ATE513508T1 - Sensoranordnung und verfahren zur überwachung physiologischer parameter - Google Patents

Sensoranordnung und verfahren zur überwachung physiologischer parameter

Info

Publication number
ATE513508T1
ATE513508T1 AT08737833T AT08737833T ATE513508T1 AT E513508 T1 ATE513508 T1 AT E513508T1 AT 08737833 T AT08737833 T AT 08737833T AT 08737833 T AT08737833 T AT 08737833T AT E513508 T1 ATE513508 T1 AT E513508T1
Authority
AT
Austria
Prior art keywords
sensor arrangement
textile
physiological parameters
monitoring physiological
person
Prior art date
Application number
AT08737833T
Other languages
English (en)
Inventor
Andreas Brauers
Alexander Ulrich Douglas
Harald Reiter
Xavier Louis Marie Antoine Aubert
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Application granted granted Critical
Publication of ATE513508T1 publication Critical patent/ATE513508T1/de

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
    • A61B5/282—Holders for multiple electrodes
    • 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
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/6804—Garments; Clothes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/25—Bioelectric electrodes therefor
    • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
    • A61B5/296—Bioelectric electrodes therefor specially adapted for particular uses for electromyography [EMG]
    • 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
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02—Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0209—Special features of electrodes classified in A61B5/24, A61B5/25, A61B5/283, A61B5/291, A61B5/296, A61B5/053
    • A61B2562/0215—Silver or silver chloride containing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/04—Arrangements of multiple sensors of the same type
    • A61B2562/046—Arrangements of multiple sensors of the same type in a matrix array
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00—Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/18—Shielding or protection of sensors from environmental influences, e.g. protection from mechanical damage
    • A61B2562/182—Electrical shielding, e.g. using a Faraday cage

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cardiology (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Measuring And Recording Apparatus For Diagnosis (AREA)
  • Bedding Items (AREA)
AT08737833T 2007-04-24 2008-04-14 Sensoranordnung und verfahren zur überwachung physiologischer parameter ATE513508T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07106846 2007-04-24
PCT/IB2008/051409 WO2008129446A1 (en) 2007-04-24 2008-04-14 Sensor arrangement and method for monitoring physiological parameters

Publications (1)

Publication Number Publication Date
ATE513508T1 true ATE513508T1 (de) 2011-07-15

Family

ID=39720135

Family Applications (1)

Application Number Title Priority Date Filing Date
AT08737833T ATE513508T1 (de) 2007-04-24 2008-04-14 Sensoranordnung und verfahren zur überwachung physiologischer parameter

Country Status (6)

Country Link
US (1) US8583206B2 (de)
EP (1) EP2150173B1 (de)
JP (1) JP5357142B2 (de)
CN (1) CN101662984B (de)
AT (1) ATE513508T1 (de)
WO (1) WO2008129446A1 (de)

Families Citing this family (75)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011519177A (ja) * 2008-04-29 2011-06-30 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 電子テキスタイル
EP2236078A1 (de) * 2009-04-02 2010-10-06 Koninklijke Philips Electronics N.V. Verarbeitung eines biologisch/physiologischen Signals
BRPI1008199A2 (pt) * 2009-06-05 2016-03-01 Koninkl Philips Electronics Nv sistema de detecção capacitiva para detectar um objeto, método de deteção capacitiva para detectar um objeto e programa de computador para detectar um objeto
JP2011000223A (ja) * 2009-06-17 2011-01-06 Toyota Motor Corp 筋電位計測装置
CA2761036C (en) 2010-12-08 2019-02-12 Groupe Ctt Inc. Fully integrated three-dimensional textile electrodes
US10159440B2 (en) 2014-03-10 2018-12-25 L.I.F.E. Corporation S.A. Physiological monitoring garments
US9817440B2 (en) 2012-09-11 2017-11-14 L.I.F.E. Corporation S.A. Garments having stretchable and conductive ink
US10201310B2 (en) 2012-09-11 2019-02-12 L.I.F.E. Corporation S.A. Calibration packaging apparatuses for physiological monitoring garments
US8945328B2 (en) 2012-09-11 2015-02-03 L.I.F.E. Corporation S.A. Methods of making garments having stretchable and conductive ink
US10462898B2 (en) 2012-09-11 2019-10-29 L.I.F.E. Corporation S.A. Physiological monitoring garments
US11246213B2 (en) 2012-09-11 2022-02-08 L.I.F.E. Corporation S.A. Physiological monitoring garments
US8948839B1 (en) 2013-08-06 2015-02-03 L.I.F.E. Corporation S.A. Compression garments having stretchable and conductive ink
WO2014041032A1 (en) 2012-09-11 2014-03-20 L.I.F.E. Corporation S.A. Wearable communication platform
EP2898477B1 (de) * 2012-09-21 2018-07-11 Koninklijke Philips N.V. Bewegungsrobuste vitalzeichenüberwachung
JP5986008B2 (ja) * 2013-02-08 2016-09-06 日本電信電話株式会社 導電性布帛の製造方法、及び生体信号測定装置の製造方法
TWM462093U (zh) * 2013-05-10 2013-09-21 Wei-Chun Huang 用於十二導程心電圖檢查的輔助裝置
DE102013108810A1 (de) * 2013-08-14 2015-02-19 Capical Gmbh Textile kapazitive Elektrode, Verfahren zu deren Herstellung sowie Verwendung
US11921471B2 (en) 2013-08-16 2024-03-05 Meta Platforms Technologies, Llc Systems, articles, and methods for wearable devices having secondary power sources in links of a band for providing secondary power in addition to a primary power source
US20150124566A1 (en) 2013-10-04 2015-05-07 Thalmic Labs Inc. Systems, articles and methods for wearable electronic devices employing contact sensors
US10188309B2 (en) 2013-11-27 2019-01-29 North Inc. Systems, articles, and methods for electromyography sensors
US12504816B2 (en) 2013-08-16 2025-12-23 Meta Platforms Technologies, Llc Wearable devices and associated band structures for sensing neuromuscular signals using sensor pairs in respective pods with communicative pathways to a common processor
US10042422B2 (en) 2013-11-12 2018-08-07 Thalmic Labs Inc. Systems, articles, and methods for capacitive electromyography sensors
KR101494865B1 (ko) * 2013-08-30 2015-02-23 연세대학교 산학협력단 어레이형 유도용량성 생체신호 전극 및 이를 구비한 생체신호 검출키트
JP6567800B2 (ja) * 2013-12-26 2019-08-28 フクダ電子株式会社 生体電極
WO2015103620A1 (en) 2014-01-06 2015-07-09 Andrea Aliverti Systems and methods to automatically determine garment fit
US11534076B2 (en) * 2014-02-25 2022-12-27 School Juridical Person Kitasato Institute Image generation apparatus, conductivity acquisition apparatus, image generation method, and program
US9880632B2 (en) 2014-06-19 2018-01-30 Thalmic Labs Inc. Systems, devices, and methods for gesture identification
US9808202B2 (en) * 2014-11-28 2017-11-07 Shenzhen Novocare Medical Devices Co, INC Mattress for measuring physiological parameters of heart
CN104411150B (zh) * 2014-11-28 2018-08-14 深圳诺康医疗设备股份有限公司 一种床垫
CN104398358A (zh) * 2014-11-28 2015-03-11 深圳诺康医疗设备有限公司 一种测量心脏生理参数的床垫
CN104398357B (zh) * 2014-11-28 2017-02-22 深圳诺康医疗设备有限公司 一种测量心脏生理参数的床垫
AU2016236838B2 (en) * 2015-03-23 2020-03-19 Repono Pty Ltd Muscle activity monitoring
KR20160138839A (ko) * 2015-05-26 2016-12-06 코오롱인더스트리 주식회사 기능성 의류
JP6937299B2 (ja) 2015-07-20 2021-09-22 エル.アイ.エフ.イー. コーポレーション エス.エー.L.I.F.E. Corporation S.A. センサ及び電子機器を有する衣類用の可撓性織物リボンコネクタ
JP6650090B2 (ja) * 2016-02-22 2020-02-19 ジャトー株式会社 電気信号取得装置
CN106037732A (zh) * 2016-05-11 2016-10-26 苏州海神联合医疗器械有限公司 电磁屏蔽表面肌电电极及其制备方法
JP6677889B2 (ja) * 2016-06-30 2020-04-08 ジャトー株式会社 電気信号取得装置
WO2018002722A1 (en) 2016-07-01 2018-01-04 L.I.F.E. Corporation S.A. Biometric identification by garments having a plurality of sensors
EP3487595A4 (de) 2016-07-25 2019-12-25 CTRL-Labs Corporation System und verfahren zur messung der bewegungen von gelenkigen starren körpern
US12554325B2 (en) 2016-07-25 2026-02-17 Meta Platforms Technologies, Llc Methods and apparatuses for low latency body state prediction based on neuromuscular data
WO2018022658A1 (en) 2016-07-25 2018-02-01 Ctrl-Labs Corporation Adaptive system for deriving control signals from measurements of neuromuscular activity
WO2018022602A1 (en) 2016-07-25 2018-02-01 Ctrl-Labs Corporation Methods and apparatus for predicting musculo-skeletal position information using wearable autonomous sensors
EP3487402B1 (de) 2016-07-25 2021-05-05 Facebook Technologies, LLC Verfahren und vorrichtung zum schliessen auf die absicht eines benutzers auf der grundlage von neuromuskulären signalen
US11216069B2 (en) 2018-05-08 2022-01-04 Facebook Technologies, Llc Systems and methods for improved speech recognition using neuromuscular information
GB201809007D0 (en) * 2018-06-01 2018-07-18 Smith & Nephew Restriction of sensor-monitored region for sensor-enabled wound dressings
EP3697297A4 (de) 2017-10-19 2020-12-16 Facebook Technologies, Inc. Systeme und verfahren zur identifizierung biologischer strukturen in zusammenhang mit signalen neuromuskulären ursprungs
EP3492009B1 (de) * 2017-11-29 2023-12-13 Nokia Technologies Oy Vorrichtung mit einem gewebesubstrat und elektroden
US11493993B2 (en) 2019-09-04 2022-11-08 Meta Platforms Technologies, Llc Systems, methods, and interfaces for performing inputs based on neuromuscular control
US11481030B2 (en) 2019-03-29 2022-10-25 Meta Platforms Technologies, Llc Methods and apparatus for gesture detection and classification
US11961494B1 (en) 2019-03-29 2024-04-16 Meta Platforms Technologies, Llc Electromagnetic interference reduction in extended reality environments
US12579768B2 (en) 2018-01-25 2026-03-17 Meta Platforms Technologies, Llc Wearable electronic devices, extended reality systems including neuromuscular sensors, and methods for generating text from speech input and modifying the generated text based on neuromuscular data
US11907423B2 (en) 2019-11-25 2024-02-20 Meta Platforms Technologies, Llc Systems and methods for contextualized interactions with an environment
US10937414B2 (en) 2018-05-08 2021-03-02 Facebook Technologies, Llc Systems and methods for text input using neuromuscular information
US11150730B1 (en) 2019-04-30 2021-10-19 Facebook Technologies, Llc Devices, systems, and methods for controlling computing devices via neuromuscular signals of users
EP3743892B1 (de) 2018-01-25 2025-03-05 Meta Platforms Technologies, LLC Visualisierung von rekonstruierten handzustandsinformationen
US10592001B2 (en) 2018-05-08 2020-03-17 Facebook Technologies, Llc Systems and methods for improved speech recognition using neuromuscular information
CN112261907A (zh) 2018-05-29 2021-01-22 脸谱科技有限责任公司 表面肌电信号测量中降噪的屏蔽技术及相关系统和方法
CN112585600A (zh) 2018-06-14 2021-03-30 脸谱科技有限责任公司 使用神经肌肉标记进行用户识别和认证
CN109171702A (zh) * 2018-07-05 2019-01-11 廖优义 一种非接触式心电信号的测量装置和测量方法
US11045137B2 (en) 2018-07-19 2021-06-29 Facebook Technologies, Llc Methods and apparatus for improved signal robustness for a wearable neuromuscular recording device
MX2021001219A (es) 2018-07-31 2021-04-12 Covestro Netherlands Bv Metodo para monitorear la calidad de un colchon.
JP6677769B2 (ja) * 2018-08-07 2020-04-08 フクダ電子株式会社 生体電極
EP3836836B1 (de) 2018-08-13 2024-03-20 Meta Platforms Technologies, LLC Echtzeiterfassung und -identifizierung von spikes
EP3843617B1 (de) 2018-08-31 2023-10-04 Facebook Technologies, LLC. Kamerageführte interpretation von neuromuskulären signalen
EP3853698A4 (de) 2018-09-20 2021-11-17 Facebook Technologies, LLC Neuromuskuläre texteingabe, schreiben und zeichnen in systemen mit erweiterter realität
US10921764B2 (en) 2018-09-26 2021-02-16 Facebook Technologies, Llc Neuromuscular control of physical objects in an environment
EP3860527B1 (de) 2018-10-05 2024-07-10 Meta Platforms Technologies, LLC Verwendung von neuromuskulären signalen zur verbesserten interaktion mit physikalischen objekten in einer umgebung der erweiterten realität
JP6676732B2 (ja) * 2018-11-14 2020-04-08 日本電信電話株式会社 衣類、および生体信号測定装置
CN113423341B (zh) 2018-11-27 2024-12-03 元平台技术有限公司 用于可穿戴电极传感器系统的自动校准的方法和装置
US10905383B2 (en) 2019-02-28 2021-02-02 Facebook Technologies, Llc Methods and apparatus for unsupervised one-shot machine learning for classification of human gestures and estimation of applied forces
US12089953B1 (en) 2019-12-04 2024-09-17 Meta Platforms Technologies, Llc Systems and methods for utilizing intrinsic current noise to measure interface impedances
US11696861B1 (en) 2020-06-15 2023-07-11 Kendrick L. Riley Crib bedding with temperature gauge
US11868531B1 (en) 2021-04-08 2024-01-09 Meta Platforms Technologies, Llc Wearable device providing for thumb-to-finger-based input gestures detected based on neuromuscular signals, and systems and methods of use thereof
EP4329611A4 (de) * 2021-04-30 2024-09-04 Delsys Incorporated Erkennung und verarbeitung von biopotentialen
CN119498957A (zh) * 2023-08-25 2025-02-25 武汉联影智融医疗科技有限公司 电磁导航系统及其磁场抗干扰方法、装置和电子设备

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3207014A1 (de) * 1982-02-26 1983-09-08 Gerhard 6433 Philippsthal Bohn Betteil
US4763660A (en) * 1985-12-10 1988-08-16 Cherne Industries, Inc. Flexible and disposable electrode belt device
US5578359A (en) 1994-11-29 1996-11-26 Hewlett Packard Company Magnetic shielding garment for electro-biologic measurements
US6546813B2 (en) 1997-01-08 2003-04-15 The Trustees Of Boston University Patient monitoring system employing array of force sensors on a bedsheet or similar substrate
US5968854A (en) 1997-10-03 1999-10-19 Electromagnetic Protection, Inc. EMI shielding fabric and fabric articles made therefrom
WO2001037286A1 (en) * 1999-11-17 2001-05-25 Amiram Katz Protective gear for individuals with implanted electronic devices and others exposed to hazardous electromagnetic radiation
US20020019588A1 (en) * 2000-06-23 2002-02-14 Marro Dominic P. Frontal electrode array for patient EEG signal acquisition
US7666151B2 (en) 2002-11-20 2010-02-23 Hoana Medical, Inc. Devices and methods for passive patient monitoring
US6870109B1 (en) 2001-06-29 2005-03-22 Cadwell Industries, Inc. System and device for reducing signal interference in patient monitoring systems
DE10238310A1 (de) * 2002-08-21 2004-03-04 Erich Jaeger Gmbh Elektrodenanordnung
AT412756B (de) * 2002-12-13 2005-07-25 Leonhard Lang Kg Medizinische elektrode
GB0311320D0 (en) 2003-05-19 2003-06-25 Univ Manchester Knitted transducer devices
US7559902B2 (en) * 2003-08-22 2009-07-14 Foster-Miller, Inc. Physiological monitoring garment
EP1731094B1 (de) 2004-03-24 2014-02-26 Nihon Kohden Corporation Kleidungsstück mit einem respiratorischen Informationen-Analysegerät
DE102004036878B4 (de) * 2004-07-29 2008-04-10 Dräger Safety AG & Co. KGaA Verfahren und Vorrichtung zur Funkübertragung von in Körpernähe generierten Signalen
US7515950B2 (en) * 2004-08-17 2009-04-07 Healy James W Biomedical electrodes and biomedical electrodes for electrostimulation
TWI274270B (en) * 2004-11-23 2007-02-21 Taiwan Textile Res Inst Wireless-transmitting electrocardiogram (ECG) monitoring structure
ATE464837T1 (de) * 2004-11-25 2010-05-15 Taiwan Textile Res Inst Drahtlos arbeitendes, tragbares elektrocardiographisches überwachungsgerät
EP1890594B1 (de) * 2005-06-07 2014-11-19 Philips Intellectual Property & Standards GmbH Vorrichtung und verfahren zur überwachung von patienten
US7712373B2 (en) * 2006-03-03 2010-05-11 Nagle H Troy Sensor device for real-time monitoring or relative movement using capacitive fabric sensors

Also Published As

Publication number Publication date
EP2150173A1 (de) 2010-02-10
WO2008129446A1 (en) 2008-10-30
US8583206B2 (en) 2013-11-12
EP2150173B1 (de) 2011-06-22
CN101662984B (zh) 2013-10-30
US20100113910A1 (en) 2010-05-06
JP5357142B2 (ja) 2013-12-04
JP2010524620A (ja) 2010-07-22
CN101662984A (zh) 2010-03-03

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