Patents by Inventor Bernhard Fahn

Bernhard Fahn 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).

  • Implantable medical device for blood conductivity, blood impedance, and/or hematocrit measurement
    Patent number: 8271085
    Abstract: An implantable medical device has an impedance or admittance determination unit, an alternating current or voltage source, a measuring unit, and an analysis unit which is connected to the alternating current or AC voltage source and the measuring unit to calculate an impedance value or an admittance value at different times. The impedance or admittance determination unit may generate measuring current having two different frequencies (preferably below 100 kHz), and the analysis unit may calculate pairs of impedance or admittance values which are chronologically assigned to one another for different frequencies of the measuring current, and calculate a value for a blood impedance or blood admittance component which is independent of the impedance of the body tissue surrounding a particular blood vessel, The analysis unit may also determine trends in this value over time as an indicator for a change of blood hematocrit value.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: September 18, 2012
    Assignee: Biotronik CRM Patent AG
    Inventors: Michael Lippert, Olaf Skerl, Stefan Paule, Bernhard Fahn, Gerald Czygan, Heinrich Reinke, Albrecht Urbaszek
  • IMPLANTABLE MEDICAL DEVICE
    Publication number: 20080195162
    Abstract: An implantable medical device has an impedance or admittance determination unit, an alternating current or voltage source, a measuring unit, and an analysis unit which is connected to the alternating current or AC voltage source and the measuring unit to calculate an impedance value or an admittance value at different times. The impedance or admittance determination unit may generate measuring current having two different frequencies (preferably below 100 kHz), and the analysis unit may calculate pairs of impedance or admittance values which are chronologically assigned to one another for different frequencies of the measuring current, and calculate a value for a blood impedance or blood admittance component which is independent of the impedance of the body tissue surrounding a particular blood vessel, The analysis unit may also determine trends in this value over time as an indicator for a change of blood hematocrit value.
    Type: Application
    Filed: January 8, 2008
    Publication date: August 14, 2008
    Inventors: Michael Lippert, Olaf Skerl, Stefan Paule, Bernhard Fahn, Gerald Czygan, Heinrich Reinke, Albrecht Urbaszek