WO2022020874A1 - Système et procédé de détection de qualité de sommeil - Google Patents

Système et procédé de détection de qualité de sommeil Download PDF

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Publication number
WO2022020874A1
WO2022020874A1 PCT/AT2021/060263 AT2021060263W WO2022020874A1 WO 2022020874 A1 WO2022020874 A1 WO 2022020874A1 AT 2021060263 W AT2021060263 W AT 2021060263W WO 2022020874 A1 WO2022020874 A1 WO 2022020874A1
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WO
WIPO (PCT)
Prior art keywords
sensor
mattress
sleep
sleeping mattress
sensor system
Prior art date
Application number
PCT/AT2021/060263
Other languages
German (de)
English (en)
Inventor
Hans L. Malzl
Alexander MALZL
Andreas MALZL
Johannes MALZL
Meinhard Schwaiger
Original Assignee
Malzl Hans L
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 Malzl Hans L filed Critical Malzl Hans L
Publication of WO2022020874A1 publication Critical patent/WO2022020874A1/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
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
    • A61B5/6892—Mats
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/0205—Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition
    • A61B5/02055—Simultaneously evaluating both cardiovascular condition and temperature
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A61B5/02444—Details of sensor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
    • A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
    • A61B5/1102—Ballistocardiography
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4806—Sleep evaluation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4806—Sleep evaluation
    • A61B5/4809—Sleep detection, i.e. determining whether a subject is asleep or not
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4806—Sleep evaluation
    • A61B5/4812—Detecting sleep stages or cycles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4806—Sleep evaluation
    • A61B5/4815—Sleep quality
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4806—Sleep evaluation
    • A61B5/4818—Sleep apnoea
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2503/00—Evaluating a particular growth phase or type of persons or animals
    • A61B2503/12—Healthy persons not otherwise provided for, e.g. subjects of a marketing survey
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/74—Details of notification to user or communication with user or patient ; user input means

Definitions

  • the invention relates to a system for recording the quality of sleep with a sleeping mattress, wherein at least one sensor system arranged in the sleeping mattress is provided with at least one sensor, and at least one evaluation unit can be connected to the at least one sensor system, and a method for recording the quality of sleep.
  • US 2016/213 539 A1, KR 2017-0065853 A and CN 206 979 212 U show systems that are based on measuring the mattress climate, such as temperature and humidity.
  • Systems are disclosed in CN 106 175 263 A or CN 104 019 529 A which are based on the measurement of environmental parameters such as air pressure, room temperature, light and air conditions.
  • CN 205 306 506 U discloses systems in which the sleep state is detected using an infrared detector.
  • CN 106 333 691 A discloses a system that can be worn on the body and uses 3D acceleration sensors to measure movement data of the sleeping person.
  • a medical sleeping mattress with inflatable chambers is known from EP 2 664 315 A1, which uses a gyroscopic device to measure the inclination of the head part of the sleeping mattress to control the pressure distribution in the inflatable chambers.
  • a disadvantage of the known systems for sleep monitoring is that the corresponding sensors are usually in direct physical contact, for example in the form of electrodes applied to the skin, or sensors to be worn directly on the body, for example in the form of sensors integrated into bracelets or smart watches , which affects sleeping comfort.
  • the sensors are located underneath the sleeping mattress between the sleeping mattress and the bed frame, so that the sensors only record a fraction of the parameters required for the most meaningful sleep monitoring possible.
  • the measured values obtained are falsified, so that the results deviate greatly from reality and only insufficient measured values are available for the subsequent evaluation and sleep analysis.
  • the systems described in the prior art usually only detect individual ones
  • Parameters such as movement data or heart rate or respiration rate or body temperature with the help of one or more measuring sensors arranged in a linear or matrix-like manner.
  • Such systems have become known, for example, in WO 2011/094448 A1 or DE 10 2013 210 164 A1.
  • the arrangement and maintenance of these numerous sensors, which are usually embedded in the sleeping mattress, is space-consuming and costly.
  • the individual sensors must be synchronized with one another in order to avoid phase shifts and/or drifting of individual measured values, which would impair the evaluation quality and lead to misinterpretations.
  • the at least one sensor system has an acceleration sensor arranged inside the sleeping mattress, which is set up to detect the acceleration caused by the heartbeat and/or breathing and/or by movements of a person on the Sleeping mattress lying person to capture generated acceleration signals sen.
  • the sleep state of a person lying on the sleeping mattress is monitored by means of the sensor system integrated in the sleeping mattress in such a way that the sleeping person generates significantly different vibration or movement patterns which are transmitted to the sleeping mattress and measured by the sensor system according to the invention.
  • the beating heart thus generates an oscillation that can be measured directly as a vibration by the at least one acceleration sensor.
  • the senor is designed as an inertial measurement unit with a 3DoF sensor, a 6DoF sensor or a 9DoF sensor.
  • An inertial measurement unit is a spatial combination of several inertial sensors such as acceleration sensors and angular rate sensors. Devices of this type are usually used in aircraft and rockets for flight navigation and in robotics for motion detection. Particularly space-saving IMUs are used in aircraft models.
  • Disease-related deviations such as sleep apnea as a result of respiratory arrest, hypoventilation or snoring, can also be recorded particularly well and recorded for subsequent evaluations.
  • the IMU has a 9DoF sensor, which, in addition to the six degrees of freedom described above, namely the linear acceleration measurement along the three spatial axes and the determination of the rotation rate about these three spatial axes, also determines the magnetic field strength of the earth's magnetic field along the three spatial axes possible.
  • This additional measurement of the change in magnetic field strength as a result of a change in the orientation of the magnetic field sensor relative to the earth's magnetic field allows the sensor system according to the invention to determine the exact position within the sleeping mattress, which changes due to the movement of the body on the sleeping mattress.
  • Another vibration pattern is created by breathing, during which the chest of the person lying on the sleeping mattress periodically expands and contracts again, whereby the breathing creates a vibration pattern that is clearly distinguishable from the heart rate and blood flow due to the much higher mass of the upper body.
  • Another vibration pattern is created by the body movements that are carried out by the person consciously or unconsciously during sleep, and which can lead to a change in lying position, a change in the center of gravity, movement of the extremities or similar.
  • there is a change in the sinking profile in the sleeping mattress which can be measured using the sensor combination of an acceleration sensor and a yaw rate sensor.
  • the sleeping time can also be delimited, because the occupancy of the sleeping mattress or its leaving can be measured very precisely by the sensors used.
  • the at least one sensor system is preferably arranged within the sleeping mattress in the area of the upper body of a person lying on the sleeping mattress.
  • the at least one sensor system has at least one additional sensor, which is preferably selected from a group that includes temperature sensors, humidity sensors, noise sensors, air quality sensors and /or contains light sensors.
  • Temperature sensors and moisture sensors also arranged in the sleeping mattress are used in particular to record other physiological parameters of the person lying on the sleeping mattress. These can be an integral part of the sensor system or arranged as an independent sensor group in the sleeping mattress.
  • sensors arranged outside the sleeping mattress such as temperature sensors, humidity sensors, noise sensors, air quality sensors and/or light sensors, can be connected to the sensor system according to the invention, which in particular allows conclusions to be drawn about the influence of room climate, lighting conditions and/or Background noise on sleep quality allowed.
  • the sleeping mattress is designed as a test mattress in which the at least one sensor system is arranged.
  • this test mattress which preferably has the different sensors described above, a selection can be made for a sleeping mattress that is individually adapted to the needs of the person being tested.
  • the object is achieved by a method for detecting the sleep quality, wherein at least one sensor system is provided which has at least one acceleration sensor with which the heart rate and/or breathing rate and/or movements of a person lying on the sleeping mattress are measured in a second step, the measured values obtained are processed in at least one evaluation unit using mathematical methods, and in a third step, the course of sleep is assessed qualitatively and quantitatively on the basis of the processed measured values.
  • the measurement signals obtained are evaluated in the evaluation unit, usually an integrated processor unit or an external computer system.
  • the sensor system according to the invention works with a resolution between 100 Hz and 10,000 Hz in order to obtain the desired information about respiration, heartbeat and/or (Micro)movements of the person on the sleeping mattress with the necessary precision. Provision is preferably made here for the at least one sensor system to transmit the measured values to the at least one evaluation unit at predefined time intervals, preferably at time intervals of between 1 minute and 15 minutes, particularly preferably at time intervals of between 2 minutes and 5 minutes.
  • the successively measured values in particular the measured frequencies and amplitudes of the various vibrations caused by heartbeat, blood flow, respiration and/or movement, are analyzed in the evaluation unit at defined time intervals, with the chronological sequence changing parameters such as heart rate, breathing rate and movement pattern preferably a sleep phase model is created.
  • the sleep is summarized from the measured values determined and the sleep phase model by means of one or more easily interpretable characteristic values.
  • sleep fragmentation and anomalies such as respiratory arrest, snoring and possibly also cardiac arrhythmias can be made visible and chronologically assignable.
  • a further embodiment of the invention provides that mathematical filters, such as Kalmann filters or low-pass filters, are used when evaluating the measurement results.
  • a significant advantage of the method according to the invention lies in particular in the fact that the sleep quality is monitored over a longer period of time without the person concerned having to intervene, for example by attaching sensors to their body, etc.
  • recommendations for improving the quality of sleep are output, preferably automatically, on the basis of the results determined. These recommendations relate to measures such as time recommendations with regard to the beginning of bed rest, the duration of sleep or the time of waking up, or the change in environmental conditions, in particular the room climate or the lighting conditions in the immediate vicinity of the sleeping furniture.
  • the measures can also affect the sleeping furniture itself.
  • recommendations for adjusting the sleeping mattress are issued and/or the adjustments to the sleeping mattress are automated, in particular with regard to their hardness and/or the hardness zone distribution in the sleeping mattress.
  • the determined current measured values are compared with historical measured values and/or with theoretical and empirical values from a database that may be stored in the evaluation unit.
  • the recommendations determined in this way can relate to a large number of individual measures, such as time recommendations for starting bed rest, the duration of sleep or the time of waking up, or information of a general nature such as general recommendations for healthy and restful sleep. Warnings can also be issued for detected anomalies such as respiratory arrest or snoring or muscle twitching.
  • the system according to the invention or the method according to the invention can also be used in particular when selecting a sleeping mattress that is optimally adapted to the individual needs of the person.
  • the sensor system according to the invention is accommodated within a sleeping mattress acting as a test mattress, the hardness or hardness distribution of the test mattress being adaptable as required in a manner known per se, for example by means of compressed air or exchangeable foam inserts. By evaluating the measurement signals obtained depending on the configuration of the test mattress, it is possible to select an optimal sleeping mattress.
  • FIG. 1 shows a schematic representation of the system according to the invention for monitoring the quality of sleep
  • a system according to the invention for monitoring the quality of sleep 1000 wherein a piece of sleeping furniture 100 is provided, on which a sleeping mattress 110 is arranged.
  • a sensor system 200 is arranged in that area of the sleeping mattress 110 below its lying surface on which the upper body of a person located on the sleeping mattress 110 usually rests.
  • the sensor system 200 is equipped with a 6DoF sensor 210; alternatively, 3DoF sensors or 9DoF sensors are also used.
  • a 6DoF sensor allows acceleration measurements along the three spatial axes X, Y, Z and a yaw rate measurement ac, a y , a z around each of these three spatial axes, i.e. measurements along six degrees of freedom.
  • the sensor system 200 is equipped with further sensors for recording measured values, in particular the temperature, the humidity and/or the light conditions (not shown).
  • a person resting on the sleeping mattress 110 generates typical vibration patterns that are detected by the 6DoF sensor 210 of the sensor system 200 .
  • the heartbeat of the person generates a pulsating movement of blood in the body, with the 6DoF sensor 210 of the sensor system 200 detecting the heartbeat on the one hand and this pulsating blood flow along the body axis of the person on the sleeping mattress 110 on the other hand as an independent oscillation with an associated frequency and Acceleration amplitude recorded.
  • Due to the rhythmic expansion and contraction of the chest, breathing also generates a second oscillation pattern that can be distinguished from the heart rhythm and is also detected using the 6DoF sensor 210 .
  • the position or posture of the person on the sleeping mattress 110 generates another different vibration pattern, which in turn is detected by the 6DoF sensor 210 sensor system 200 by measuring acceleration or measuring the yaw rate.
  • a change in the lying position of the person on the sleeping mattress causes a change in the position and orientation of the sensor system 200 within the sleeping mattress 210 and thus relative to the earth's magnetic field, which can be measured via an additional sensor for measuring the magnetic field strength, such as contained, for example, in a 9DoF sensor.
  • the measured values determined by the sensor system 200 are usually recorded and/or evaluated and displayed in a data processing system (not shown).
  • FIG. 2 shows a typical signal recording 300 of the sensor system 200 according to the invention in the form of a diagram whose y-axis shows a large number of parameters as a function of time (x-axis).
  • the temperature, the earth's magnetic field, the linear acceleration in the three spatial axes, the rotational speed, etc. can be read off.
  • the oscillation curves 301 recorded in the area labeled "Linear Acceleration” show the heartbeat, with its effect on the 6DoF sensor 210 in the three spatial directions X, Y, Z, while in the field labeled "Gravity Factor" the associated oscillation curves 302 are shown for the respiratory rate.
  • the respiratory interval 302A can be determined from the recorded oscillation curves 302 for the respiratory rate.
  • a so-called hypnogram 400 (FIG. 3) is created, in which a sleep phase profile 410 is displayed on the basis of the received signals or oscillation patterns by conversion using mathematical algorithms.
  • the duration of the individual sleep phases for example the waking phase 411, the dream phase (REM phase) 412, the light sleep phase 413 and the deep sleep phase 414, can be taken from this hypnogram 400.
  • the individual sleep phases are evaluated as curves 415 to represent the individual sleep cycles.
  • any body movement or body activity 416 over the duration of sleep can also be taken from this hypnogram 400 .
  • the signal recording 300 or the hypnogram 400 allows the sleep quality of the person on the sleeping mattress 210 to be assessed and can be used as proof of any pathological changes, such as sleep apnea, cardiac arrhythmias, etc.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cardiology (AREA)
  • Physiology (AREA)
  • Anesthesiology (AREA)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Pulmonology (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

L'invention se rapporte à un système (1000) de détection de la qualité du sommeil à l'aide d'un matelas de couchage (110). Au moins un système de capteurs (200) agencé dans le matelas de couchage (110) est pourvu d'au moins un capteur, et au moins une unité d'analyse peut être connectée au(x) système(s) de capteurs (200). Le ou les systèmes de capteurs (200) comprennent un capteur d'accélération agencé à l'intérieur du matelas de couchage (110), ledit capteur d'accélération étant configuré pour détecter les signaux d'accélération générés par le rythme cardiaque et/ou la respiration et/ou les mouvements d'une personne couchée sur le matelas de couchage (110). L'invention se rapporte également à un procédé à cet effet.
PCT/AT2021/060263 2020-07-30 2021-07-30 Système et procédé de détection de qualité de sommeil WO2022020874A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50646/2020A AT524069A1 (de) 2020-07-30 2020-07-30 System und verfahren zur erfassung der schlafqualität
ATA50646/2020 2020-07-30

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WO2022020874A1 true WO2022020874A1 (fr) 2022-02-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114680860A (zh) * 2022-03-31 2022-07-01 慕思健康睡眠股份有限公司 一种生理体征监测系统及方法

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