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WO1997018753A1 - Spirometre electronique - Google Patents

Spirometre electronique Download PDF

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Publication number
WO1997018753A1
WO1997018753A1 PCT/IL1996/000154 IL9600154W WO9718753A1 WO 1997018753 A1 WO1997018753 A1 WO 1997018753A1 IL 9600154 W IL9600154 W IL 9600154W WO 9718753 A1 WO9718753 A1 WO 9718753A1
Authority
WO
WIPO (PCT)
Prior art keywords
patient
measurements
data
memory
calculating
Prior art date
Application number
PCT/IL1996/000154
Other languages
English (en)
Inventor
Shimon Dotan
Original Assignee
Tius Elcon Ltd.
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 Tius Elcon Ltd. filed Critical Tius Elcon Ltd.
Priority to AU75043/96A priority Critical patent/AU7504396A/en
Publication of WO1997018753A1 publication Critical patent/WO1997018753A1/fr

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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
    • A61B5/41—Detecting, measuring or recording for evaluating the immune or lymphatic systems
    • A61B5/411—Detecting or monitoring allergy or intolerance reactions to an allergenic agent or substance
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Measuring devices for evaluating the respiratory organs
    • A61B5/087—Measuring breath flow
    • A61B5/0871—Peak expiratory flowmeters

Definitions

  • the invention relates to a portable electronic device, based on exhaled peak flow air measurement for home asthma monitoring and management.
  • the correct management of asthma is ensured when careful attention is given to the individual patient's pulmonary function and selected information from the medical history, physical examination and laboratory test results. It is important to recognize that patients with asthma are heterogeneous and the condition varies widely from patient to patient, as well as for each patient over periods of time.
  • the clinician needs to create an individualized ongoing data base that helps assess the degree of severity of the patient's asthma, identify etiologic and aggravating factors and plan an appropriate course of therapy.
  • PEFR peak expiratory flow rate
  • FEV1 forced expiratory volume in 1 second
  • Portable mechanical peak flow meters are inexpensive, simple to use and easy for patients to understand.
  • the National Institute of Health, USA recommends that clinicians consider using home PEFR measurements to monitor the course of asthma and response to therapy in patients over 5 years old with moderate to severe asthma.
  • the clinician's ability to provide effective treatment is improved.
  • Daily monitoring of PEFR helps, for example, in detecting early stages of airway obstruction; assessing circadian variations of lung function, providing objective criteria in planning, initiating or terminating treatment; facilitating communication between patient and clinician; and investigating specific allergens or school or workplace exposures Ihat may exacerbate symptoms.
  • the invention provides an electronic instrument that makes it possible to automatically measure and collect data on the patient condition, calculate and indicate to the patient and physician his medical condition and, if needed, to indicate the recommended dosage of medications.
  • the electronic device includes a peak flow sensor and microprocessor control unit with keyboard and display.
  • the present invention relates to a portable electronic system, for exhaled peak flow air measurements, for home asthma management, comprising air flow sensing means, microprocessor control means to perform calculations of measured data, means for storing measured results and means for calculating the best measured result over a period of time, means for recording a base figure, and for displaying results on an indicator with a traffic light type or any other indicator, means to indicate the gradient level of measurements, compared with previous measurements stored in the memory means and means to display results on a LCD in quantitive figures, such as liters per second and percentages.
  • it contains means for calculating differences between morning and evening "best performance" of measurements, means for storing results of calculations in memory and means for indicating on an indication system variability by percentage translated into graphic icon indicators, indicating normal or unsatisfactory condition of the patient.
  • a preferred embodiment comprises automatic calculating means for calculating the patient's condition by current measurement data, personal best measurement stored in memory and current variability calculation means to display the result on a color zone traffic light indicator and also variability icon indication means, which can be preset to default values which may be changed and reset by the physician according to a patient's condition.
  • the invention further relates to a method for electronically measuring the exhaled peak flow air measurement of a patient which comprises establishing basic comparative parameters of a patient by establishing best measured results in the evening and in the morning, calculating the ratio between these, storing these in memory means, such measurements being based on a number of days, and subsequently using these data for establishing the real time condition of the patient by effecting such measurements on a day the patient does not feel well, and comparing the data on such day with the base values, indicating the status of the patient.
  • the resulting data are displayed on a "good” or "bad " indicator, or on a color display similar to colors of a traffic light, different colors indicating the status of the patient.
  • the present invention overcomes this to a large extent, as there is provided a rather inexpensive electronic instrument, with a wide range of capabilities, of high accuracy and with many automatic settings, memory, etc.
  • One of the principles of the measurements of the invention is that one reading is taken in the evening, which gives a relatively high value, and another in the morning, which gives a lower value.
  • the ratio between these is generally lower than 1 , and often in the 0.9 range.
  • the ratio is substantially lower than 0.9, this is indicative of a rather poor state of the health of the patient.
  • PEFR Planar Biharmonic Activated Fidelity
  • This personal "best value” will be the standard against which subsequent measurements are evaluated by the patient and clinician.
  • Personal best values can be established during an initial period in which the patient records PEFR values at least twice a day.
  • the device indicates a patient's values as colored PEFR zones similar to traffic lights. The zones can be established as a function of the patient's personal best. It is recommended that daily measurements for establishing the personai best be made at least for a few days in the morning and evening. If the patient takes an inhaled medication, PEFR should be measured both before and after treatment.
  • Green - 80 to 100 percent of personal best
  • Yellow - (65 to 80 percent of personal best) signals caution. An exacerbation may be present and a temporary increase in medication may be indicated. Alternatively, the overall asthma may not be under sufficient control and maintenance therapy may need to be increased.
  • Red - (below 50 percent of personal best) signals a medical alert.
  • An immediate bronchodialator should be taken and the clinician should be notified if PEFR measurements do not return immediately and stay in yellow or green zones.
  • PEFR Peak Expiratory Flow Rate
  • Operation of the device is determined by pressing different combinations of the two keys: "BLOW” and " OPERATE”.
  • the Personal Best is the best performed of evening exhalation of air over a period of at least 3 days of measurement (i.e. maximum PEFR value of 3 mornings).
  • the device continues to check if the PEFR measurement has continued for at least 3 days, otherwise, the measuring process is repeated until a Personal Best has been established.
  • the PEFR Color Indicator function shows the comparitive result between the measured PEFR values and the Personal Best of PEFR.
  • Variability is defined as percentage of difference between evening and morning measurements of PEFR.
  • the LCD will display both the percentages and a graphic symbol indicating the variability of PEFR of that day.
  • Alarms can be switched “ON” or “OFF” by the user in the set mode.
  • Default alarm setting is “OFF” 3.1 " Make Measurement” alarm.
  • Necessary medicine dose depending on one of the medicine types stored in the memory in relation to the results of previous measurements or according to physician's instructions is displayed on the LCD of the device when this alarm sounds.
  • the device features an alarm clock with calendar having two independent settings of alarms with different sounds and indications:
  • Necessary medicine dose depending on one of the medicine types stored in the memory in relation to the results of previous measurements or according to physician's instructions is displayed on the LCD of the device when this alarm sounds.
  • the medicine type is selected by user in the "SET" mode as per his physician's recommendation.
  • the device is always in Standby Mode with Clock, Calendar and Alarms until the "Make Measurement” alarm or the "BLOW” key is activated.
  • the PEFR and FEV1 value digits flash simultaneously, prompting the patient to stop the measurements.
  • MORNING is defined as first measurement on that day (basically 7AM) 6.1.1 LCD displays PEFR and FEV1 readings.
  • 6.2 EVENING is defined as the evening measurement on that day (basically 5PM) in case of 2 measurements per day or as the nearest measurement to (MORNING + 8 hours), in case of more than 2 measurements per day.
  • 6.2.2 Device calculates the Variability of that day, and displays the reading: If Variability ⁇ 20%, then a Happy Face is displayed.
  • the PEFR Color Indicator will compare the measured PEFR with the Personal Best and indicate one of the following colors: Green - 80% to 100% of PB - "OK” Yellow - 65% to 80% of PB - "CAUTION” Orange - 50% to 65% of PB - "WARNING! Red - below 50% of PB - "DANGER! 7.2 After the color indication, the meter repeats its 1 minutes timing again. If no action is taken during this time it returns to the Standby Mode.
  • PB Personal Best
  • Fig. 1 is a block diagram of one embodiment of the instrument
  • Fig. 2 is a block diagram of the electronic circuitry of the instrument
  • Fig. 3 is a drawing of the LCD display of the instrument
  • Fig. 4 is a drawing of an optional enhanced device including duplex communication capabilities and a number of preset questions to be answered by the patient to a number of preset answers by scoring ranges.
  • the novel device comprises an air flow sensor 1 , integrated to the instrument's body frame.
  • the air flow sensor can be of any type such as winding propeller, sensor based on measuring the differences of temperatures between input and output, air pressure sensor etc.
  • Fig.1 and Fig. 2 show the sensor based on the measurement of winding propeller velocity.
  • the instrument 2 comprises an LCD display 3 and keyboard 4, and the required number of keys for manual control of the device.
  • On the LCD are placed the color labels for Traffic Light indication, where :
  • the components of the instrument are set out in Fig. 2 and comprise the air flow sensor 9, with spinning propeller 10, sensor of velocity RPM (rate of rev. per minite) of the propeller 12 connected to the amplifier 13.
  • RPM rate of rev. per minite
  • the propeller 10 spins, and changes the output signal of the propeller velocity sensor 12.
  • Signal of the propeller velocity sensor 12 is amplified by amplifier 13, passes via microprocessor control unit 14 to an LCD display 16 and to memory 17.
  • the microprocessor control unit 14 is in charge of all the automatic functions of the device, such as measurement, calculations, storing in the memory, automatic activation of alarms and displays.
  • the keyboard 15 is used for initialization of the instrument, activates the instrument to the measurement mode and switches the instrument to other modes.
  • the additional communication units 18 and 18' comprises a transmitter/receiver unit 19 and transmitter/receiver 20 of the remote unit, used for communication between instrument and remote unit via infra-red, RF, cable, or any other type of connection.
  • Fig. 4 shows the enhanced device where 22 is the communication unit and 21 is the message display unit.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physiology (AREA)
  • Pulmonology (AREA)
  • Immunology (AREA)
  • Vascular Medicine (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)

Abstract

L'invention se rapporte à un spiromètre électronique portable (2) indiquant en temps réel l'état de santé d'un patient présentant des problèmes respiratoires. Le dispositif comprend un détecteur d'écoulement d'air (1), une commande (14) de microprocesseur permettant d'effectuer les calculs des données mesurées, une mémoire , un dispositif servant à calculer le meilleur résultat mesuré sur une période, un dispositif servant à établir un chiffre de base, et à afficher les résultats et indiquer le niveau de gradient des mesures comparé aux données mesurées précédentes mises en mémoire, et un dispositif destiné à afficher les résultats (3). L'invention se rapporte également à un procédé de mesure électronique du débit de pointe de l'air exhalé d'un patient, ce procédé consistant à établir des paramètres comparatifs de base d'un patient en enregistrant les résultats matin et soir, à calculer le rapport entre ces résultats, à les mettre en mémoire et à utiliser ces données pour établir l'état d'un patient au moyen de ces mesures effectuées sur une journée où le patient n'est pas en bonne condition.
PCT/IL1996/000154 1995-11-21 1996-11-18 Spirometre electronique WO1997018753A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU75043/96A AU7504396A (en) 1995-11-21 1996-11-18 Electronic spirometer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL11607795A IL116077A0 (en) 1995-11-21 1995-11-21 Electronic spirometer
IL116077 1995-11-21

Publications (1)

Publication Number Publication Date
WO1997018753A1 true WO1997018753A1 (fr) 1997-05-29

Family

ID=11068210

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL1996/000154 WO1997018753A1 (fr) 1995-11-21 1996-11-18 Spirometre electronique

Country Status (3)

Country Link
AU (1) AU7504396A (fr)
IL (1) IL116077A0 (fr)
WO (1) WO1997018753A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003053243A1 (fr) * 2001-11-05 2003-07-03 Servei D'ajut Respiratori, S.L. Multispirometre et procede destines a mesurer la fonction ventilatoire par spirometrie
WO2004043254A1 (fr) * 2002-11-14 2004-05-27 Nutren Technology Limited Dispositif et procede de surveillance respiratoire
WO2006102086A1 (fr) * 2005-03-17 2006-09-28 Coifman Robert E Appareil et procede pour debitmetres de pointe electroniques intelligents
WO2007012818A1 (fr) * 2005-07-29 2007-02-01 Nutren Technology Limited Ameliorations concernant la mesure de respiration
WO2007122653A1 (fr) * 2006-04-26 2007-11-01 Mir Srl Medical International Research Procede d'incitation pour test de spirometrie avec un systeme de commande universel quelque soit l'image de stimulation choisie
EP1573450A4 (fr) * 2002-05-13 2008-03-26 Scott Lab Inc Systeme et methode de detection transparente precoce, d'avertissement et d'intervention au cours d'une procedure medicale
WO2008093263A3 (fr) * 2007-01-30 2008-10-16 Koninkl Philips Electronics Nv Dispositif d'analyse d'haleine
WO2009144628A1 (fr) * 2008-05-28 2009-12-03 Koninklijke Philips Electronics N.V. Système de détermination d’un dosage médicamenteux dans le cas de troubles des voies respiratoires
RU2401062C1 (ru) * 2009-01-27 2010-10-10 Владимир Николаевич Абросимов Портативная телеметрическая система регистрации параметров внешнего дыхания спортсмена в реальном времени и дыхательная трубка пловца для ее осуществления
CN104093356A (zh) * 2011-11-03 2014-10-08 Pmd医疗保健公司 个人肺活量计
EP3261536A4 (fr) * 2015-02-27 2018-10-17 12th Man Technologies, Inc. Système et procédé de spirométrie avec assistance numérique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058601A (en) * 1988-02-10 1991-10-22 Sherwood Medical Company Pulmonary function tester
US5137026A (en) * 1990-01-04 1992-08-11 Glaxo Australia Pty., Ltd. Personal spirometer
US5277195A (en) * 1992-02-03 1994-01-11 Dura Pharmaceuticals, Inc. Portable spirometer
US5373851A (en) * 1993-04-19 1994-12-20 Brunswick Biomedical Corporation Specialized peak flow meter
US5501231A (en) * 1993-06-02 1996-03-26 Kaish; Norman Patient operated system for testing and recording a biological condition of the patient
US5518002A (en) * 1993-10-22 1996-05-21 Medtrac Technologies, Inc. Portable electronic spirometric device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5058601A (en) * 1988-02-10 1991-10-22 Sherwood Medical Company Pulmonary function tester
US5137026A (en) * 1990-01-04 1992-08-11 Glaxo Australia Pty., Ltd. Personal spirometer
US5277195A (en) * 1992-02-03 1994-01-11 Dura Pharmaceuticals, Inc. Portable spirometer
US5373851A (en) * 1993-04-19 1994-12-20 Brunswick Biomedical Corporation Specialized peak flow meter
US5501231A (en) * 1993-06-02 1996-03-26 Kaish; Norman Patient operated system for testing and recording a biological condition of the patient
US5518002A (en) * 1993-10-22 1996-05-21 Medtrac Technologies, Inc. Portable electronic spirometric device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003053243A1 (fr) * 2001-11-05 2003-07-03 Servei D'ajut Respiratori, S.L. Multispirometre et procede destines a mesurer la fonction ventilatoire par spirometrie
US7291115B2 (en) 2001-11-05 2007-11-06 Health Solutions, S.L. Spirometer and method to measure the ventilatory function by spirometry
EP1573450A4 (fr) * 2002-05-13 2008-03-26 Scott Lab Inc Systeme et methode de detection transparente precoce, d'avertissement et d'intervention au cours d'une procedure medicale
AU2003280025B2 (en) * 2002-11-14 2007-01-04 Nutren Technology Limited Breath monitoring device and metod
WO2004043254A1 (fr) * 2002-11-14 2004-05-27 Nutren Technology Limited Dispositif et procede de surveillance respiratoire
WO2006102086A1 (fr) * 2005-03-17 2006-09-28 Coifman Robert E Appareil et procede pour debitmetres de pointe electroniques intelligents
US8034002B2 (en) 2005-03-17 2011-10-11 Coifman Robert E Apparatus and method for intelligent electronic peak flow meters
WO2007012818A1 (fr) * 2005-07-29 2007-02-01 Nutren Technology Limited Ameliorations concernant la mesure de respiration
WO2007122653A1 (fr) * 2006-04-26 2007-11-01 Mir Srl Medical International Research Procede d'incitation pour test de spirometrie avec un systeme de commande universel quelque soit l'image de stimulation choisie
WO2008093263A3 (fr) * 2007-01-30 2008-10-16 Koninkl Philips Electronics Nv Dispositif d'analyse d'haleine
WO2009144628A1 (fr) * 2008-05-28 2009-12-03 Koninklijke Philips Electronics N.V. Système de détermination d’un dosage médicamenteux dans le cas de troubles des voies respiratoires
RU2401062C1 (ru) * 2009-01-27 2010-10-10 Владимир Николаевич Абросимов Портативная телеметрическая система регистрации параметров внешнего дыхания спортсмена в реальном времени и дыхательная трубка пловца для ее осуществления
CN104093356A (zh) * 2011-11-03 2014-10-08 Pmd医疗保健公司 个人肺活量计
EP3261536A4 (fr) * 2015-02-27 2018-10-17 12th Man Technologies, Inc. Système et procédé de spirométrie avec assistance numérique

Also Published As

Publication number Publication date
IL116077A0 (en) 1996-01-31
AU7504396A (en) 1997-06-11

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