Patents by Inventor P. Chad Hodgson

P. Chad Hodgson 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 measuring blood volume
    Patent number: 8603000
    Abstract: In one aspect, a conductance catheter is provided for measuring the volume of a fluid. The conductance catheter comprises a series of electrodes and a circuit to compensate for variations in sensitivity of the electrodes in the catheter. In another aspect, a resistivity sensor is provided for determining the resistivity of a fluid. The sensor comprises a series of electrodes spaced such that the total distance between endmost electrodes does not exceed the diameter of the catheter deploying the sensor.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: December 10, 2013
    Assignee: Transonic Scisense Inc.
    Inventors: Kim Wood, P. Chad Hodgson, Peter Plouf
  • Method and Apparatus for Measuring Blood Volume
    Publication number: 20120220886
    Abstract: In one aspect, a conductance catheter is provided for measuring the volume of a fluid. The conductance catheter comprises a series of electrodes and a circuit to compensate for variations in sensitivity of the electrodes in the catheter. In another aspect, a resistivity sensor is provided for determining the resistivity of a fluid. The sensor comprises a series of electrodes spaced such that the total distance between endmost electrodes does not exceed the diameter of the catheter deploying the sensor.
    Type: Application
    Filed: May 7, 2012
    Publication date: August 30, 2012
    Inventors: Kim Wood, P. Chad Hodgson, Peter Plouf
  • METHOD AND APPARATUS FOR MEASURING BLOOD VOLUME
    Publication number: 20080269581
    Abstract: In one aspect, a conductance catheter is provided for measuring the volume of a fluid. The conductance catheter comprises a series of electrodes and a circuit to compensate for variations in sensitivity of the electrodes in the catheter. In another aspect, a resistivity sensor is provided for determining the resistivity of a fluid. The sensor comprises a series of electrodes spaced such that the total distance between endmost electrodes does not exceed the diameter of the catheter deploying the sensor.
    Type: Application
    Filed: April 23, 2008
    Publication date: October 30, 2008
    Inventors: Kim Wood, P. Chad Hodgson, Peter Plouf