Patents by Inventor Nils Johnson

Nils Johnson 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).

  • A SYSTEM AND METHOD FOR CARDIAC PRESSURE MEASUREMENT
    Publication number: 20220338742
    Abstract: A method for measuring cardiac pressure includes positioning a fluid-filled catheter and a pressure wire sensor at a cardiac pressure calibration location. A first pressure measurement is acquired from the fluid-filled catheter and a second pressure measurement is acquired from the pressure wire sensor. A set of equalization parameters is identified to apply to the first pressure measurement to reduce an error between the first pressure measurement and the second pressure measurement. The equalization parameters include a frequency correction parameter and a damping correction parameter to correct for frequency and damping of oscillations in the first pressure measurement. A third pressure measurement is acquired from the fluid-filled catheter. The set of equalization parameters is applied to equalize the third pressure measurement.
    Type: Application
    Filed: September 25, 2020
    Publication date: October 27, 2022
    Applicant: BOARD OF REGENTS OF THE UNIVERSITY OF TEXAS SYSTEM
    Inventors: Daniel Johnson, Richard L. Kirkeeide, Bernard De Bruyne, K. Lance Gould, Nils Johnson