DE102011112226A1 - Multi-model multi-sensor device for contact-less detection and monitoring of physiological signals of resting or active working people, has sensors for simultaneous capacitive and optoelectronic detection of physiological signals - Google Patents
Multi-model multi-sensor device for contact-less detection and monitoring of physiological signals of resting or active working people, has sensors for simultaneous capacitive and optoelectronic detection of physiological signals Download PDFInfo
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Abstract
Description
Die Erfindung bezieht sich auf eine multimodale Sensorvorrichtung zur kontaktlosen, ortsselektiven Erfassung und Überwachung von wichtigen physiologischen Signalen des ruhenden oder aktiv tätigen Menschen gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a multimodal sensor device for contactless, location-selective detection and monitoring of important physiological signals of the person resting or actively acting according to the preamble of
Vor allem in Krankenhäusern auf Stationen niedriger bis mittlerer Überwachungsstufe, bei der Therapie chronisch Kranker (z. B. während der Dialyse) aber auch in der Betreuung von Patienten im häuslichen Umfeld (z. B. zur Detektion von Atemaussetzern und Stress bei Schlafapnoe oder bei Säuglingen mit unreifer Atmungsregulation), findet heutzutage nur eine intermittierende punktuelle bzw. gar keine Überwachung der Vitalparameter durch Personal oder Angehörige statt. Es gibt zwar Sensoren, die eine kontinuierliche Überwachung ermöglichen würden, allerdings benötigen diese immer eine mechanische und elektrisch leitfähige Fixierung am Patienten und sind mit störender Verkabelung verbunden. Zusätzlich können z. B. durch Klebelektroden Hautirritationen auftreten. Kontaktlose Messtechniken, die auf unterschiedlichen physikalischen Effekten beruhen, befinden sich momentan noch in der Entwicklung, wobei das größte Problem die erhöhte Sensitivität für Artefakte aufgrund der kontaktlosen Messtechnik ist. Diese Artefakte stellen aber, wenn sie als solche erkannt und z. B. als „bewegungsgestört” angezeigt würden, für viele Anwendungen kein grosses Problem dar, da es sich bei den skizzierten Anwendungsszenarien häufig nicht um Hoch-Risiko-Patienten handelt und Zeitabschnitte ohne brauchbare Messsignale tolerierbar wären, d. h. eine reduzierte Sensitivität bei sehr hoher Spezifität erscheint in diesen Fällen akzeptabel.Above all in hospitals at wards of low to medium monitoring level, in the treatment of chronically ill patients (eg during dialysis) but also in the care of patients in the home environment (eg for the detection of respiratory distress and stress in sleep apnea or Infants with immature respiratory regulation), there is nowadays only intermittent punctual or no monitoring of the vital parameters by personnel or relatives. Although there are sensors that would allow continuous monitoring, these always require a mechanical and electrically conductive fixation on the patient and are associated with disturbing cabling. In addition, z. B. occur through adhesive electrodes skin irritation. Contactless measurement techniques based on different physical effects are currently under development, with the biggest problem being the increased sensitivity to artifacts due to contactless measurement. These artifacts, however, if recognized as such and z. As "motion disordered" would be displayed, for many applications is not a major problem, since it is often in the sketched application scenarios are not high-risk patients and time intervals would be tolerable without useable measurement signals, d. H. a reduced sensitivity with very high specificity seems acceptable in these cases.
Die robuste, kontaktlose (d. h. es wird kein galvanischer Kontakt zur Haut benötigt) und automatische kontinuierliche Überwachung könnte eine Verschlechterung des Gesundheitszustandes auch auf Stationen niedriger Überwachungsstufe oder im häuslichen Umfeld frühzeitig detektieren, so dass rechtzeitig mit einer adäquaten Therapie reagiert und Folgekosten gesenkt werden können.Robust, non-contact (requiring no galvanic contact with the skin) and automatic continuous monitoring could detect health deterioration early on at low-level or home-care settings, allowing timely response to appropriate therapy and reduced follow-up costs.
In den letzten Dekaden sind eine ganze Reihe von Vorrichtungen zur nichtinvasiven Erfassung verschiedener Vitalparameter des Menschen entwickelt worden. Vorrichtungen, von denen bei der Formulierung des Oberbegriffs des Patentanspruchs 1 ausgegangen wird, sind beispielsweise in der beigefügten Literaturauswahl zum Stande der Technik oder aus den Patentschriften
Derzeitige in der Klinik eingesetzte Messtechniken zur Messung der Herzfrequenz (z. B. EKG, PPG) werden über Kabel und Elektroden mit dem Patienten verbunden. Damit sind diese Techniken zwar einfach und störungsarm zu realisieren, sind dafür aber mit häufigem Wechsel der Klebeelektroden verbunden, die Hautirritationen und Stress verursachen können. Dazu kommt eine Minderung der Bewegungsfreiheit durch die Kabel.Current heart rate measuring techniques used in the clinic (eg ECG, PPG) are connected to the patient via cables and electrodes. Although these techniques are simple and low-interference, they are associated with frequent changes in adhesive electrodes, which can cause skin irritation and stress. Added to this is a reduction in freedom of movement through the cables.
Eine Messtechnik zur kontaktfreien Ableitung des EKGs wurde bisher im klinischen Alltag noch nicht etabliert. Ähnlich verhält es sich mit der Temperaturmessung. Es gibt zwar nichtinvasive Oberflächentemperatursensoren zur Messung der Hauttemperatur, allerdings verfügen diese Sensoren nicht über eine Fehlererkennung, so dass z. B. die Messwerte eines Sensors, der den Kontakt zur Haut verloren hat, nicht als Artefakt bewertet wird.A measuring technique for the non-contact derivation of the ECG has not yet been established in clinical practice. The situation is similar with the temperature measurement. Although there are non-invasive surface temperature sensors for measuring the skin temperature, however, these sensors do not have an error detection, so that z. For example, the readings of a sensor that has lost contact with the skin are not considered an artifact.
Kommerziell verfügbar sind auch mehrere Messsysteme, die über eine im Bett integrierte Druck- oder Beschleunigungsmessung ein Atem- und Pulssignal ohne Kabelverbindung zum Patienten ableiten können. Als Beispiele wären hier das Gerät ANGELCARE von BébéSounds, Tommee Tippee, LifeBed von Hoana Medical Inc. oder NB Vital Sign System von netblue zu nennen. Allerdings unterscheiden sich alle bei diesen Geräten verwendeten Sensorkonzepte deutlich von der erfindungsgemäßen Lehre der hier beschriebenen Multisensor-Vorrichtung unter anderem in Hinblick auf das zugrunde liegende kombinierte, voneinander unabhängige physikalische Prinzip und die ortsselektive Erfassung der physiologischen Signale.Also commercially available are several measuring systems that can derive a breath and pulse signal without cable connection to the patient via a pressure or acceleration measurement integrated in the bed. Examples include the device ANGELCARE by BébéSounds, Tommee Tippee, LifeBed by Hoana Medical Inc. or NB Vital Sign System by netblue. However, all of the sensor concepts used in these devices differ significantly from the teaching of the invention described herein multi-sensor device, inter alia, with regard to the underlying combined, independent physical principle and the location-selective detection of physiological signals.
In der Literatur finden sich vielfältige Veröffentlichungen zur kontaktfreien Ableitung des Elektrokardiograms mittels kapazitiven Elektroden (
Die Erfindung beschreibt einen hochintegrierten multimodalen Sensor, der kapazitiv elektrische Felder (z. B. das EKG, aber auch andere Biopotentiale wie das EMG oder EEG oder künstlich eingekoppelte Felder), optional die Oberflächentemperatur und gleichzeitig mittels eines optischen Sensorteils Relativbewegungen zwischen Sensor und Patient sowie volumetrisch herz- und atemsynchrone Blutvolumenschwankungen messen und somit Artefakte identifizieren kann. Der optische Sensorteil besteht aus mindestens einer oder mehreren frequenzselektiven Lichtquellen (Sender) mit gleicher und/oder unterschiedlicher Messwellenlänge, die gezielt Licht in das Gewebe einkoppeln, und mindestens einem Lichtdetektor (Empfänger), der das aus den Tiefen des Gewebes zurück zur Hautoberfläche gestreute Licht wieder empfängt. In dem optischen Signal kann auch der Puls detektiert werden, wenn keine Bewegung vorhanden ist. Erfindungsgemäß wird Licht des sichtbaren oder infraroten Frequenzspektrums verwendet, da dieser Wellenlängenbereich sehr tief in menschliches Gewebe eindringen und somit mit dem Pulssignal moduliert werden kann. Durch das Pulssignal lässt sich zusätzlich etwas über die Perfusion aussagen und in Kombination mit dem EKG kontaktfrei die Puls-Transit-Zeit bestimmen, wodurch Rückschlüsse auf den Blutdruck möglich werden. Wird Licht mit zwei unterschiedlichen Wellenlängen verwendet, so lässt sich auch die lokale Sauerstoff-Sättigung des Blutes bestimmen. Bei mehreren Lichtquellen oder mehreren Lichtdetektoren können die Abstände zwischen den einzelnen Quellen und Detektoren unterschiedlich weit sein, um gleichzeitig Signale aus unterschiedlichen Gewebetiefen auswerten zu können. The invention describes a highly integrated multimodal sensor, the capacitive electric fields (eg the ECG, but also other bio potentials like the EMG or EEG or artificially coupled fields), optionally the surface temperature and at the same time by means of an optical sensor part relative movements between sensor and patient as well Measure volumetrically cardiac and respiratory synchronous blood volume fluctuations and thus identify artifacts. The optical sensor part consists of at least one or more frequency-selective light sources (transmitters) with the same and / or different measurement wavelength, which specifically couple light into the tissue, and at least one light detector (receiver), which scatters the light scattered from the depths of the tissue back to the skin surface receives again. In the optical signal, the pulse can also be detected if there is no movement. According to the invention, light of the visible or infrared frequency spectrum is used, since this wavelength range can penetrate very deeply into human tissue and thus can be modulated with the pulse signal. In addition, the pulse signal provides information about the perfusion and, in combination with the ECG, determines the pulse transit time without contact, which makes it possible to draw conclusions about the blood pressure. If light with two different wavelengths is used, it is also possible to determine the local oxygen saturation of the blood. With several light sources or multiple light detectors, the distances between the individual sources and detectors can be different in order to simultaneously evaluate signals from different tissue depths.
Da die Artefakte in der kapazitiven EKG-Messung vor allem durch triboelektrische Effekte an Grenzflächen von zwei zu einander beweglichen Materialien hervorgerufen werden, die aus Relativbewegungen des Sensors zur Oberfläche resultieren (sowohl laterale Bewegungen als auch Abstandsänderungen, siehe hierzu
Werden mehrere Sensoren in einem Array in eine Matratzenauflage integriert, so ermöglichen diese Sensoren die Auswahl des am besten an den Patienten angekoppelten Sensors und somit die Messung eines sehr guten EKG-Signals. Die Diskriminierung der Sensoren kann entweder mittels eines künstlich in den Patienten eingespeisten elektrischen Signals oder über das Vorhandensein eines optischen Pulssignals erfolgen.If several sensors in an array are integrated into a mattress overlay, these sensors enable the selection of the sensor best coupled to the patient and thus the measurement of a very good ECG signal. The discrimination of the sensors can be done either by means of an artificially injected into the patient electrical signal or the presence of an optical pulse signal.
Typische Anwendungsorte sind Inkubatoren, Wärmebettchen, Kinderbetten, Krankenhausbetten und -liegen (z. B. OP- oder Dialyse-Liegen) oder häusliche Bett-Matratzen, aber auch spezielle Arbeitskleidung (wie beispielsweise Bekleidung für Leistungssportler, Rettungsdienste oder Astronautenbekleidung), sowie die Integration in Büro-, Flugzeug- oder Autositze.Typical applications include incubators, thermal beds, cribs, hospital beds and loungers (eg, OR or dialysis recliners), or domestic bed mattresses, as well as special workwear (such as athletic apparel, rescue services, or astronaut apparel) and integration in office, airplane or car seats.
Die Erfindung bezieht sich hauptsächlich auf die Integration und Fusion von zwei Einzel-Sensoren (kapazitive elektrische Feld-Messung und optische Bewegungs- und Pulsdetektion sowie daraus abgeleitet die Sauerstoffsättigung) und optional einer Temperaturmessung in einen Sensor zur multimodalen Messung von wichtigen physiologischen Parametern mit Artefakterkennung.The invention mainly relates to the integration and fusion of two individual sensors (capacitive electric field measurement and optical movement and pulse detection and derived therefrom oxygen saturation) and optionally a temperature measurement in a sensor for multimodal measurement of important physiological parameters with artifact detection.
Der Neuigkeitswert der Erfindung liegt auch in der erstmalig gebotenen Möglichkeit, mittels eines multimodalen Sensorkonzepts mehrere voneinander unabhängige physiologische Signale kontaktfrei zu messen und gleichzeitig mittels eines optischen Verfahrens eine Art Plausibilitätsprüfung durchführen zu können bzw. Artefakte zu erkennen. Dadurch kann ein Multisensor-Array aus Sensoren aufgebaut werden, aus dem dann automatisch die beste Elektrode bzw. die beste Elektrodenkombination für eine optimale Signalerfassung ausgewählt werden kann. Ferner wird keine manuelle Positionierung mehr benötigt, da bei einem Multisensor-Array eine automatische unüberwachte Elektrodenauswahl getroffen werden kann. Da beispielsweise die Herzfrequenz sowohl aus dem optischen als auch aus dem elektrischen Signal bestimmt werden kann, wird dadurch Redundanz hinzugefügt, welche die Robustheit der Messung weiter erhöht. Umgekehrt könnte diese erhöhte Robustheit auch zur Unterdrückung bzw. Erkennung von Artefakten bei der Sauerstoffsättigungsmessung benutzt werden, wenn in dem optischen Sensor mindestens zwei unterschiedliche Wellenlängen benutzt werden.The novelty value of the invention also lies in the possibility for the first time of being able to measure several independent physiological signals without contact by means of a multimodal sensor concept and at the same time being able to perform a kind of plausibility check by means of an optical method or to detect artifacts. As a result, a multisensor array of sensors can be constructed, from which then the best electrode or the best combination of electrodes can be automatically selected for optimum signal detection. Furthermore, manual positioning is no longer needed, as in a multi-sensor array, an automatic unsupervised electrode selection can be made. Since, for example, the heart rate can be determined from both the optical and the electrical signal, this adds redundancy, which further increases the robustness of the measurement. Conversely, this increased robustness could also be used to suppress or detect artefacts in the oxygen saturation measurement if at least two different wavelengths are used in the optical sensor.
Im Falle der Temperaturmessung verhält es sich ähnlich. Ist in dem optischen Signal ein Puls zu erkennen, so kann von einer stabilen Wechselwirkung mit der Haut ausgegangen werden, so dass die gemessene Elektroden-Temperatur mit hoher Wahrscheinlichkeit auch der Hauttemperatur entspricht. Treten Artefakte auf, kann abhängig von der thermischen Masse des Sensors der Zeitbereich markiert werden, der vermutlich durch die Bewegung eine gestörte Temperaturmessung darstellt.In the case of temperature measurement, it behaves similarly. If a pulse can be detected in the optical signal, a stable interaction with the skin can be assumed, so that the measured electrode temperature with high probability also corresponds to the skin temperature. If artifacts occur, the time range can be marked depending on the thermal mass of the sensor, which probably represents a disturbed temperature measurement due to the movement.
Die Veröffentlichung von Feddes et al. (
Die Veröffentlichung von Chetelat und Ko-Autoren (
Die Integration mehrerer kontaktfreier Sensorprinzipien in einem integrierten Sensor und die Verwendung des optischen Signals als Artefakt-Detektion, wie sie hier auch geschützt werden soll, ist nach unserem Kenntnisstand bisher nicht Gegenstand von allen uns bekannten Veröffentlichungen anderer Arbeitsgruppen.The integration of several non-contact sensor principles in an integrated sensor and the use of the optical signal as artifact detection, as it should be protected here, is to our knowledge so far not the subject of all known publications of other groups.
Der Vorteil des integrierten multimodalen Sensors gegenüber Standardsensoren liegt im Wegfall von leitenden Verbindungen (Kabeln) zwischen Messtechnik und Patient, der Reduzierung der benötigten Sensoren und der Erhöhung der Robustheit einer Messung. Durch Klebelektroden hervorgerufene Hautirritationen und zusätzliche Stresserscheinungen können außerdem vermieden werden, infolge der Einsparung von Wegwerfartikeln werden die Umwelt geschont und Kosten gespart. Durch den kontaktlosen Ansatz der Messtechnik wird der Patient in keinster Weise behindert oder eingeschränkt. Die Integration von optischen Sensoren und ggf. von Temperatursensoren in kapazitive Sensoren zur Messung von elektrischen Feldes zur Bestimmung der physiologischen Parametern hat den höchsten Neuigkeitswert und stellt damit den Hauptschutzanspruch für das Patent dar.The advantage of the integrated multimodal sensor compared to standard sensors lies in the elimination of conductive connections (cables) between measurement technology and patient, the reduction of the required sensors and the increase of the robustness of a measurement. Adhesive electrode-induced skin irritation and additional stressors can also be avoided, as a result of the saving of disposable articles the environment is protected and costs are saved. The contactless approach of the measurement technique does not obstruct or restrict the patient in any way. The integration of optical sensors and possibly temperature sensors into capacitive sensors for measuring electric field for determining the physiological parameters has the highest innovation value and thus represents the main protection claim for the patent.
Die Hauptaufgabe der Erfindung liegt darin, das oben Geschriebene erstmalig in Form einer einfach und kostengünstig realisierbaren Multisensor-Vorrichtung zur ortsaufgelösten, artefaktresistenten Überwachung von physiologischen Signalen umzusetzen.The main object of the invention is to implement the above written for the first time in the form of a simple and inexpensive realizable multi-sensor device for spatially resolved, artifact-resistant monitoring of physiological signals.
Eine erfindungsgemäße Lösung dieser Aufgabe ist im Patentanspruch 1 gekennzeichnet. Weiterbildungen der Erfindung sind Gegenstand der folgenden Ansprüche.An inventive solution to this problem is characterized in
Die Erfindung wird nachstehend ohne Beschränkung des allgemeinen Erfindungsgedankens anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnungen exemplarisch beschrieben, auf die im Übrigen bezüglich der Offenbarung aller im Text nicht näher erläuterten erfindungsgemäßen Einzelheiten ausdrücklich verwiesen wird.The invention will now be described by way of example without limitation of the general inventive concept using exemplary embodiments with reference to the drawings, to which reference is expressly made, moreover, with respect to the disclosure of all details of the invention not explained in detail in the text.
Die geometrische Ausführung ist nicht eingeschränkt und ist in vielfältiger weise machbar, z. B. oktogonaler Form, rotationssymmetrisch, achsensymmetrisch oder asymmetrisch.The geometric design is not limited and is feasible in many ways, for. As octagonal shape, rotationally symmetric, axisymmetric or asymmetric.
Es zeigen:Show it:
In der
In einem anderen Anwendungsbeispiel kann der erfindungsgemäße multimodale Sensor auch direkt auf die Haut gelegt und an ihr befestigt werden. Auch können die einzelnen Elektrodenpartitionen innerhalb eines einzigen Sensors genauso wie die Elektroden zwischen mehreren multimodalen Sensoren zusätzlich zur Registrierung von Muskelpotentialen (EMG) oder Gehirnpotentialen (EEG) verwendet werden. Auch hier ermöglicht die Vorrichtung eine ortsaufgelöste Detektion von physiolgischen Parametern, kombiniert mit Bestimmung der Nervenleitgeschwindigkeit. Für besondere Anwendungsszenarien können hochintegrierte Versionen von Multisensor-Vorrichtungen derart ausgebildet werden, dass die Auswerteeinheit (AE) direkt in das Multisensorgehäuse (S) integriert wird; die Kommunikation jedes einzelnen Multisensors mit der Zentralen Auswerteeinheit (BC) geschieht in diesem Fall vorzugsweise drahtlos.In another application example, the multimodal sensor according to the invention can also placed directly on the skin and attached to it. Also, the individual electrode partitions within a single sensor as well as the electrodes between multiple multimodal sensors may be used in addition to registering muscle potentials (EMG) or brain potentials (EEG). Again, the device allows a spatially resolved detection of physiological parameters, combined with determination of nerve conduction velocity. For special application scenarios, highly integrated versions of multi-sensor devices can be designed such that the evaluation unit (AE) is integrated directly into the multi-sensor housing (S); the communication of each individual multisensor with the central evaluation unit (BC) in this case preferably takes place wirelessly.
Um eine elektrische Messung der Ankopplung oder eine kapazitive Bioimpedanzmessung durchführen zu können, können einzelne Partitionen oder die Sensorrückseite auch als aktiv getriebener Ausgang geschaltet werden.In order to perform an electrical measurement of the coupling or a capacitive bioimpedance measurement, individual partitions or the sensor back can also be switched as an actively driven output.
Auswahl von Literaturhinweisen zum Stand der TechnikSelection of References to the Prior Art
-
.Feddes, B.; Gourmelon, L.; Meftah, M.; Ikkink, T. (2007): Reducing Motion Artefacts of Capacitive Sensors. In: Engineering in Medicine and Biology Society, 2007. EMBS 2007: 29th Annual International Conference of the IEEE, S. 1532. Online verfügbar unter http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=4352593 ,Feddes, B .; Gourmelon, L .; Meftah, M .; Ikkink, T. (2007): Reducing Motion Artefacts of Capacitive Sensors. In: Engineering in Medicine and Biology Society, 2007. EMBS 2007: 29th Annual International Conference of the IEEE, p. 1532. Available online at http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=4352593 -
.Hyun, Jae Baek; Gih, Sung Chung; Ko, Keun Kim; Jung, Soo Kim; Kwang, Suk Park (2009): Photoplethysmogram Measurement Without Direct Skin-to-Sensor Contact Using an Adaptive Light Source Intensity Control. In: IEEE Transactions on Information Technology in Biomedicine 13 (6), S. 1085–1088. Online verfügbar unter http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=5256146 ,Hyun, Jae Baek; Gih, Sung Chung; Ko, Keun Kim; Young, Soo Kim; Kwang, Suk Park (2009): Photoplethysmogram Measurement Without Direct Skin-to-Sensor Contact Using an Adaptive Light Source Intensity Control. In: IEEE Transactions on Information Technology in Biomedicine 13 (6), pp. 1085-1088. Available online at http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=5256146 -
.Kim, Sunyoung; Yazicioglu, Refet Firat; Torfs, Tom; Dilpreet, Buxi; Julien, Penders; van Hoof, Chris (2010): A 2.4$\Imu$A continuous-time electrode-skin impedance measurement circuit for motion artifact monitoring in ECG acquisition systems: IEEE ,Kim, Sunyoung; Yazicioglu, Refet Firat; Peat, Tom; Dilpreet, Buxi; Julien, Penders; van Hoof, Chris (2010): A 2.4 $ \ Imu $ A continuous-time electrode-skin measurement measurement circuit for motion artifact monitoring in ECG acquisition systems: IEEE -
.Oehler, M; Ling, V; Melhorn, K; Schilling, M (2008): A multichannel portable ECG system with capacitive sensors. In: Physiol. Meas 29 (7), S. 783–793 ,Oehler, M; Ling, V; Melhorn, K; Schilling, M (2008): A multichannel portable ECG system with capacitive sensors. In: Physiol. Meas 29 (7), pp. 783-793 -
.Ottenbacher, Jörg; Kirst, Malte; Jatoba, Luciana; Huflejt, Michal; Grossmann, Ulrich; Stork, Wilhelm (2008): Reliable motion artifact detection for ECG monitoring systems with dry electrodes. In: Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE. EMBS. Vancouver, BC, 20–25 Aug.: IEEE, S. 1695–1698 ,Ottenbacher, Joerg; Kirst, Malte; Jatoba, Luciana; Huflejt, Michal; Grossmann, Ulrich; Stork, Wilhelm (2008): Reliable motion artifact detection for ECG monitoring systems with dry electrodes. In: Engineering in Medicine and Biology Society, 2008. EMBS 2008. 30th Annual International Conference of the IEEE. EMBS. Vancouver, BC, 20-25 Aug .: IEEE, pp. 1695-1698 -
.Wartzek, T.; Lammersen, T.; Eilebrecht, B.; Walter, M.; Leonhardt, S. (2011): Triboelectricity in Capacitive Biopotential Measurements. In: IEEE Trans. Biomed. Eng.; 58 (5): 1268–77 ,Wartzek, T .; Lammersen, T .; Eilebrecht, B .; Walter, M .; Leonhardt, S. (2011): Triboelectricity in Capacitive Biopotential Measurements. In: IEEE Trans. Biomed. Closely.; 58 (5): 1268-77 -
.Wu, Kin-fai; Zhang, Yuang-ting (2008): Contactless and continuous monitoring of heart electric activities through clothes on a sleeping bed. In: International Conference on Technology and Applications in Biomedicine, 2008. Shenzhen, China. Institute of Biomedical and Health Engineering; Engineering in Medicine and Biology Society; International Conference on Technology and Applications in Biomedicine; ITAB; International Conference on Information Technology and Applications in Biomedicine; International Symposium & Summer School on Biomedical and Health Engineering; IS3BHE. Piscataway, NJ: IEEE, S. 282–285 ,Wu, Kin-fai; Zhang, Yuang-ting (2008): "Contactless and continuous monitoring of heart electric activities through clothes on a sleeping bed". In: International Conference on Technology and Applications at Biomedicine, 2008. Shenzhen, China. Institute of Biomedical and Health Engineering; Engineering in Medicine and Biology Society; International Conference on Technology and Applications in Biomedicine; ITAB; International Conference on Information Technology and Applications in Biomedicine; International Symposium & Summer School on Biomedical and Health Engineering; IS3BHE. Piscataway, NJ: IEEE, pp. 282-285 -
.Chetelat, O.; Sola i Caros, J.; Krauss, J.; Dasen, S.; Droz, S.; Gentsch, R. et al. (2006): Continuous multi-parameter health monitoring system. In: R Magjarevic und J H Nagel (Hg.): World Congress on Medical Physics and Biomedical Engineering. Seoul, Korea, 27 Aug–1 Sep 2006. 14. Aufl.: Springer Berlin Heidelberg (IFMBE Proceedings, 7), S. 684–687 ,Chetelate, O .; Sola i Caros, J .; Krauss, J .; Das, S .; Droz, S .; Gentsch, R. et al. (2006): Continuous multi-parameter health monitoring system. In: R Magjarevic and JH Nagel (eds.): World Congress on Medical Physics and Biomedical Engineering. Seoul, Korea, 27 Aug-1 Sep 2006. 14th Ed .: Springer Berlin Heidelberg (IFMBE Proceedings, 7), pp. 684-687
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 3100610 [0004] DE 3100610 [0004]
- DE 3609075 [0004] DE 3609075 [0004]
- DE 4226973 [0004] DE 4226973 [0004]
Zitierte Nicht-PatentliteraturCited non-patent literature
- Oehler et al. 2008 [0008] Oehler et al. 2008 [0008]
- Wu und Zhang 2008 [0008] Wu and Zhang 2008 [0008]
- Kim et al. 2010 [0008] Kim et al. 2010 [0008]
- Ottenbacher et al. 2008 [0008] Ottenbacher et al. 2008 [0008]
- Feddes et al. 2007 [0008] Feddes et al. 2007 [0008]
- Hyun et al. 2009 [0008] Hyun et al. 2009 [0008]
- Wartzek et al. 2010 [0010] Wartzek et al. 2010 [0010]
- Feddes et al. 2007 [0016] Feddes et al. 2007 [0016]
- Chetelat et al. 2006 [0017] Chetelat et al. 2006 [0017]
Claims (22)
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| DE102011112226A DE102011112226A1 (en) | 2011-08-30 | 2011-08-30 | Multi-model multi-sensor device for contact-less detection and monitoring of physiological signals of resting or active working people, has sensors for simultaneous capacitive and optoelectronic detection of physiological signals |
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| WO2015174879A1 (en) | 2014-05-14 | 2015-11-19 | Novelic D.O.O. | Mm-wave radar vital signs detection apparatus and method of operation |
| WO2015183844A1 (en) * | 2014-05-30 | 2015-12-03 | Microsoft Technology Licensing, Llc | Ring-shaped skin sensor |
| DE102016105860A1 (en) * | 2016-03-31 | 2017-10-05 | Hochschule Für Technik Und Wirtschaft Berlin | protective clothing |
| EP3868285A1 (en) * | 2020-02-14 | 2021-08-25 | Technische Hochschule Lübeck | Method for contactless measurement of at least one vital parameter of a patient |
| CN118749922A (en) * | 2024-09-06 | 2024-10-11 | 西湖大学 | Multimodal fusion detection device based on optical pumping technology |
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Cited By (11)
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| US20150051468A1 (en) * | 2013-08-16 | 2015-02-19 | Texas Instruments Incorporated | Blood pulse measurement based on capacitive sensing |
| US11596320B2 (en) * | 2013-08-16 | 2023-03-07 | Texas Instruments Incorporated | Blood pulse measurement based on capacitive sensing |
| DE102014104465B3 (en) * | 2014-03-28 | 2015-06-11 | LifeTAix GmbH | Measuring method for recording vital parameters on the body of a human or an animal and a measuring arrangement |
| WO2015174879A1 (en) | 2014-05-14 | 2015-11-19 | Novelic D.O.O. | Mm-wave radar vital signs detection apparatus and method of operation |
| WO2015183844A1 (en) * | 2014-05-30 | 2015-12-03 | Microsoft Technology Licensing, Llc | Ring-shaped skin sensor |
| US9833164B2 (en) | 2014-05-30 | 2017-12-05 | Microsoft Technology Licensing, Llc | Ring-shaped skin sensor |
| US10827944B2 (en) | 2014-05-30 | 2020-11-10 | Microsoft Technology Licensing, Llc | Ring-shaped skin sensor |
| DE102016105860A1 (en) * | 2016-03-31 | 2017-10-05 | Hochschule Für Technik Und Wirtschaft Berlin | protective clothing |
| WO2017167331A1 (en) | 2016-03-31 | 2017-10-05 | Hochschule Für Technik Und Wirtschaft Berlin | Protective clothing |
| EP3868285A1 (en) * | 2020-02-14 | 2021-08-25 | Technische Hochschule Lübeck | Method for contactless measurement of at least one vital parameter of a patient |
| CN118749922A (en) * | 2024-09-06 | 2024-10-11 | 西湖大学 | Multimodal fusion detection device based on optical pumping technology |
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