WO2003106947A1 - Infrared ear thermometer - Google Patents

Infrared ear thermometer Download PDF

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Publication number
WO2003106947A1
WO2003106947A1 PCT/DE2003/001829 DE0301829W WO03106947A1 WO 2003106947 A1 WO2003106947 A1 WO 2003106947A1 DE 0301829 W DE0301829 W DE 0301829W WO 03106947 A1 WO03106947 A1 WO 03106947A1
Authority
WO
WIPO (PCT)
Prior art keywords
infrared
ear thermometer
unit
sensor
evaluation unit
Prior art date
Application number
PCT/DE2003/001829
Other languages
German (de)
French (fr)
Inventor
Wolfgang Baumeier
Original Assignee
Universitätsklinikum Lübeck
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 Universitätsklinikum Lübeck filed Critical Universitätsklinikum Lübeck
Publication of WO2003106947A1 publication Critical patent/WO2003106947A1/en

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/04—Casings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/025—Interfacing a pyrometer to an external device or network; User interface
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/04—Casings
    • G01J5/049—Casings for tympanic thermometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/08—Optical arrangements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
    • G01J5/02—Constructional details
    • G01J5/08—Optical arrangements
    • G01J5/0893—Arrangements to attach devices to a pyrometer, i.e. attaching an optical interface; Spatial relative arrangement of optical elements, e.g. folded beam path

Definitions

  • thermometer hrfrarot ear thermometer
  • the invention relates to an infrared ear thermometer with an infrared sensor unit to be inserted into the ear canal of the patient and aligned with the eardrum and an evaluation unit provided with a display.
  • Infrared ear thermometers are known in different designs. These are designed in the manner of a conventional clinical thermometer, but are provided at one end with a j-infrared sensor unit. The thermometer is inserted into the patient's inner ear and aligned with the eardrum. These infrared ear thermometers are based on the knowledge that the temperature of the eardrum largely corresponds to the temperature of the brain and thus the core of the body.
  • thermometers In the known hifrarot ear thermometers, these have to be inserted manually deep into the ear canal and held in position during the measurement. The problem arises that the sensor must be aligned directly with the eardrum. If this is not the case, a value is displayed that is too low. Other problems arise from contamination, such as from cerumen or liquid. Successive measurements on the same ear show a high degree of scatter.
  • the object of the invention is to develop the known infrared ear thermometer in such a way that it is less susceptible to faults and is particularly suitable for emergency medicine.
  • this object is achieved by the design in the manner of a stethoscope or headphones with an elastic strap, on the two ends of which an infrared sensor unit is arranged, both sensor units acting on the evaluation unit and the evaluation unit the highest of those of the two sensor units value measured over a certain period of time.
  • the infrared sensor units are preferably inserted in olive-shaped carriers, whereby these olive-shaped carriers can be made of an elastic material, which allow deep insertion into the ear canal without injuring it.
  • a particularly preferred embodiment is characterized in that the alarm unit is provided with a device for setting at least one alarm value.
  • a device can also be provided for setting an alarm gradient, that is to say a value of the temperature change, when an acoustic or visual alarm is triggered.
  • thermometer a j-infrared ear thermometer proposed here allows a reliable statement about the temperature of the tympanic membrane: the design at the ends of an elastic bracket provides a force pointing towards the inside of the ear canal, which counteracts a loosening of the sensor.
  • the fact that a sensor is inserted into each of the two ears makes the probability that both sensors are misaligned less likely, even if one sensor does not function properly, the measured value output is not influenced, since the larger measured value Value is displayed.
  • the highest of the values measured over a certain period of time is also determined and displayed, short-term misalignments also of both infrared temperature sensors do not influence the measurement result.
  • the specific time period should be a sliding window.

Abstract

The invention relates to an infrared ear thermometer comprising an infrared sensor unit which can be introduced into the auditory canal of the patient and oriented towards the eardrum, and an evaluation unit which is provided with a display. The inventive thermometer is embodied in the form of a stethoscope with an elastic stirrup piece, an infrared sensor unit being respectively arranged on the two ends of said stirrup piece.

Description

hrfrarot-Ohrthermometer hrfrarot ear thermometer
Die Erfindung betrifft ein Imrarot-Ohrthermometer mit einer in den Gehörgang des Patienten einzuführenden und auf das Trommelfell auszurichtenden Infrarot- Sensoreinheit und einer mit einem Display versehenen Auswerteeinheit.The invention relates to an infrared ear thermometer with an infrared sensor unit to be inserted into the ear canal of the patient and aligned with the eardrum and an evaluation unit provided with a display.
Infrarot-Ohrthermometer sind in unterschiedlicher Ausgestaltung bekannt. Diese sind nach Art eines üblichen Fieberthermometers ausgebildet, sind an ihrem einen Ende jedoch mit einer j-nfrarot-Sensoreinheit versehen. Das Thermometer wird in das Innenohr des Patienten eingeführt und auf das Trommelfell ausgerichtet. Diesen Infrarot-Ohrthermometern liegt die Erkenntnis zugrunde, dass die Temperatur des Trommelfells der Gehirntemperatur und damit der Körperkerntemperatur weitestgehend entspricht.Infrared ear thermometers are known in different designs. These are designed in the manner of a conventional clinical thermometer, but are provided at one end with a j-infrared sensor unit. The thermometer is inserted into the patient's inner ear and aligned with the eardrum. These infrared ear thermometers are based on the knowledge that the temperature of the eardrum largely corresponds to the temperature of the brain and thus the core of the body.
Bei den bekannten hifrarot-Ohrthermometern müssen diese manuell tief in den Gehörgang eingeführt und während der Messung in Position gehalten werden. Dabei stellt sich das Problem, dass der Sensor direkt auf das Trommelfell ausgerichtet sein muß, ist dies nicht der Fall, wird ein Wert angezeigt, der zu niedrig ist. Weitere Probleme ergeben sich durch Verunreinigungen, etwa durch Cerumen oder Flüssigkeit. Nacheinander durchgeführte Messungen am gleichen Ohr weisen eine hohe Streuung auf.In the known hifrarot ear thermometers, these have to be inserted manually deep into the ear canal and held in position during the measurement. The problem arises that the sensor must be aligned directly with the eardrum. If this is not the case, a value is displayed that is too low. Other problems arise from contamination, such as from cerumen or liquid. Successive measurements on the same ear show a high degree of scatter.
Der Erfindung liegt die Aufgabe zugrunde, das bekannte Infrarot-Ohrthermometer derart weiterzubilden, dass es weniger störanfällig ist und insbesondere auch für die Notfallmedizin geeignet ist.The object of the invention is to develop the known infrared ear thermometer in such a way that it is less susceptible to faults and is particularly suitable for emergency medicine.
Erfmdungsgemäß wird diese Aufgabe gelöst durch die Ausbildung nach Art eines Stethoskops oder eines Kopfhörers mit einem elastischen Bügel, an dessen beiden Enden jeweils eine Infrarot-Sensoreinheit angeordnet ist, wobei beide Sensoreinheiten auf die Auswerteeinheit wirken und die Auswerteeinheit den höchsten der von den beiden Sensoreinheiten während eines bestimmten Zeitraums gemessenen Wert ermittelt. Die Infrarot-Sensoreinheiten sind vorzugsweise in olivenförmige Träger eingesetzt, wbei diese olivenförmigen Träger aus einem elastischen Material gefertigt sein können, die ein tiefes Einführen in den Gehörgang zulassen, ohne dies zu verletzen.According to the invention, this object is achieved by the design in the manner of a stethoscope or headphones with an elastic strap, on the two ends of which an infrared sensor unit is arranged, both sensor units acting on the evaluation unit and the evaluation unit the highest of those of the two sensor units value measured over a certain period of time. The infrared sensor units are preferably inserted in olive-shaped carriers, whereby these olive-shaped carriers can be made of an elastic material, which allow deep insertion into the ear canal without injuring it.
Eine besonders bevorzugte Ausführungsform zeichnet sich dadurch aus, dass die Alarmeinheit mit einer Einrichtung zum Einstellen von wenigstens einem Alarmwert versehen ist. Dabei kann auch eine Einrichtung zum Einstellen eines Alarmgradienten versehen sein, also eines Werts der Temperaturänderung, bei dessen Erreichein ein akustischer oder optischer Alarm ausgelöst wird.A particularly preferred embodiment is characterized in that the alarm unit is provided with a device for setting at least one alarm value. In this case, a device can also be provided for setting an alarm gradient, that is to say a value of the temperature change, when an acoustic or visual alarm is triggered.
Die hier vorgeschlagene Ausbildung eines j-nfrarot-Ohrthermometers erlaubt eine zuverlässige Aussage über die Trornmelfelltemperatur: Durch die Ausbildung an den Enden eines elastischen Bügels ist eine in Richtung auf das Innere des Gehörgangs weisende Kraft gegeben, die einem Lösen des Sensors entgegenwirkt. Insbesondere aber ist dadurch, dass in jedes der beiden Ohren ein Sensor eingeführt ist, die Wahrscheinlichkeit, dass beide Sensoren fehlausgerichtet sind, weniger wahrscheinlich, selbst wenn der eine Sensor nicht ordnungsgemäß funktioniert, wird der ausgegebene Messwert nicht beeinflusst, da ja der jeweils größere gemessene Wert angezeigt wird.The design of a j-infrared ear thermometer proposed here allows a reliable statement about the temperature of the tympanic membrane: the design at the ends of an elastic bracket provides a force pointing towards the inside of the ear canal, which counteracts a loosening of the sensor. In particular, however, the fact that a sensor is inserted into each of the two ears makes the probability that both sensors are misaligned less likely, even if one sensor does not function properly, the measured value output is not influenced, since the larger measured value Value is displayed.
Da erfindungsgemäß weiter der höchste der über einen bestimmten Zeitraum gemessenen Werte ermittelt, und angezeigt wird, beeinflussen kurzfristige Fehlausrichtungen auch beider Infrarot-Temperatursensoren das Messergebnis nicht. Bei dem bestimmten Zeitraum sollte es sich um ein zeitlich gleitendes Fenster handeln. Since, according to the invention, the highest of the values measured over a certain period of time is also determined and displayed, short-term misalignments also of both infrared temperature sensors do not influence the measurement result. The specific time period should be a sliding window.

Claims

Patentansprüche claims
1. frarot-Ohrthermometer mit einer in den Gehörgang des Patienten einzuführenden und auf das Trommelfell auszurichtenden mfrarot-Sensoreh heit und einer mit einem Display versehenen Auswerteinheit, gekennzeichnet durch die Ausbildung nach Art eines Stethoskops mit einem elastischen Bügel, an dessen beiden Enden jeweils eine Infrarot-Sensoreinheit angeordnet ist, wobei beide Sensoreinheiten auf die Auswerteeinheit wirken und die Auswerteinheit den höchsten der von den beiden Sensoreinheiten während eines bestimmten Zeitraums gemessenen Wert ermittelt.1. infrared ear thermometer with a mfrarot sensor unit to be inserted into the patient's ear canal and aligned with the eardrum and an evaluation unit provided with a display, characterized by a stethoscope-like design with an elastic bracket, with an infrared at each end - Sensor unit is arranged, wherein both sensor units act on the evaluation unit and the evaluation unit determines the highest value measured by the two sensor units during a certain period of time.
2. Infrarot-Ohrthermometer nach Anspruch 1, dadurch gekennzeichnet, dass die Infrarot-Sensoreinheiten in olivenförmige Träger eingesetzt sind.2. Infrared ear thermometer according to claim 1, characterized in that the infrared sensor units are used in olive-shaped carriers.
3. frifrarot-Ohrthermometer nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Alarmeinheit mit einer Einrichtung zum Einstellen wenigstens eines Alarmwerts versehen ist.3. infrared infrared ear thermometer according to claim 1 or 2, characterized in that the alarm unit is provided with a device for setting at least one alarm value.
4. Infrarot-Ohrhermometer, dadurch gekennzeichnet, dass die Alarmeinheit mit einer Einrichtung zum Einstellen eines Temperaturgradienten versehen ist. 4. Infrared ear thermometer, characterized in that the alarm unit is provided with a device for setting a temperature gradient.
PCT/DE2003/001829 2002-06-12 2003-06-04 Infrared ear thermometer WO2003106947A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20209164.3 2002-06-12
DE20209164U DE20209164U1 (en) 2002-06-12 2002-06-12 Infrared ear thermometer

Publications (1)

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WO2003106947A1 true WO2003106947A1 (en) 2003-12-24

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5638453A (en) * 1996-01-29 1997-06-10 Mclaughlin; Bruce E. Transducer enhanced stethoscope
US5673692A (en) * 1995-02-03 1997-10-07 Biosignals Ltd. Co. Single site, multi-variable patient monitor
US6002777A (en) * 1995-07-21 1999-12-14 Stethtech Corporation Electronic stethoscope

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5673692A (en) * 1995-02-03 1997-10-07 Biosignals Ltd. Co. Single site, multi-variable patient monitor
US6002777A (en) * 1995-07-21 1999-12-14 Stethtech Corporation Electronic stethoscope
US5638453A (en) * 1996-01-29 1997-06-10 Mclaughlin; Bruce E. Transducer enhanced stethoscope

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
FISHMAN G ET AL: "IMPROVED TYMPANIC THERMOMETER BASED ON A FIBEROPTIC INFRARED RADIOMETER AND AN OTOSCOPE AND ITS USE AS A NEW DIAGNOSTIC TOOL FORACUTE OTITIS MEDIA", PROCEEDINGS OF THE SPIE, SPIE, BELLINGHAM, VA, US, vol. 3590, January 1999 (1999-01-01), pages 278 - 286, XP000989792 *

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