Patents by Inventor Stefan Merkel

Stefan Merkel 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: 8380285
    Abstract: The method is related to control a measurement of a magnetic resonance device based on electrocardiogram signals of a patient detected by at least two channels. The method comprises the steps of: supplying the electrocardiogram signals in a first processing branch to a low pass filter and a derived value sum generator; comparing the output signal with a threshold value to generate a first comparison result; feeding the electrocardiogram signals in a second processing branch to a derived value generator; comparing said signals with an upper and a lower threshold value to generate a second comparison result; repeat the above steps for the second and if necessary further channels; evaluating all first and second comparison results for all channels in a weighted logic circuit; and triggering the measurement as a function of the result of the weighted logic circuit.
    Type: Grant
    Filed: December 11, 2007
    Date of Patent: February 19, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Frank, Stefan Merkel, Ernst Mustafa, Helmut Wrobel
  • Patent number: 7702376
    Abstract: Method for ECG triggering a measuring sequence of a magnetic resonance device, with ECG signals of a patient being detected over two channels, with the triggering of the measuring sequence being carried out when the ECG signal of at least one channel, said ECG signal being subjected to a digital signal processing, exceeds a threshold value, and at the same time the derivation of the ECG signal or the norm of the derivation of the ECG signal lies within a defined interval in both channels.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: April 20, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Michael Frank, Stefan Merkel, Ernst Mustafa, Helmut Wrobel
  • Publication number: 20080139926
    Abstract: The method is related to control a measurement of a magnetic resonance device based on electrocardiogram signals of a patient detected by at least two channels. The method comprises the steps of: supplying the electrocardiogram signals in a first processing branch to a low pass filter and a derived value sum generator; comparing the output signal with a threshold value to generate a first comparison result; feeding the electrocardiogram signals in a second processing branch to a derived value generator; comparing said signals with an upper and a lower threshold value to generate a second comparison result; repeat the above steps for the second and if necessary further channels; evaluating all first and second comparison results for all channels in a weighted logic circuit; and triggering the measurement as a function of the result of the weighted logic circuit.
    Type: Application
    Filed: December 11, 2007
    Publication date: June 12, 2008
    Inventors: Michael Frank, Stefan Merkel, Ernst Mustafa, Helmut Wrobel
  • Publication number: 20070167737
    Abstract: Method for ECG triggering a measuring sequence of a magnetic resonance device, with ECG signals of a patient being detected over two channels, with the triggering of the measuring sequence being carried out when the ECG signal of at least one channel, said ECG signal being subjected to a digital signal processing, exceeds a threshold value, and at the same time the derivation of the ECG signal or the norm of the derivation of the ECG signal lies within a defined interval in both channels.
    Type: Application
    Filed: May 25, 2006
    Publication date: July 19, 2007
    Inventors: Michael Frank, Stefan Merkel, Ernst Mustafa, Helmut Wrobel
  • Publication number: 20060178574
    Abstract: ECG electrode arrangement for MR applications in alternating magnetic fields, in particular triggering with MR applications, with a correction loop being provided, which is practically congruent with each measuring loop made of electrode supply lines and insulated therefrom, the induction voltage with reverse polarity of which overlays the output voltage of the measuring loop.
    Type: Application
    Filed: February 2, 2006
    Publication date: August 10, 2006
    Inventors: Daniel Fischer, Werner Lindstedt, Stefan Merkel