Patents by Inventor Keyvan Hashtrudi-Zaad

Keyvan Hashtrudi-Zaad 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).

  • Methods and apparatus for improved electromagnetic tracking and localization
    Patent number: 10285760
    Abstract: An apparatus for electromagnetic (EM) tracking or localization is described which includes one or more EM transmitters and receivers (sensors, or trackers), an indication of relative locations of the one or more transmitter and sensor with respect to one or more instrument, optionally, a model of the one or more instrument flexibility, a measurement uncertainty analyzer that reports an uncertainty associated with each measurement, an equation of motion or dynamic model with motion constraints that describes an expected behavior of the one or more instrument, a probabilistic simultaneous localization and mapping (SLAM) algorithm that simultaneously estimates a pose of one or more instrument and updates a field distortion map, or parameters of a field distortion model, a field distortion estimator that uses currently-available information of the field distortion map and estimates field distortion in the vicinity of the one or more instrument, to be used for future measurement compensation, a transient analyzer
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: May 14, 2019
    Assignee: Queen's University at Kingston
    Inventors: Hossein Sadjadi, Elodie Lugez, Keyvan Hashtrudi-Zaad, Gabor Fichtinger
  • Methods and Apparatus for Improved Electromagnetic Tracking and Localization
    Publication number: 20160258782
    Abstract: An apparatus for electromagnetic (EM) tracking or localization is described which includes one or more EM transmitters and receivers (sensors, or trackers), an indication of relative locations of the one or more transmitter and sensor with respect to one or more instrument, optionally, a model of the one or more instrument flexibility, a measurement uncertainty analyzer that reports an uncertainty associated with each measurement, an equation of motion or dynamic model with motion constraints that describes an expected behavior of the one or more instrument, a probabilistic simultaneous localization and mapping (SLAM) algorithm that simultaneously estimates a pose of one or more instrument and updates a field distortion map, or parameters of a field distortion model, a field distortion estimator that uses currently-available information of the field distortion map and estimates field distortion in the vicinity of the one or more instrument, to be used for future measurement compensation, a transient analyzer
    Type: Application
    Filed: February 4, 2016
    Publication date: September 8, 2016
    Inventors: Hossein Sadjadi, Elodie Lugez, Keyvan Hashtrudi-Zaad, Gabor Fichtinger