Patents by Inventor Wilhelm J. Kaiser

Wilhelm J. Kaiser 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).

  • Method and apparatus for reducing noise and detecting electrode faults in medical equipment
    Patent number: 6974420
    Abstract: A method and apparatus for reducing noise and detecting electrode faults in a physiological activity acquisition system. The method includes the act of delivering a carrier signal through an electrode connected to a subject. Once the carrier signal is delivered, a combined signal having an electrical-activity portion and a carrier-signal portion is sensed by at least one signal sensing electrode attached to the subject. A low-pass, finite impulse response filter, having a first zero point frequency substantially the same as the carrier signal, separates the carrier signal portion from the electrical activity portion. An impedance value for the sensing electrode is calculated using the carrier signal portion. The calculated impedance value is compared against a known value to determine whether an electrode fault exists.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: December 13, 2005
    Assignee: GE Medical Systems Information Technologies, Inc.
    Inventors: Wilhelm J. Kaiser, Horst Weber, Wolfgang Winter
  • Method and apparatus for reducing noise and detecting electrode faults in medical equipment
    Publication number: 20020183797
    Abstract: A method and apparatus for reducing noise and detecting electrode faults in a physiological activity acquisition system. The method includes the act of delivering a carrier signal through an electrode connected to a subject. Once the carrier signal is delivered, a combined signal having an electrical-activity portion and a carrier-signal portion is sensed by at least one signal sensing electrode attached to the subject. A low-pass, finite impulse response filter, having a first zero point frequency substantially the same as the carrier signal, separates the carrier signal portion from the electrical activity portion. An impedance value for the sensing electrode is calculated using the carrier signal portion. The calculated impedance value is compared against a known value to determine whether an electrode fault exists.
    Type: Application
    Filed: July 22, 2002
    Publication date: December 5, 2002
    Applicant: GE Medical Systems Information Technologies, Inc.
    Inventors: Wilhelm J. Kaiser, Horst Weber, Wolfgang Winter
  • Method and apparatus for reducing noise and detecting electrode faults in medical equipment
    Patent number: 6487449
    Abstract: A system and apparatus for detecting electrode faults in a physiological activity acquisition system or device. The system includes at least one signal sensing electrode attached to the subject and a signal processor coupled to the at least one signal sensing electrode. The signal sensing electrode senses a combined signal from the subject. The combined signal has an activity portion and a carrier portion. The signal processor receives the combined signal from the electrode. The signal processor processes the combined signal and generates a noise-redeuced ECG and an electrode fault signal, if an electrode fault exists.
    Type: Grant
    Filed: May 23, 2000
    Date of Patent: November 26, 2002
    Assignee: GE Medical Systems Information Technologies, Inc.
    Inventors: Wilhelm J. Kaiser, Horst Weber, Wolfgang Winter