Patents by Inventor Steffen Leonhardt
Steffen Leonhardt 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).
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Publication number: 20200121207Abstract: A method of processing a signal representing a physiological rhythm of a subject, the method comprising the steps of receiving the signal from the subject, filtering the signal with a band pass filter, extracting an analysis window from the filtered signal, performing a plurality of interval length estimation methods on the filtered signal in the analysis window, summing the outputs of the plurality of interval length estimation methods, and determining an interval length from the sum of the outputs of the plurality of interval length estimation methods.Type: ApplicationFiled: December 19, 2019Publication date: April 23, 2020Inventors: Christoph BRÜSER, Klaus Steffen LEONHARDT
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Patent number: 10495669Abstract: A sensor for a contactless electrocardiographic measurement on a person includes a carrier for fastening the sensor on an object, such as a vehicle seat, and at least one electrically flat electrode mounted to the carrier by an elastic element. An inflatable bellows is disposed between the carrier and the electrode, inflation of the bellows deflecting the elastic element and increasing a distance between the electrode and the carrier to thereby urge the electrode toward a person seated on the seat.Type: GrantFiled: August 22, 2014Date of Patent: December 3, 2019Assignee: Ford Global Technologies, LLCInventors: Jeroen Lem, Benjamin Eilebrecht, Marcel Mathissen, Achim Lindner, Rainer Vogt, Marian Walter, Steffen Leonhardt
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Patent number: 10064568Abstract: 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: GrantFiled: August 8, 2013Date of Patent: September 4, 2018Assignee: DRÄGERWERK AG & CO. KGAAInventors: Tim Baier-Löwenstein, Yvo Gärber, Stefan Mersmann, Eckhard Teschner, Steffen Leonhardt, Robert Pikkemaat
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Patent number: 9468390Abstract: A sensor for contactless electrocardiographic measurement of a person has at least one electrically conductive, planar electrode having a measurement surface facing the person and a connection surface facing away from the person. An electrical terminal for connection with a measurement apparatus is spaced from the connection surface such that the connection surface is only placed in electrical connection with the terminal when pressure of a required magnitude is applied to the measurement. The electrical connection may be achieved by a switching contact disposed between the electrode and the terminal which is brought into contact with both the electrode and the terminal when the electrode is deflected toward the terminal by the pressure. A compressible material is disposed between the electrode and the terminal to allow tuning of the pressure required to achieve electrical contact.Type: GrantFiled: September 26, 2014Date of Patent: October 18, 2016Assignee: Ford Global Technologies, LLCInventors: Benjamin Eilebrecht, Jeroen Lem, Marcel Mathissen, Achim Lindner, Rainer Vogt, Marian Walter, Steffen Leonhardt
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Patent number: 9384549Abstract: A device and a method (100) for the processing of data (501), which were obtained by an imaging method, make possible an improvement in a location-specific visualization of the perfusion of the lung. With a reference to a comparison variable, a location-specific variable (503), characteristic of a period of observation, regarding the perfusion of the lung and heart region, is determined and provided as an output signal.Type: GrantFiled: June 24, 2015Date of Patent: July 5, 2016Assignee: Drägerwerk AG & Co. KGaAInventors: Steffen Leonhardt, Tim Baier-Löwenstein, Stefan Mersmann, Robert Pikkemaat, Eckhard Teschner
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Patent number: 9277882Abstract: A sensor for contactless electrocardiographic measurement on a person includes a carrier for mounting to a seat, an electrode for registering a measurement signal, a pressure sensor supporting the electrode on the carrier, and moisture and temperature sensors mounted to the carrier to detect conditions adjacent to the electrode and the subject person. The moisture sensor and the temperature sensor may be adjacent to at least one opening in the electrode. A processing unit receives information generated by the pressure sensor, the moisture sensor, and the temperature sensor, and filters the measurement signal based on the information. An acceleration sensor may also be mounted to the carrier and/or electrode and send signals to the processor.Type: GrantFiled: August 22, 2014Date of Patent: March 8, 2016Assignee: Ford Global Technologies, LLCInventors: Benjamin Eilebrecht, Jeroen Lem, Marcel Mathissen, Achim Lindner, Rainer Vogt, Marian Walter, Steffen Leonhardt
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Publication number: 20160007870Abstract: A method of processing a signal representing a physiological rhythm of a subject, the method comprising the steps of receiving the signal from the subject, filtering the signal with a band pass filter, extracting an analysis window from the filtered signal, performing a plurality of interval length estimation methods on the filtered signal in the analysis window, summing the outputs of the plurality of interval length estimation methods, and determining an interval length from the sum of the outputs of the plurality of interval length estimation methods.Type: ApplicationFiled: February 25, 2013Publication date: January 14, 2016Inventors: Christoph Brueser, Klaus Steffen Leonhardt
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Measurement method for detecting vital parameters in a human or animal body, and measuring apparatus
Publication number: 20150374257Abstract: A measurement method (1) for detecting vital parameters in a human or animal body, in which, in a detection step (3), a magnetic induction sensor detects an induction measurement sequence which is dependent on a time-varying change in at least one vital parameter, wherein in the detection step (3), a secondary sensor unit simultaneously detects a secondary measurement sequence, the secondary measurement sequence being dependent on an influential variable signal sequence that influences the induction measurement sequence, and in that in a subsequent combination step (4), at least one vital parameter measurement sequence for a vital parameter detected from the induction measurement sequence is calculated from the induction measurement sequence and the secondary measurement sequence using a predefined combination function, so that the detection accuracy of the vital parameter represented in the vital parameter measurement sequence and the induction measurement sequence is improved by combining the induction measType: ApplicationFiled: March 26, 2015Publication date: December 31, 2015Applicant: LIFETAIX GMBHInventors: Daniel TEICHMANN, Steffen LEONHARDT, Marian WALTER, Jerome FOUSSIER, Tobias WARTZEK -
Publication number: 20150379706Abstract: A device and a method (100) for the processing of data (501), which were obtained by an imaging method, make possible an improvement in a location-specific visualization of the perfusion of the lung. With a reference to a comparison variable, a location-specific variable (503), characteristic of a period of observation, regarding the perfusion of the lung and heart region, is determined and provided as an output signal.Type: ApplicationFiled: June 24, 2015Publication date: December 31, 2015Inventors: Steffen LEONHARDT, Tim BAIER-LÖWENSTEIN, Stefan MERSMANN, Robert PIKKEMAAT, Eckhard TESCHNER
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Publication number: 20150216443Abstract: 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: ApplicationFiled: August 8, 2013Publication date: August 6, 2015Inventors: Tim Baier-Löwenstein, Yvo Gärber, Stefan Mersmann, Eckhard Teschner, Steffen Leonhardt, Robert Pikkemaat
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Publication number: 20150094603Abstract: A sensor for contactless electrocardiographic measurement of a person has at least one electrically conductive, planar electrode having a measurement surface facing the person and a connection surface facing away from the person. An electrical terminal for connection with a measurement apparatus is spaced from the connection surface such that the connection surface is only placed in electrical connection with the terminal when pressure of a required magnitude is applied to the measurement. The electrical connection may be achieved by a switching contact disposed between the electrode and the terminal which is brought into contact with both the electrode and the terminal when the electrode is deflected toward the terminal by the pressure. A compressible material is disposed between the electrode and the terminal to allow tuning of the pressure required to achieve electrical contact.Type: ApplicationFiled: September 26, 2014Publication date: April 2, 2015Inventors: Benjamin EILEBRECHT, Jeroen LEM, Marcel MATHISSEN, Achim LINDNER, Rainer VOGT, Marian WALTER, Steffen LEONHARDT
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Publication number: 20150088317Abstract: A sensor for a contactless electrocardiographic measurement of a person includes an electrode formed of a moisture-permeable material and having a measurement surface and an opposite surface. A moisture generator supplies moisture to the opposite surface, and a moisture sensor detects a moisture content of a microclimate at the measurement surface. A controller receives signals from the moisture sensor and activates the moisture generator based upon the signals to control the moisture content. The moisture generator may be a heating element heating a source of moisture; a pump activated pumping liquid from a reservoir to the electrode; an ultrasonic atomizer for atomizing liquid contained in a reservoir; an actuator varying an amount of a liquid-conducting material in contact with liquid contained in a reservoir; or a Peltier element operable to warm and thereby release moisture from a moisture-storing material adjacent to the electrode.Type: ApplicationFiled: September 23, 2014Publication date: March 26, 2015Inventors: Benjamin EILEBRECHT, Lennart LEICHT, Marcel MATHISSEN, Jeroen LEM, Achim LINDNER, Rainer VOGT, Steffen LEONHARDT, Marian WALTER
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Publication number: 20150057556Abstract: A sensor for contactless electrocardiographic measurement on a person includes a carrier for mounting to a seat, an electrode for registering a measurement signal, a pressure sensor supporting the electrode on the carrier, and moisture and temperature sensors mounted to the carrier to detect conditions adjacent to the electrode and the subject person. The moisture sensor and the temperature sensor may be adjacent to at least one opening in the electrode. A processing unit receives information generated by the pressure sensor, the moisture sensor, and the temperature sensor, and filters the measurement signal based on the information. An acceleration sensor may also be mounted to the carrier and/or electrode and send signals to the processor.Type: ApplicationFiled: August 22, 2014Publication date: February 26, 2015Inventors: Benjamin EILEBRECHT, Jeroen LEM, Marcel MATHISSEN, Achim LINDNER, Rainer VOGT, Marian WALTER, Steffen LEONHARDT
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Publication number: 20150054495Abstract: A sensor for a contactless electrocardiographic measurement on a person includes a carrier for fastening the sensor on an object, such as a vehicle seat, and at least one electrically flat electrode mounted to the carrier by an elastic element. An inflatable bellows is disposed between the carrier and the electrode, inflation of the bellows deflecting the elastic element and increasing a distance between the electrode and the carrier to thereby urge the electrode toward a person seated on the seat.Type: ApplicationFiled: August 22, 2014Publication date: February 26, 2015Inventors: Jeroen LEM, Benjamin EILEBRECHT, Marcel MATHISSEN, Achim LINDNER, Rainer VOGT, Marian WALTER, Steffen LEONHARDT
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Patent number: 7711418Abstract: An electroimpedance tomograph including a plurality of electrodes placed on a body, measuring circuits processing voltage signals recorded by the electrodes, and a control unit supplying two electrodes each with an alternating current. The control unit has a preset feed frequency. The control unit processes the processed voltage signals of all other electrodes to reconstruct the impedance distribution of the body in the electrode plane. The control unit provides for an automatic setting of the current feed frequency/frequencies to record a background frequency spectrum by detecting the electrode voltage signals over a preset period of time and record them as a voltage time series and transform them into a frequency spectrum. The control unit searches in the background frequency spectrum for a frequency (different states) or frequencies (different frequencies) that leads to a useful signal to background ratio above a preset threshold value when used as a feed frequency.Type: GrantFiled: June 30, 2004Date of Patent: May 4, 2010Assignee: Dräger Medical AG & Co. KGInventors: Yvo Gärber, Markus Steeger, Jianhua Li, Steffen Leonhardt, Jan Rüterbories, Rainer Goldau
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Patent number: 7315754Abstract: An electrode belt for impedance tomography shall be improved such that it has a simple design and makes possible good contacting of the electrodes (2) with the body of the test subject to be examined. The electrode belt (1) has at least 16 electrodes (2) on an electrode holder or belt material (3), which is elastic at least in some sections. The belt formed of one or more belt material sections completely surrounds a test subject to be examined on the circumference of the body. Electrode feed lines (63) extend along the electrode holder (3). The electrode feed lines and are connected to a feed line (6) at least at one feed point (4) on the electrode holder (3).Type: GrantFiled: January 27, 2004Date of Patent: January 1, 2008Assignee: Dräger Medical AG & Co. KGaAInventors: Steffen Leonhardt, Eckhard Teschner, Markus Hampe, Hans-Wilhelm Steen, Jianhua Li, Karsten Hoffmann, Yvo Gärber, Hans Matthiessen, Rainer Degenhart, Dieter Sahmkow
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Patent number: 7286863Abstract: A device is provided for putting an electrode carrier on a recumbent patient. The device includes a first lifting cushion that supports the shoulder region and the head of the patient at the same time and into which a pressurized medium can be admitted. A second lifting cushion is provided that supports the lumbar region and into which pressurized medium can be admitted. A spacer is provided fixing the lifting cushions in relation to one another in the chest region.Type: GrantFiled: May 20, 2004Date of Patent: October 23, 2007Assignee: Dräger Medical AG & Co. KGaAInventors: Steffen Leonhardt, Eckhard Teschner, Dieter Sahmkow, Hans-Wilhelm Steen, Hans Matthiessen, Yvo Gärber, Karsten Hoffmann, Jianhua Li, Rainer Degenhart, Markus Hampe
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Patent number: 7162296Abstract: A ventilation system (1, 10) is combined with a measuring method (2, 22, 222) for electric impedance tomography (EIT). Bidirectional data exchange between the two systems is provided. Both the ventilation system (1, 10) and the measuring system (2, 22, 222) have a first and second communications electronic unit (11, 12) each with associated transmitting and receiving means for the bidirectional data exchange.Type: GrantFiled: December 18, 2003Date of Patent: January 9, 2007Assignee: Dräger Medical AG & Co KGaAInventors: Steffen Leonhardt, Eckhard Teschner
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Patent number: 6885881Abstract: Device for measuring human blood sugar levels with a catheter, the free end of which is positioned in a blood vessel, wherein the catheter consists of at least one optical waveguide comprising a light source for coupling light into the at least one optical waveguide, a measurement point at the free end of the catheter at which point the light is emitted from the at least one optical waveguide, wherein the light is dispersed by the blood and/or transmitted by the blood and wherein the dispersed and/or transmitted light is coupled again into the minimum of one return optical waveguide, a detector to receive the light which is returned, and a computer unit for analysing the light received by the detector.Type: GrantFiled: January 8, 2002Date of Patent: April 26, 2005Inventor: Steffen Leonhardt
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Patent number: RE40402Abstract: The invention relates to a method and an apparatus to identify alveolar opening and collapse of a lung. To automatically generate the settings of ventilator parameters in a simple and gentle way, the hemoglobin oxygen saturation and/or the endtidal CO2 concentration and/or the CO2 output are-measured and processing to detect alveolar opening and closing. From the knowledge of the corresponding airway pressures, a central processing unit may generate the settings of ventilation parameters such that gas exchange is maximal while the mechanical stress of the lung tissue is minimal.Type: GrantFiled: January 25, 2006Date of Patent: June 24, 2008Assignee: Maquet Critical Care ABInventors: Steffen Leonhardt, Stephan Böhm