Patents by Inventor Yvo Gärber

Yvo Gärber has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10285619
    Abstract: An electrical impedance tomography device includes a plurality of electrodes, a display apparatus, and a control and evaluation unit for reconstructing a matrix of image elements, a spatial distribution of impedance changes in an electrode plane, from measurement signals with a reconstruction algorithm. A time series of matrices are provided from an inhalation and an exhalation that follow. The control unit detects a local impedance change, as a function of a quantity monotonically dependent on average alveolar pressure, as inhalation and exhalation curves from the time series of matrices, to calculate a parameter representing the deviation between the inhalation and exhalation curves as a dissipation value of the image element and to associate the parameter with the image element, to combine the dissipation values of all examined image elements in a dissipation map, and to display the dissipation values with graphical codings dependent on dissipation values of the dissipation map.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: May 14, 2019
    Assignee: Drägerwerk AG & Co. KGaA
    Inventor: Yvo Gärber
  • Publication number: 20190038173
    Abstract: A device (10) determines difference parameters (300, 400), such as end-expiratory impedance values, on the basis of electrical impedance tomography (EIT) data (36) of regions of the lungs of a living being. The EIT data (36) are obtained by an electrical impedance tomography apparatus (30). A quantitative evaluation of changes in regions of the lungs in terms of hyperdistension or collapsing is provided based on the determined difference parameters (300, 400).
    Type: Application
    Filed: July 25, 2018
    Publication date: February 7, 2019
    Inventor: Yvo GÄRBER
  • Patent number: 10064568
    Abstract: A device for determining the regional distribution of a parameter for lung perfusion includes an electrical impedance tomography unit with electrodes (E1, . . . EN), which can be placed on the thorax, that are connected to a control and analysis unit (2) and an administering device (4) for the intravenous administration of a conductivity contrast medium. The control and analysis unit (2) is configured to display changes in impedance distribution occurring as a consequence of the administration of conductivity contrast medium as a parameter for lung perfusion in the section plane as a function of time. The administering device (4) has a controllable dispensing device. The control and analysis unit and the dispensing device are connected with one another via a data link (3). A start time and an end time and a quantity of an administered bolus of the conductivity contrast medium are available to the control and analysis unit (2).
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: September 4, 2018
    Assignee: DRÄGERWERK AG & CO. KGAA
    Inventors: Tim Baier-Löwenstein, Yvo Gärber, Stefan Mersmann, Eckhard Teschner, Steffen Leonhardt, Robert Pikkemaat
  • Patent number: 10013769
    Abstract: A device (10) for processing data (3), which were obtained from a medical device suitable for imaging the lungs or the thorax, particularly an electrical impedance tomography device (30), provides improved visualization of a three-dimensional thoracic dimension (350) of the lungs. A characteristic contour (34, 350) is determined continuously by continuous reference to a previously determined outer contour (905) of the lungs as a comparison variable and is outputted, provided and visualized as an output signal (35).
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: July 3, 2018
    Assignee: Drägerwerk AG & Co. KGaA
    Inventor: Yvo Gärber
  • Publication number: 20180146881
    Abstract: An electrical impedance tomography device (1) includes an electrode array, including a plurality of electrodes (33) arranged spaced apart from one another, a signal feed unit (51) and a signal acquisition unit (50). A calculation and control unit (70) is configured to determine a situation with an axial twist angle of the electrode array on a thorax (34) of a human being and to provide a control signal (79), which indicates the situation with axial twist angle of the electrode array. The calculation and control unit (70) may be configured as a central unit or an array of distributed units (cloud computing) in order to determine and to provide the axial twist angle.
    Type: Application
    Filed: November 29, 2017
    Publication date: May 31, 2018
    Inventor: Yvo GÄRBER
  • Publication number: 20180146882
    Abstract: An electrical impedance tomography device (1) includes an electrode array, including a plurality of electrodes (33) arranged spaced apart from one another, a signal feed unit (51) and a signal acquisition unit (50). A calculation and control unit (70) is configured to determine a current elliptical circumferential shape (20?) of the electrode array on a thorax (34) of a human being and to provide a control signal (79), which indicates the elliptical circumferential shape (20) of the electrode array. The calculation and control unit (70) may be configured as a central unit or an array of distributed units (cloud computing) in order to determine and to provide the current elliptical circumferential shape (20?).
    Type: Application
    Filed: November 29, 2017
    Publication date: May 31, 2018
    Inventor: Yvo GÄRBER
  • Publication number: 20180078168
    Abstract: A great device (10) processes and visualizes electrical impedance tomography (EIT) data (3) of at least one region of the lungs for determining and visualizing regional properties of the lungs of a living being. The EIT data (3) are obtained from an electrical impedance tomography apparatus (30). The device makes it possible to visualize regional properties of the lungs or of regions of the lungs in terms of hyperdistension or collapse.
    Type: Application
    Filed: September 15, 2017
    Publication date: March 22, 2018
    Inventor: Yvo GÄRBER
  • Patent number: 9872632
    Abstract: An electric impedance tomography device with chest electrodes, a display and a control and analyzing unit to determine a time series of a global ventilation curve from the sequence of reconstructed matrices as a time series of the mean impedance change or of a measured respiration volume, to divide an inspiration or expiration phase into a number of steps of equal volume change, to determine the times corresponding to these steps, to determine the change in local impedance between these times for each image element, the ratio of this local change in impedance to the global ventilation curve to form a local sequence of relative impedance changes of the image element as a function of the steps of equal volume change, to determine a scalar indicator characteristic as a function of the steps of equal volume change and to display each image element based on the respective scalar indicator.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: January 23, 2018
    Assignee: Draegerwerk AG & Co. KGaA
    Inventors: Yvo Gärber, Ola Stenqvist
  • Patent number: 9730607
    Abstract: An EIT device has a plurality of electrodes (4) that can be arranged on a body in order to reconstruct the impedance distribution of the body with a reconstruction algorithm. The control unit (10) of the EIT device is set up by suitable programming to continuously determine at least one property (e1, . . . , eM) each from the measured signals (U1, . . . , UM) of all measuring channels and to correct measured signals of the measuring channels on the basis of the properties or to adapt the reconstruction algorithm on the basis of the properties.
    Type: Grant
    Filed: June 12, 2012
    Date of Patent: August 15, 2017
    Assignee: DRÄGERWERK AG & CO. KGaA
    Inventor: Yvo Gärber
  • Publication number: 20160354007
    Abstract: A device (10) processes and visualizes EIT data (3) of at least one region of the lungs to determine and visualize ventilation delays in the lungs of a living being. The EIT data (3) are obtained from an electrical impedance tomography apparatus (30). The device makes it possible to visualize regional ventilation delays of the lungs or of regions of the lungs in which the delay exceeds a predefined duration (76) in a joint image (900).
    Type: Application
    Filed: June 2, 2016
    Publication date: December 8, 2016
    Inventor: Yvo GÄRBER
  • Publication number: 20160235333
    Abstract: An electrical impedance tomography device includes a plurality of electrodes, a display apparatus, and a control and evaluation unit for reconstructing a matrix of image elements, a spatial distribution of impedance changes in an electrode plane, from measurement signals with a reconstruction algorithm. A time series of matrices are provided from an inhalation and an exhalation that follow. The control unit detects a local impedance change, as a function of a quantity monotonically dependent on average alveolar pressure, as inhalation and exhalation curves from the time series of matrices, to calculate a parameter representing the deviation between the inhalation and exhalation curves as a dissipation value of the image element and to associate the parameter with the image element, to combine the dissipation values of all examined image elements in a dissipation map, and to display the dissipation values with graphical codings dependent on dissipation values of the dissipation map.
    Type: Application
    Filed: September 24, 2014
    Publication date: August 18, 2016
    Applicant: DRÄGERWERK AG & CO. KGAA
    Inventor: Yvo GÄRBER
  • Publication number: 20160163062
    Abstract: A device (10) for processing data (3), which were obtained from a medical device suitable for imaging the lungs or the thorax, particularly an electrical impedance tomography device (30), provides improved visualization of a three-dimensional thoracic dimension (350) of the lungs. A characteristic contour (34, 350) is determined continuously by continuous reference to a previously determined outer contour (905) of the lungs as a comparison variable and is outputted, provided and visualized as an output signal (35).
    Type: Application
    Filed: December 8, 2015
    Publication date: June 9, 2016
    Inventor: Yvo GÄRBER
  • Publication number: 20150216443
    Abstract: A device for determining the regional distribution of a parameter for lung perfusion includes an electrical impedance tomography unit with electrodes (E1, . . . EN), which can be placed on the thorax, that are connected to a control and analysis unit (2) and an administering device (4) for the intravenous administration of a conductivity contrast medium. The control and analysis unit (2) is configured to display changes in impedance distribution occurring as a consequence of the administration of conductivity contrast medium as a parameter for lung perfusion in the section plane as a function of time. The administering device (4) has a controllable dispensing device. The control and analysis unit and the dispensing device are connected with one another via a data link (3). A start time and an end time and a quantity of an administered bolus of the conductivity contrast medium are available to the control and analysis unit (2).
    Type: Application
    Filed: August 8, 2013
    Publication date: August 6, 2015
    Inventors: Tim Baier-Löwenstein, Yvo Gärber, Stefan Mersmann, Eckhard Teschner, Steffen Leonhardt, Robert Pikkemaat
  • Publication number: 20140221806
    Abstract: An EIT device with a plurality of electrodes, which can be arranged about the chest of a patient, with a control and analyzing unit for feeding electrode pairs of a set of electrodes to record a voltage or current signal as a measured signal with electrode pairs acting consecutively as the feeding electrode pair to provide a matrix of image elements. A time series of the impedance change from the sequence of reconstructed matrices over at least one inspiration and one expiration is obtained and compared to a determined time series of the mean impedance change or a time series of a measured respiration volume, by calculating for each image element a scalar value as an indicator of a deviation. The control and analyzing unit assesses and marks the corresponding image element as being non-ventilated if the indicator of the deviation meets a preset threshold value criterion.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 7, 2014
    Applicant: Dräger Medical GmbH
    Inventor: Yvo GÄRBER
  • Publication number: 20140221864
    Abstract: An EIT device with a plurality of electrodes, which can be arranged about the chest of a patient, with a control and analyzing unit for feeding electrode pairs of a set of electrodes to record a voltage or current signal as a measured signal with electrode pairs acting consecutively as the feeding electrode pair to provide a matrix of image elements. A time series of the impedance change from the sequence of reconstructed matrices over at least one breath is obtained and compared to a determined time series of the mean impedance change or a time series of a measured respiration volume, by calculating for each image element a scalar value as an indicator of a deviation. The control and analyzing unit assesses and marks the corresponding image element as being non-ventilated if the indicator of the deviation meets a preset threshold value criterion.
    Type: Application
    Filed: July 16, 2013
    Publication date: August 7, 2014
    Inventor: Yvo GÄRBER
  • Publication number: 20140221865
    Abstract: An electric impedance tomography device with chest electrodes, a display and a control and analyzing unit to determine a time series of a global ventilation curve from the sequence of reconstructed matrices as a time series of the mean impedance change or of a measured respiration volume, to divide an inspiration or expiration phase into a number of steps of equal volume change, to determine the times corresponding to these steps, to determine the change in local impedance between these times for each image element, the ratio of this local change in impedance to the global equal volume change to form a local sequence of relative impedance changes of the image element as a function of the steps of equal volume change, to determine a scalar indicator characteristic as a function of the steps of equal volume change and to display each image element based on the respective scalar indicator.
    Type: Application
    Filed: February 4, 2014
    Publication date: August 7, 2014
    Applicant: Dräger Medical GmbH
    Inventors: Yvo GÄRBER, Ola STENQVIST
  • Publication number: 20130002264
    Abstract: An EIT device has a plurality of electrodes (4) that can be arranged on a body in order to reconstruct the impedance distribution of the body with a reconstruction algorithm. The control unit (10) of the EIT device is set up by suitable programming to continuously determine at least one property (e1, . . . , eM) each from the measured signals (U1, . . . , UM) of all measuring channels and to correct measured signals of the measuring channels on the basis of the properties or to adapt the reconstruction algorithm on the basis of the properties.
    Type: Application
    Filed: June 12, 2012
    Publication date: January 3, 2013
    Applicant: DRÄGER MEDICAL GMBH
    Inventor: Yvo GÄRBER
  • Publication number: 20120238896
    Abstract: A method for electroimpedance tomography makes possible an analysis and reconstruction of an image of the electric resistance in the presence of a defect electrode (A). The method includes the steps of identifying an electrode as a defect electrode (A), which has no contact with the body, by means of an impedance measurement, of performing current feeds such that at least the defect electrode (A) is jumped over, and of determining voltage potentials in the area of the defect electrode (A) over the defect electrode (A) in such a way that the defect electrode (A) is jumped over at least once.
    Type: Application
    Filed: February 3, 2012
    Publication date: September 20, 2012
    Applicant: Drager Medical GmbH
    Inventors: Yvo Gärber, Thomas Gallus
  • Patent number: 7941210
    Abstract: An electroimpedance tomograph with a plurality of electrodes (1) is provided, which can be placed on the body of a patient and are connected via a selector switch (60) with a control and evaluating unit (20). The control and evaluating unit (20) cooperates with the selector switch (60) such that two electrodes each are supplied with an alternating current from an AC power source (22) and the detected analog voltage signals of the other electrodes are processed in order to reconstruct therefrom the impedance distribution of the body in the plane of the electrodes, wherein a symmetrical AC power source is used to reduce common-mode signals.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: May 10, 2011
    Assignee: Dräger Medical GmbH
    Inventors: Hans Matthiessen, Dieter Weismann, Jianhua Li, Yvo Gärber, Arndt Pöcher, Markus Steeger
  • Publication number: 20100185107
    Abstract: A cable for electromedical application and especially for recording the ECG of patients of different body shapes and body sizes is provided including a textile composite (1) formed of a carrier layer (2) and a cover layer (3). At least one electric line (4) is accommodated between the carrier layer (2) and the cover layer (3). After manufacture in a cost-effective manner, the cable offers sufficient protection against short circuits in case of penetration of moisture, on the one hand, and adapts to curved and irregularly shaped structures without problems, on the other hand. The cable textile composite (1) is flexibly deformable without destruction, wherein at least one electric line (4) is electrically insulated by an insulation (5) against the carrier layer (2) and the cover layer (3).
    Type: Application
    Filed: January 15, 2010
    Publication date: July 22, 2010
    Inventors: Thomas GRASSL, Torge WALL, Thomas GALLUS, Yvo GÄRBER, Christian BULLMANN, Hans-Ullrich HANSMANN, Hartmut STARK, Frank SATTLER, Henning GERDER