DE102007063008A1 - Method and device for cardiovascular and respiratory monitoring using hidden Markov models and neural networks - Google Patents
Method and device for cardiovascular and respiratory monitoring using hidden Markov models and neural networks Download PDFInfo
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- DE102007063008A1 DE102007063008A1 DE102007063008A DE102007063008A DE102007063008A1 DE 102007063008 A1 DE102007063008 A1 DE 102007063008A1 DE 102007063008 A DE102007063008 A DE 102007063008A DE 102007063008 A DE102007063008 A DE 102007063008A DE 102007063008 A1 DE102007063008 A1 DE 102007063008A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
- A61B7/003—Detecting lung or respiration noise
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- G—PHYSICS
- G16—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR SPECIFIC APPLICATION FIELDS
- G16H—HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR THE HANDLING OR PROCESSING OF MEDICAL OR HEALTHCARE DATA
- G16H50/00—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics
- G16H50/20—ICT specially adapted for medical diagnosis, medical simulation or medical data mining; ICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for computer-aided diagnosis, e.g. based on medical expert systems
-
- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/7264—Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems
- A61B5/7267—Classification of physiological signals or data, e.g. using neural networks, statistical classifiers, expert systems or fuzzy systems involving training the classification device
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Primary Health Care (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Databases & Information Systems (AREA)
- Pulmonology (AREA)
- Data Mining & Analysis (AREA)
- Heart & Thoracic Surgery (AREA)
- Epidemiology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum Herz-, Kreislauf- und Atmungsmonitoring mittels Hidden Markov Modellen und Neuronalen Netzwerken. Mittels einem einfachen akustischen Sensorsystem, am Beispiel eines Körperschall-Mikrofons, werden Herz-, Atem- und Strömungsgeräusche im Brustkorbbereich eines Patienten aufgezeichnet und mittels eines Analog-Digital-Wandlers in einem PC digitalisiert. Basierend auf Methoden der Signalverarbeitung und der künstlichen Intelligenz, wie Hidden Markov Modellen und Neuronalen Netzwerken, wird anschließend eine lernfähige Software so trainiert, dass einerseits pathologische und nichtpathologische Geräuschklassen erkannt werden und andererseits aufgrund einer darauffolgenden statistischen Auswertung zu Krankheitsbildern, z.B. Herzrhythmusstörungen, Kreislaufstörungen oder Atemwegserkrankungen, zugeordnet werden.The invention relates to a method and a device for cardiovascular and respiratory monitoring by means of hidden Markov models and neural networks. By means of a simple acoustic sensor system, using the example of a structure-borne sound microphone, cardiac, respiratory and flow noises are recorded in the chest region of a patient and digitized by means of an analog-to-digital converter in a PC. Based on methods of signal processing and artificial intelligence, such as Hidden Markov models and neural networks, a learning software is then trained so that on the one hand pathological and non-pathological noise classes are recognized and on the other hand, due to a subsequent statistical analysis of disease patterns, e.g. Cardiac arrhythmias, circulatory disorders or respiratory diseases.
Description
Heutzutage werden weltweit mehrere unterschiedliche Geräte zur Überwachung der Herzkreislauf und Atmungsfunktionalitäten eingesetzt. Diese Geräte werden klinisch vorwiegend in den zwei Gruppierungen Beatmungs- oder Atmungsmonitoringsysteme kategorisiert.nowadays There are several different monitoring devices worldwide the cardiovascular and respiratory functionalities used. These devices are clinically predominantly in the two groupings Respiratory or respiratory monitoring systems categorized.
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Bei langzeitbeatmeten Patienten werden meistens Geräte eingesetzt die über eine Vielzahl von biologischen Sensoren brauchen um ein zuverlässiges Monitoring der Patienten zu gewährleisten.at Long-term ventilated patients are mostly used devices that need a lot of biological sensors to ensure reliable monitoring of patients.
Eine ähnlich große Anzahl an Sensoren wird beispielsweise häufig gebraucht für eine zuverlässige Diagnose bzw. Monitoring von Herz-, Kreislauf bzw. Atemwegerkrankungen.A similar For example, a large number of sensors become common used for a reliable diagnosis or Monitoring cardiovascular and respiratory diseases.
So ergibt sich beispielsweise die Diagnose vom Schlaf-Apnoe-Syndrom hauptsächlich aus der Vorgeschichte, den Angaben zur Schlafhygiene, der Untersuchung beim Hausarzt und einer ambulanten Untersuchung bei dafür ausgebildeten Fachärzten.So For example, the diagnosis is the sleep apnea syndrome mainly from the previous history, the information on sleep hygiene, the examination at the family doctor and an outpatient examination with trained medical specialists.
Da eine komplexe Diagnose von Schlafstörungen in einem Schlaflabor sehr aufwendig und kostenintensiv ist, werden im Allgemeinen für die Vordiagnose zu Hause, mobile Screening-Geräte eingesetzt.There a complex diagnosis of sleep disorders in a sleep laboratory very elaborate and costly, are generally used for the pre-diagnosis at home, mobile screening devices used.
Die Untersuchung mit diesen Geräten erfolgt derzeit mittels einigen, bis zu über 10, Sensoren, die am Patienten während des Schlafes zu Hause angeschlossen werden, zur Aufzeichnung von Atemströmung, Atemgeräuschen, Hirnströme, Sauerstoffsättigung im Blut, Herzfrequenz, EKG, Atembewegung des Brustkorbes und des Abdomens sowie Körperlage.The Investigation with these devices is currently carried out by means of some, up to over 10, sensors attached to the patient during of sleep at home, to record from Respiratory flow, respiratory sounds, brain waves, Oxygen saturation in the blood, heart rate, ECG, respiratory movement of the Thorax and abdomen and body position.
Im Bereich der Neonatologie werden von den meistens Monitoringsystemen eine schnelle und zuverlässige Reaktionszeit erwartet. Aus aktuellen Studienergebnisse zur Prävention des „Plötzlichen Kindstod Syndroms" sind neben Auswertungen von Atemqualitäten auch die Auswertung des Zusammenhangs zwischen Apnoefrequenzen und Herzfrequenz so gut wie unabdingbar.in the The field of neonatology is made up of mostly monitoring systems expected a fast and reliable response time. From current study results for the prevention of "Sudden Infant Death Syndrome Syndrome "are besides evaluations of breathing qualities as well the evaluation of the relationship between apnea frequencies and heart rate almost indispensable.
Aufgabenstellungtask
Aufgrund der immer knapper werdenden Budgets in Kliniken, Arztpraxen sowie den meistens sonstigen gesundheitliche Einrichtungen, lautete die Fragestellung bei dieser Arbeit wie man „auch aus wirtschaftlichen Interesse" die Anzahl der Sensoren der aktuellen Screening-Systeme reduzieren kann, ohne Einbußen in der Qualität der Diagnose bzw. Patientenmonitoring von Herz-, Kreislauf- und Atemwegs-Erkrankungen zu erleiden.by virtue of the ever-shrinking budgets in clinics, doctors' offices as well as the most other health facilities, was the question in this work how to "also of economic interest" reduce the number of sensors of current screening systems can, without sacrificing the quality of the diagnosis or patient monitoring of cardiovascular and respiratory diseases to suffer.
Lösungsvorschlag und AusführungsbeispielSuggested solution and embodiment
Die erfindungsgemäße Lösung dieser Aufgabe wird wie folgt beschrieben:
- – Die Vorrichtung besitzt mindestens ein Mikrofonsystem, Ultraschallsystem oder ein ähnliches akustisches Sensorsystem zur kontinuierlichen Aufzeichnung von Herz-, Kreislauf- und Atmungsgeräuschen, sowie einen PC mit Auswertungssoftware.
- – In der Software wird dann zunächst ein Verfahren zur Signalvorverarbeitung und Gewinnung der Merkmale aus den aufgezeichneten Herz-, Kreislauf- und Atemgeräuschen eingesetzt, um die Daten anschließend auswerten zu können.
- – Ein Hybridsystem bestehend aus Hidden Markov Modellen, Neuronalen Netzen und einem wissensbasierten Automat identifiziert die aufgezeichneten Geräuschen und den Zeitpunkt ihres Auftretens.
- – Anschließend wird eine statistische Auswertung der chronologisch klassifizierten Herz-, Kreislaufströmungs- und Atemgeräuschen durchgeführt.
- – Mit Hilfe dieser Daten wird der Gesundheitszustand des Patienten ermittelt und eventuell ein Vorschlag zur Vorabdiagnose erstellt.
- - The device has at least one microphone system, ultrasound system or a similar acoustic sensor system for continuous recording of cardiac, circulatory and respiratory sounds, and a PC with evaluation software.
- The software then first uses a method for signal preprocessing and retrieval of the characteristics from the recorded heart, circulatory and respiratory sounds in order to subsequently evaluate the data.
- - A hybrid system consisting of hidden markov models, neural networks and a knowledge-based automaton identifies the recorded sounds and the time of their occurrence.
- - Subsequently, a statistical evaluation of chronologically classified cardiac, circulatory and respiratory sounds is performed.
- - With the help of this data, the health status of the patient is determined and possibly a proposal for the preliminary diagnosis is created.
Das Verfahren und die Vorrichtung werden durch folgende Zeichnungen näher erläutert:The The method and the device are described by the following drawings explained in more detail:
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 9200249 U1 [0002] - DE 9200249 U1 [0002]
- - DE 3444635 A1 [0003] - DE 3444635 A1 [0003]
Claims (11)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007063008A DE102007063008A1 (en) | 2007-12-21 | 2007-12-21 | Method and device for cardiovascular and respiratory monitoring using hidden Markov models and neural networks |
PCT/DE2008/002033 WO2009079976A2 (en) | 2007-12-21 | 2008-12-04 | Method and device for heart, cardiovascular and respiratory monitoring using hidden markov models and neuronal networks |
Applications Claiming Priority (1)
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DE102007063008A DE102007063008A1 (en) | 2007-12-21 | 2007-12-21 | Method and device for cardiovascular and respiratory monitoring using hidden Markov models and neural networks |
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DE102007063008A1 true DE102007063008A1 (en) | 2009-06-25 |
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DE102007063008A Withdrawn DE102007063008A1 (en) | 2007-12-21 | 2007-12-21 | Method and device for cardiovascular and respiratory monitoring using hidden Markov models and neural networks |
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DE (1) | DE102007063008A1 (en) |
WO (1) | WO2009079976A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110010112A1 (en) * | 1999-02-12 | 2011-01-13 | Pierre Bonnat | Method and System for Controlling a User Interface of a Device Using Human Breath |
DE102009037097A1 (en) | 2009-08-11 | 2011-02-17 | Kouemou, Guy Leonard, Dr. Ing. | Device for automatically monitoring respiration and ventilation of patient suffering from e.g. asthma, in hospital, has personal computer connected to sensor, and classification result fed to learning system for result confirmation |
FR2967273A1 (en) * | 2010-11-10 | 2012-05-11 | Commissariat Energie Atomique | SENSOR DETECTION DEVICE, DETECTION METHOD AND CORRESPONDING COMPUTER PROGRAM |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11240579B2 (en) | 2020-05-08 | 2022-02-01 | Level 42 Ai | Sensor systems and methods for characterizing health conditions |
CN114788709A (en) * | 2021-01-26 | 2022-07-26 | 上海微创数微医疗科技有限公司 | Method and device for denoising heart sound signal and storage medium |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3444635A1 (en) | 1984-12-07 | 1986-06-19 | Hugo Sachs Elektronik Kg, 7801 March | Apparatus for monitoring heart, respiration and circulation |
DE9200249U1 (en) | 1992-01-11 | 1992-04-16 | Klemm, Bernd, 7801 Umkirch | Device for monitoring and recording respiratory, cardiac and/or other vital functions |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0124568A1 (en) * | 1982-10-29 | 1984-11-14 | The London Hospital Medical College | Cardio-respiratory monitor apparatus & method |
US5638823A (en) * | 1995-08-28 | 1997-06-17 | Rutgers University | System and method for noninvasive detection of arterial stenosis |
US6572560B1 (en) * | 1999-09-29 | 2003-06-03 | Zargis Medical Corp. | Multi-modal cardiac diagnostic decision support system and method |
GB0118728D0 (en) * | 2001-07-31 | 2001-09-26 | Univ Belfast | Monitoring device |
US20060198533A1 (en) * | 2005-03-04 | 2006-09-07 | Wang Le Y | Method and system for continuous monitoring and diagnosis of body sounds |
-
2007
- 2007-12-21 DE DE102007063008A patent/DE102007063008A1/en not_active Withdrawn
-
2008
- 2008-12-04 WO PCT/DE2008/002033 patent/WO2009079976A2/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3444635A1 (en) | 1984-12-07 | 1986-06-19 | Hugo Sachs Elektronik Kg, 7801 March | Apparatus for monitoring heart, respiration and circulation |
DE9200249U1 (en) | 1992-01-11 | 1992-04-16 | Klemm, Bernd, 7801 Umkirch | Device for monitoring and recording respiratory, cardiac and/or other vital functions |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110010112A1 (en) * | 1999-02-12 | 2011-01-13 | Pierre Bonnat | Method and System for Controlling a User Interface of a Device Using Human Breath |
DE102009037097A1 (en) | 2009-08-11 | 2011-02-17 | Kouemou, Guy Leonard, Dr. Ing. | Device for automatically monitoring respiration and ventilation of patient suffering from e.g. asthma, in hospital, has personal computer connected to sensor, and classification result fed to learning system for result confirmation |
FR2967273A1 (en) * | 2010-11-10 | 2012-05-11 | Commissariat Energie Atomique | SENSOR DETECTION DEVICE, DETECTION METHOD AND CORRESPONDING COMPUTER PROGRAM |
WO2012062997A1 (en) * | 2010-11-10 | 2012-05-18 | Commissariat à l'énergie atomique et aux énergies alternatives | Sensor-based detection device, corresponding detection method and computer program |
US9235807B2 (en) | 2010-11-10 | 2016-01-12 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Sensor detection device, corresponding detection method and computer program |
Also Published As
Publication number | Publication date |
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WO2009079976A2 (en) | 2009-07-02 |
WO2009079976A3 (en) | 2009-11-26 |
WO2009079976A9 (en) | 2009-08-27 |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20110701 |