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EP2317910A1 - Procédé de visualisation de signaux multicanaux - Google Patents

Procédé de visualisation de signaux multicanaux

Info

Publication number
EP2317910A1
EP2317910A1 EP09777033A EP09777033A EP2317910A1 EP 2317910 A1 EP2317910 A1 EP 2317910A1 EP 09777033 A EP09777033 A EP 09777033A EP 09777033 A EP09777033 A EP 09777033A EP 2317910 A1 EP2317910 A1 EP 2317910A1
Authority
EP
European Patent Office
Prior art keywords
signals
contraction
display
displayed
intensity
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP09777033A
Other languages
German (de)
English (en)
Inventor
Georg Brandmayr
Hubert Egger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Otto Bock Healthcare Products GmbH
Original Assignee
Otto Bock Healthcare Products GmbH
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 Otto Bock Healthcare Products GmbH filed Critical Otto Bock Healthcare Products GmbH
Publication of EP2317910A1 publication Critical patent/EP2317910A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/68—Operating or control means
    • A61F2/70—Operating or control means electrical
    • A61F2/72—Bioelectric control, e.g. myoelectric
    • 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
    • A61B5/486—Bio-feedback
    • 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
    • A61B5/742—Details of notification to user or communication with user or patient ; user input means using visual displays
    • A61B5/743—Displaying an image simultaneously with additional graphical information, e.g. symbols, charts, function plots
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/20—Drawing from basic elements, e.g. lines or circles
    • G06T11/206—Drawing of charts or graphs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/001—Texturing; Colouring; Generation of texture or colour
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G09G5/06—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed using colour palettes, e.g. look-up tables

Definitions

  • the invention relates to a method for visualizing multichannel sensor signals, in particular myoelectric signals, which are derived via electrodes from a limb or an amputation stump.
  • Driven prostheses which have a motor drive to move components to each other, need control signals to make the drives work as they should.
  • myoelectric signals are derived via electrodes and, if necessary, amplification is used via a control device as pulses for activating or deactivating drives.
  • a control device To generate meaningful, myoelectric signals, it is necessary to contract muscles or residual muscles after amputations. From the contraction pattern corresponding signals can then be generated, via which the drives are moved.
  • Such a myoelectric prosthesis control can be used in people with amputations or dysmelia. In principle, a corresponding myoelectric control of driven orthoses is also possible.
  • the increase in the number of signals can be achieved by increasing the contraction patterns and / or increasing the number of electrodes. Nonetheless, it is difficult for the patient to specifically contract muscles or residual muscles without visual feedback. Intact people see their extremities react to their will to move their extremities in a certain way. If a muscle is strained, for example the armbraps, the human sees and feels a movement of the forearm. In particular, a visible feedback of mental contraction commands in the form of movements can be coordinative Skills are improved.
  • the object of the invention is to provide a simple and meaningful interpretation of a movement will, especially for a non-existing limb. According to the invention, this object is achieved by a method having the features of the main claim. Advantageous embodiments and further developments of the method are listed in the subclaims.
  • the method of visualizing multichannel sensor signals received by the body to detect muscle activity provides that each signal is assigned a display direction and a display amount.
  • the display direction represents exactly one signal, eg electrode signal, the display amount represents the intensity of the signal, that is, the intensity of the motor activity of the respective muscle or its nerve, z.
  • B the contraction intensity of the respective muscle associated with the sensor or the electrode.
  • the display direction and the display amount of all sensor signals are simultaneously displayed on a display device as a graphic object in real time, so that the motion will be reflected in the form of assignable, reproducible shapes.
  • the patient receives immediate visual feedback because all signals are displayed in real-time on a display device, especially a screen.
  • a display device especially a screen.
  • Each different movement will, for example, "fist ball” or "wrist bow”, create different objects, both the shape and the size may differ.
  • the display of the graphic object which is displayed in dependence on the nature and intensity of the motor activity or muscle contraction on a display device in real time, there is a immediate feedback of the will to move in visual form.
  • the patient sees what he would like to do or would do if the limb were undisturbed.
  • the graphic object is represented as a two-dimensional graph, in particular as a polygon, since such a two-dimensional representation can be taken up very easily by a patient.
  • Such simple geometric shapes, ie polygons are much clearer than superimposed curves that indicate an electrode intensity as a function of time.
  • a high recognizability is given, while at the same time being able to represent a large number of electrode signals.
  • the representation of the will to move facilitates the reproducibility of the contraction pattern.
  • a development of the invention provides that reference objects are displayed on the display device simultaneously with the graphic object. In this way, it is possible to exercise certain target contractions and to give the patient the opportunity to change the current contraction until it matches or comes close to the reference contraction.
  • the reference objects can either be predetermined or stored during previous analysis sessions and used for the parameterization of a prosthesis or orthosis control.
  • Found or established reference contractions or reference patterns are displayed simultaneously with the current contraction pattern, allowing both the patient and an orthopedic mechanic or physician to assess reproducibility and variability. The patient can thereby specifically train his contractions and further differentiate.
  • the visualization of the contraction patterns can be carried out in parallel to an activation of a prosthesis or orthosis, whereby at the same time it can be detected which object triggers which movement on the prosthesis or orthosis.
  • the reference object is displayed in a different color and / or intensity than the graphic object in order to more easily achieve an association between the current contraction and the desired or reference contraction.
  • the reference object and / or the graphic object it is also possible for the reference object and / or the graphic object to be emphasized in terms of color or intensity if the contraction pattern detected corresponds to the reference pattern or approaches it sufficiently. This shows the patient that there is sufficient unambiguousness of the intent to move with the contraction.
  • the display amount can be normalized to clearly and immediately visualize the influence of the contraction intensity on the object shape.
  • signals from myosensors, neurosensors, pressure sensors and / or strain sensors can also be used to detect the motor activity.
  • Figure 1 a first representation of a representation with reference contraction and derived contraction with four electrodes
  • FIG. 2 shows an anatomical interpretation of the electrode arrangement according to FIG. 1; such as
  • FIG. 3 generated reference contractions for eight electrodes.
  • FIG. 1 shows a graphic object 1 which reflects an actual contraction of muscle groups.
  • a graphic object 1 which reflects an actual contraction of muscle groups.
  • Each electrode in each case represents a corner point 2, 3, 4, 5, over which the graphic object 1 of the current contraction is displayed.
  • the graphic object 1 is formed as a quadrangle, wherein each vertex 2, 3, 4, 5 a display direction is assigned.
  • the display directions correspond to crossing axes such that the first electrode is assigned to the axis at 0 ° from the center, the second electrode 3 from the axis at 90 °, the third electrode 4 from the axis at 180 °, and the fourth electrode 5 at 270 °.
  • the respective vertices 2, 3, 4, 5 are connected to each other by lines, so that forms a rectangle as a graphic object 1.
  • the removal of the vertices 2, 3, 4, 5 from the center indicates the intensity of the contraction. If the electrode associated with the first vertex 2 is not supplied with a myoelectric signal, that is, the muscle associated with the electrode is not contracted, the first vertex 2 is at or very close to the midpoint, and if there is an intense contraction, the first vertex 2 moves farther out ,
  • the representation of the derived electrode signals in the form of the graphic object 1 takes place in real time, so that a patient receives the visual feedback on how the current muscle contraction looks on the display device without a time delay.
  • a reference object 10 that is constantly displayed on the display device.
  • This reference object 10 is shown in a different color and / or intensity than the current contraction in the graphic object 1.
  • the current contraction is quite good approximated to the reference object, only the electrode to the first corner 2 has too strong a rash, so that there is too high contraction of the associated muscle.
  • FIG. 2 shows an anatomical interpretation of the illustration described above.
  • Each vertex 2, 3, 4, 5 is associated with an electrode 20, 30, 40, 50, which are attached to a forearm.
  • the arrangement of the electrodes can be seen in the schematic sectional view through the forearm with the corresponding muscles.
  • An object of the invention is to provide a patient-adapted control of a prosthesis or orthosis. This is It is necessary that different contraction patterns are reproducibly detected by the patient, so that, for example, after the mental command "almost bale" a repeatable contraction pattern is generated, which leads to a corresponding prosthesis control, so that a prosthetic hand is closed.
  • Each electrode 20, 30, 40, 50 defines a corner point of the object 1 with its position and signal intensity. All vertices together define the graphical object 1.
  • the object 1 retains its shape for a particular motion or pattern of contraction even if the amounts are alike. It scales only in size. A change in shape takes place when the amounts are not changed evenly.
  • the electrode signals are no longer displayed over time, as is known in the art, reducing the complexity for the viewer. From the prior art it is known to represent the electrode signals by superimposed time graphs. Each graph usually has its own color for better discrimination. Two or three signals can still be detected as contraction patterns, but this becomes much more difficult for larger numbers of signals and electrodes. In addition, no reference contraction can be displayed via time-dependent curves.
  • this object preferably consists of multiple vertices, one vertex for each electrode.
  • This polygon can be interpreted intuitively and at a glance as a pattern of contraction without any technical knowledge, training or other prior knowledge, whereby the will to move receives a visual feedback.
  • the invention gives back to the patient the visible effect of his desire to move, whereby he can adapt and specifically differentiate his action, namely the contraction of the muscles.
  • the allowed Presentation of the evaluation and training of the reproducibility of the contraction pattern so that a reliable classification with a low error rate in the prosthesis control and thus an unprecedented degree of acceptance of the prosthesis or orthosis can be achieved.
  • the spatial positioning of the electrodes takes place in the same sequence as the signal representation, as is the case in FIGS. 1 and 2, it is also possible to draw conclusions about the anatomy.
  • the extent of crosstalk between two adjacent signals can be detected, or contraction patterns can be traced back to their generator muscles on the basis of sectional images.
  • FIG. 3 shows five reference contractions generated on the basis of eight electrodes. Based on these reference contractions, its producer can train its contraction patterns.
  • the presentation of a contraction pattern as a single object enables a patient to evaluate all signals immediately and without technical understanding. From the representation as a single graphic object, the movement intent of the patient can be recognized either directly by the patient himself or by an orthopedic mechanic or a specialist for setting a prosthesis or orthosis control.
  • the object shown is preferably a polygon, but may also be provided as a three-dimensional representation whose shape corresponds to the contraction pattern, that is to say the type of desired movement, and its magnitude of contraction strength, that is, the intensity of muscle tension.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Surgery (AREA)
  • Medical Informatics (AREA)
  • Pathology (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Cardiology (AREA)
  • Transplantation (AREA)
  • Vascular Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Prostheses (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

L'invention concerne un procédé de visualisation de signaux de capteur multicanaux, en particulier de signaux myoélectriques qui sont dérivés par l'intermédiaire d'électrodes d'un membre ou d'un moignon, comprenant les étapes suivantes: une direction d'affichage et une valeur d'affichage sont associées à chaque signal de capteur, la direction d'affichage représente précisément un signal de capteur, la valeur d'affichage représente l'intensité du signal en question, la direction d'affichage et la valeur d'affichage de tous les signaux de capteur sont représentées simultanément en temps réel sur un appareil d'affichage comme un objet graphique.
EP09777033A 2008-08-07 2009-07-08 Procédé de visualisation de signaux multicanaux Withdrawn EP2317910A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008036714A DE102008036714A1 (de) 2008-08-07 2008-08-07 Verfahren zur Visualisierung mehrkanaliger Signale
PCT/EP2009/004935 WO2010015305A1 (fr) 2008-08-07 2009-07-08 Procédé de visualisation de signaux multicanaux

Publications (1)

Publication Number Publication Date
EP2317910A1 true EP2317910A1 (fr) 2011-05-11

Family

ID=41082381

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09777033A Withdrawn EP2317910A1 (fr) 2008-08-07 2009-07-08 Procédé de visualisation de signaux multicanaux

Country Status (4)

Country Link
US (1) US9566016B2 (fr)
EP (1) EP2317910A1 (fr)
DE (1) DE102008036714A1 (fr)
WO (1) WO2010015305A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009030217A1 (de) 2009-06-23 2011-01-05 Otto Bock Healthcare Products Gmbh Verfahren zum Einrichten einer Steuerung und orthopädietechnische Einrichtung
DE102011114920B4 (de) 2011-10-06 2013-06-20 Otto Bock Healthcare Gmbh Protheseneinrichtung
DE102015001967A1 (de) 2015-02-19 2016-08-25 Reinhard VI Müller Steuerbare Vorrichtung,insbesondere steuerbare Prothese, steuerbare Orthese oder steuerbares Implantat
DE102018111241B3 (de) 2018-05-09 2019-08-29 Otto Bock Healthcare Products Gmbh Verfahren zum Einrichten eines myoelektrisch gesteuerten Prothesensystems, Prothesensystem, Oberflächenelektrodenanordnung, Elektrode und Sicherungselement
IT202000023011A1 (it) 2020-09-30 2022-03-30 Bionit Labs S R L Dispositivo protesico a comando mioelettrico e metodo per la calibrazione ed utilizzo di detto dispositivo

Citations (2)

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JP2004024769A (ja) * 2002-06-28 2004-01-29 Tokyo Metropolis 前腕の動作に伴う筋活動の測定方法及びその装置
US20080058668A1 (en) * 2006-08-21 2008-03-06 Kaveh Seyed Momen Method, system and apparatus for real-time classification of muscle signals from self-selected intentional movements

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US5085225A (en) * 1990-05-30 1992-02-04 Trustees Of Boston University Electrode matrix for monitoring back muscles
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EP1240864A1 (fr) 2001-03-13 2002-09-18 Wiltronic AG Dispositif et procédé pour l'entrainement sélective des muscles
EP1252871A1 (fr) * 2001-03-30 2002-10-30 I.N.A.I.L. Centro per la Sperimentazione ed Applicazione di Protesi e Presidi Ortopedici per Gli Informtuni Sul Lavoro Système pour le control et la surveillance des dispositifs fonctionels pour des personnes invalides avec l'énèrgie extérieure du corps humain et procédé pour le contrôle à distance
WO2003005887A2 (fr) * 2001-07-11 2003-01-23 Nuvasive, Inc. Systeme et methodes permettant de determiner la proximite d'un nerf et sa position par rapport a un instrument chirurgical, ainsi que son etat, lors d'une operation chirurgicale
US7563234B2 (en) * 2002-01-29 2009-07-21 Oregon Health & Science University Electromyographic (EMG) feedback during AMES treatment of individuals with severe neuromuscular deficits
JP5184520B2 (ja) * 2006-06-02 2013-04-17 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 バイオフィードバックシステム及びディスプレイデバイス
US7528354B2 (en) 2006-06-05 2009-05-05 Nokia Corporation Method and device for position sensing of an optical component in an imaging system
JP4851298B2 (ja) * 2006-10-31 2012-01-11 富士フイルム株式会社 放射線断層画像生成装置
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Publication number Priority date Publication date Assignee Title
JP2004024769A (ja) * 2002-06-28 2004-01-29 Tokyo Metropolis 前腕の動作に伴う筋活動の測定方法及びその装置
US20080058668A1 (en) * 2006-08-21 2008-03-06 Kaveh Seyed Momen Method, system and apparatus for real-time classification of muscle signals from self-selected intentional movements

Non-Patent Citations (1)

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Title
See also references of WO2010015305A1 *

Also Published As

Publication number Publication date
US9566016B2 (en) 2017-02-14
US20110134139A1 (en) 2011-06-09
WO2010015305A1 (fr) 2010-02-11
DE102008036714A1 (de) 2010-02-11

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