanation thereof will be omitted.
耳式体温計10Aは、補正用温度センサ50,60の代わりに補正用温度センサ50A,60Aを備えている。補正用温度センサ50A,60Aはいずれも筐体20外表面に取り付けられており、制御部22に接続されている。補正用温度センサ50A,60Aは、補正用温度センサ50,60と同様にして外耳外部温度T1を測定し、制御部22は、上述したように、外耳外部温度T1と赤外線温度センサ40が測定する赤外線受光温度T2とに基づいて鼓膜温連動温度T3を導出する。したがって、上述した耳式体温計10と同様の効果を得ることができる。 The ear thermometer 10A includes correction temperature sensors 50A and 60A instead of the correction temperature sensors 50 and 60. The correction temperature sensors 50A and 60A are both attached to the outer surface of the housing 20 and connected to the control unit 22. The correction temperature sensors 50A and 60A measure the outer ear external temperature T1 in the same manner as the correction temperature sensors 50 and 60, and the control unit 22 measures the outer ear external temperature T1 and the infrared temperature sensor 40 as described above. The eardrum temperature linked temperature T3 is derived based on the infrared light receiving temperature T2. Therefore, the same effects as those of the ear thermometer 10 described above can be obtained.
図8は本発明の第3の実施の形態に係る耳式体温計140が設けられた生体センサ100を示す説明図である。 FIG. 8 is an explanatory diagram showing a biosensor 100 provided with an ear thermometer 140 according to a third embodiment of the present invention.
生体センサ100は、電池や回路基板等を収納し、外耳道Gの入口より十分に大きく形成された筐体110を備えている。筐体110には、耳介Mに引っ掛けるための引掛具120と、筐体110の側壁面に設けられた脈拍検知センサ130と、外耳道Gに挿入される耳式体温計140が設けられている。筐体110は、外耳道Gより十分に大きく形成され、外耳道Gに挿入された耳式体温計140との位置関係により外耳道G入口に係止して装着される形状となっている。耳式体温計140はシリコン樹脂材製の筐体141を有している。 The biosensor 100 includes a housing 110 that houses a battery, a circuit board, etc., and is formed sufficiently larger than the entrance of the external auditory canal G. The housing 110 is provided with a hook 120 for hooking onto the auricle M, a pulse detection sensor 130 provided on the side wall surface of the housing 110, and an ear thermometer 140 inserted into the external auditory canal G. The housing 110 is formed to be sufficiently larger than the external auditory canal G, and has a shape that allows it to be attached to the entrance of the external auditory canal G due to its positional relationship with the ear thermometer 140 inserted into the external auditory canal G. The ear thermometer 140 has a housing 141 made of silicone resin.
筐体141内には図示しない、バッテリ、メモリ、制御回路、無線通信部等を備えた制御部142が収容されている。さらに、赤外線温度センサ150が保持されている。制御部142には、補正用温度センサ160,170が接続されている。補正用温度センサ160,170は、温度測定素子である、例えば、サーミスタ161,171が取り付けられている。補正用温度センサ160,170は、耳式体温計140とは別体である他の部品、すなわち、脈拍検知センサ130及び引掛具120に取り付けられている。 A control unit 142 (not shown) including a battery, a memory, a control circuit, a wireless communication unit, and the like is housed within the casing 141 . Furthermore, an infrared temperature sensor 150 is held. Correction temperature sensors 160 and 170 are connected to the control unit 142 . The correction temperature sensors 160 and 170 are equipped with temperature measuring elements such as thermistors 161 and 171, for example. The correction temperature sensors 160 and 170 are attached to other components separate from the ear thermometer 140, that is, the pulse detection sensor 130 and the hook 120.
脈拍検知センサ130及び引掛具120はいずれも人の頭部Hに対し、外気温を遮断するようにして接触しているため、外気温に影響された体温を測定することができる。したがって、上述した補正用温度センサ50,60と同様にして外耳外部温度T1を測定し、制御部142は、上述したように、外耳外部温度T1と赤外線温度センサ150が測定する赤外線受光温度T2とに基づいて鼓膜温連動温度T3を導出する。したがって、上述した耳式体温計10と同様の効果を得ることができる。 Since both the pulse detection sensor 130 and the hook 120 are in contact with the human head H in a manner that blocks outside temperature, it is possible to measure the body temperature influenced by the outside temperature. Therefore, the outer ear external temperature T1 is measured in the same manner as the correction temperature sensors 50 and 60 described above, and the control unit 142 adjusts the outer ear external temperature T1 and the infrared reception temperature T2 measured by the infrared temperature sensor 150, as described above. Based on this, the eardrum temperature linked temperature T3 is derived. Therefore, the same effects as those of the ear thermometer 10 described above can be obtained.
なお、本発明は前記実施の形態に限定されるものではない。例えば、上述した例では、補正用温度センサは、紐状の接続部を介して筐体と接続されているが、筐体の発熱による影響を抑えることができれば、他の構造でもよい。また、耳式体温計の筐体等の素材をシリコン樹脂材として説明したが、人体へ悪影響が無く、かつ、熱伝導性が低ければ他の樹脂材でもよい。補正用温度センサを2つとしているが、1つでもよく、また3つ以上設けてもよい。複数の補正用温度センサを用いた場合には、代表値を平均値にする他、低い方を採る等、適宜定めてもよい。なお、補正用温度センサを複数用いた場合は、人体に接着した補正用温度センサのうちの一方が人体から離脱した場合であっても、他方の補正用温度センサにより外耳外部温度T1を測定することができ、鼓膜温連動温度T3導出の確実性が高まる。この他、本発明の要旨を逸脱しない範囲で種々変形実施可能であるのは勿論である。 Note that the present invention is not limited to the embodiments described above. For example, in the above example, the correction temperature sensor is connected to the casing via a string-like connection part, but other structures may be used as long as the influence of heat generated by the casing can be suppressed. Furthermore, although silicone resin is used as the material for the casing of the ear thermometer, other resin materials may be used as long as they have no adverse effects on the human body and have low thermal conductivity. Although there are two temperature sensors for correction, one or three or more may be provided. When a plurality of correction temperature sensors are used, the representative value may be an average value or a lower value may be used as appropriate. In addition, when multiple correction temperature sensors are used, even if one of the correction temperature sensors adhered to the human body detaches from the human body, the outer ear external temperature T1 is measured by the other correction temperature sensor. This increases the reliability of deriving the eardrum temperature-linked temperature T3. It goes without saying that various other modifications can be made without departing from the gist of the present invention.
本発明のいくつかの実施形態を説明したが、本発明は特許請求の範囲に記載された発明とその均等の範囲に含まれる。以下に、本願出願の当初の特許請求の範囲に記載された発明を付記する。
[付記1]
外耳道内奥側に向けて外耳道に挿入され、温度測定対象の温度を測定する非接触型の赤外線温度センサと、
外気温影響の補正のために外耳道入口近傍の温度を測定する補正用温度センサと、
前記赤外線温度センサによって得られた前記温度測定対象の温度と、前記補正用温度センサによって得られた前記外耳道入口近傍の温度とに基づいて、前記外気温影響が補正された前記温度測定対象の温度を導出する制御部と、
前記制御部を収容する筐体と、
を備え、
前記補正用温度センサは、前記筐体から離間した前記筐体外部に設けられている耳式体温計。
[付記2]
前記補正用温度センサは、前記外耳道入口側と前記筐体との間に挟持されて配置される[付記1]に記載の耳式体温計。
[付記3]
前記補正用温度センサは、前記制御部に接続されるリード線と、前記リード線の先端に取り付けられた温度センサとを具備する[付記1]又は[付記2]に記載の耳式体温計。
[付記4]
前記補正用温度センサは、前記筐体から離間した別部材に取り付けられている[付記1]
に記載の耳式体温計。
[付記5]
前記補正用温度センサは、複数設けられている[付記1]乃至[付記4]の何れか一項に記載の耳式体温計。
Although some embodiments of the present invention have been described, the present invention is included in the scope of the invention described in the claims and its equivalents. Below, the invention described in the original claims of the present application will be added.
[Additional note 1]
A non-contact infrared temperature sensor that is inserted into the ear canal toward the inner side of the ear canal and measures the temperature of the object to be measured;
a correction temperature sensor that measures the temperature near the entrance of the ear canal to correct for the influence of outside temperature;
The temperature of the temperature measurement target with the outside temperature influence corrected based on the temperature of the temperature measurement target obtained by the infrared temperature sensor and the temperature near the entrance of the external auditory canal obtained by the correction temperature sensor. a control unit that derives
a casing that houses the control unit;
Equipped with
The correction temperature sensor is an ear thermometer provided outside the housing and spaced apart from the housing.
[Additional note 2]
The ear thermometer according to [Appendix 1], wherein the correction temperature sensor is disposed to be sandwiched between the external auditory canal entrance side and the casing.
[Additional note 3]
The ear thermometer according to [Appendix 1] or [Appendix 2], wherein the correction temperature sensor includes a lead wire connected to the control section and a temperature sensor attached to the tip of the lead wire.
[Additional note 4]
The correction temperature sensor is attached to a separate member separated from the housing [Additional Note 1]
The ear thermometer described in .
[Additional note 5]
The ear thermometer according to any one of [Appendix 1] to [Appendix 4], wherein a plurality of correction temperature sensors are provided.
10…耳式体温計、10A…耳式体温計、20…筐体、21…ケース、22…制御部(演算部)、30…耳挿入部、31…ケース、32…開口部、40…赤外線温度センサ、50…補正用温度センサ、50A…補正用温度センサ、51…サーミスタ(温度センサ)、52…ケーブル(リード線)、60…補正用温度センサ、60A…補正用温度センサ、61…サーミスタ(温度センサ)、62…ケーブル(リード線)、100…生体センサ、110…筐体、120…引掛具、130…脈拍検知センサ、140…耳式体温計、141…筐体、142…制御部(演算部)、150…赤外線温度センサ、160…補正用温度センサ、161…サーミスタ、170…補正用温度センサ、171…サーミスタ、200…耳式体温計、210…筐体、220…係合部、230…挿入部、240…赤外線温度センサ、G…外耳道、H…人の頭部、K…鼓膜、L…外耳外部、M…耳介、S…耳甲介腔、T…補正後温度、T1…外耳外部温度、T2…赤外線受光温度、T3…鼓膜温連動温度。 DESCRIPTION OF SYMBOLS 10... Ear thermometer, 10A... Ear thermometer, 20... Housing, 21... Case, 22... Control part (calculation part), 30... Ear insertion part, 31... Case, 32... Opening part, 40... Infrared temperature sensor , 50...Temperature sensor for correction, 50A...Temperature sensor for correction, 51...Thermistor (temperature sensor), 52...Cable (lead wire), 60...Temperature sensor for correction, 60A...Temperature sensor for correction, 61...Thermistor (temperature) sensor), 62... Cable (lead wire), 100... Biosensor, 110... Housing, 120... Hook, 130... Pulse detection sensor, 140... Ear thermometer, 141... Housing, 142... Control unit (calculating unit) ), 150... infrared temperature sensor, 160... temperature sensor for correction, 161... thermistor, 170... temperature sensor for correction, 171... thermistor, 200... ear type thermometer, 210... housing, 220... engaging portion, 230... insertion Part, 240...Infrared temperature sensor, G...Earth canal, H...Human head, K...Eardrum, L...Outer ear, M...Auricle, S...Concha cavity, T...Temperature after correction, T1...Outer ear Temperature, T2...Infrared light reception temperature, T3...Temperature linked to eardrum temperature.
Claims (5)
外気温影響の補正のために外耳道入口近傍の温度を測定する補正用温度センサと、
前記赤外線温度センサによって得られた前記温度測定対象の温度と、前記補正用温度センサによって得られた前記外耳道入口近傍の温度とに基づいて、前記外気温影響が補正された前記温度測定対象の温度を導出する制御部と、
前記制御部を収容する筐体と、
を備え、
前記補正用温度センサは、前記筐体から離間した前記筐体外部に設けられている耳式体温計。 A non-contact infrared temperature sensor that is inserted into the ear canal toward the inner side of the ear canal and measures the temperature of the object to be measured;
a correction temperature sensor that measures the temperature near the entrance of the ear canal to correct for the influence of outside temperature;
The temperature of the temperature measurement target with the outside temperature influence corrected based on the temperature of the temperature measurement target obtained by the infrared temperature sensor and the temperature near the entrance of the external auditory canal obtained by the correction temperature sensor. a control unit that derives
a casing that houses the control unit;
Equipped with
The correction temperature sensor is an ear thermometer provided outside the housing and spaced apart from the housing.
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JP2000014649A (en) | 1998-07-03 | 2000-01-18 | Terumo Corp | Ear type thermometer |
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JP2000014649A (en) | 1998-07-03 | 2000-01-18 | Terumo Corp | Ear type thermometer |
JP2001008904A (en) | 1999-06-28 | 2001-01-16 | Techno Research Kk | Ear clinical thermometer and measuring method for ear clinical thermometer using card |
US20020035340A1 (en) | 2000-09-15 | 2002-03-21 | Jacob Fraden | Ear temperature monitor and method of temperature measurement |
US20020191670A1 (en) | 2001-06-07 | 2002-12-19 | Huang Yu Chien | Infrared radiation ear thermometer and offset method |
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