Patents Assigned to Heartstream
  • Defibrillator system condition indicator with an electrode interface
    Patent number: 6075369
    Abstract: A defibrillator and electrode system that gives the user a visible and/or audible indication of the condition of the electrodes and other parts of the defibrillator system prior to deployment of the electrodes and use of the defibrillator. In a preferred embodiment of the method of this invention, a patient simulation and analyze circuit within the defibrillator periodically tests the condition of the system and provides the user with a visual indication of the system's condition.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: June 13, 2000
    Assignee: Heartstream
    Inventor: Carlton B. Morgan
  • Method of using a measuring instrument and data gathering system
    Patent number: 6041257
    Abstract: A method of using a measuring instrument of unknown calibration, the method including taking a measurement with the instrument; storing the measurement in a data storage medium; and correcting the measurement at a later time based on a determination of the amount of error in the measuring instrument. In a specific embodiment, this invention also relates to methods of gathering event data and removing error that may have been present as a result of inaccuracies in the event gathering instrument.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: March 21, 2000
    Assignee: Heartstream
    Inventors: Ian G MacDuff, Daniel J Powers, Clinton S Cole