Patents by Inventor Richard Howard Weitzel

Richard Howard Weitzel 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).

  • ESTIMATING HYDRATION USING CAPILLARY REFILL TIME
    Publication number: 20220313160
    Abstract: An example system for estimating a hydration level of an individual can include: a mechanism configured to apply mechanical pressure to a digit of the individual; an light detector configured to sense the light from the digit; and a controller programmed to perform functions including: send a first signal to the mechanism to apply the mechanical pressure to the digit; send a second signal to the mechanism to release the mechanical pressure on the digit; determine a capillary refill time based upon a third signal from the light detector indicating an amount of time for capillaries of the individual to refill with blood; and estimate the hydration level of the individual based upon the capillary refill time and one or more additional parameters.
    Type: Application
    Filed: May 2, 2022
    Publication date: October 6, 2022
    Inventors: Richard Howard Weitzel, Steven D. Baker, Richard Allen Sunderland, Matthew Lee Hansen, David Clark Sheridan
  • Estimating hydration using capillary refill time
    Patent number: 11344254
    Abstract: An example system for estimating a hydration level of an individual can include: a mechanism configured to apply mechanical pressure to a digit of the individual; an light detector configured to sense the light from the digit; and a controller programmed to perform functions including: send a first signal to the mechanism to apply the mechanical pressure to the digit; send a second signal to the mechanism to release the mechanical pressure on the digit; determine a capillary refill time based upon a third signal from the light detector indicating an amount of time for capillaries of the individual to refill with blood; and estimate the hydration level of the individual based upon the capillary refill time and one or more additional parameters.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: May 31, 2022
    Assignees: Welch Allyn, Inc., Oregon Health & Science University
    Inventors: Richard Howard Weitzel, Steven D. Baker, Richard Allen Sunderland, Matthew Lee Hansen, David Clark Sheridan
  • Estimating Hydration Using Capillary Refill Time
    Publication number: 20170209091
    Abstract: An example system for estimating a hydration level of an individual can include: a mechanism configured to apply mechanical pressure to a digit of the individual; an light detector configured to sense the light from the digit; and a controller programmed to perform functions including: send a first signal to the mechanism to apply the mechanical pressure to the digit; send a second signal to the mechanism to release the mechanical pressure on the digit; determine a capillary refill time based upon a third signal from the light detector indicating an amount of time for capillaries of the individual to refill with blood; and estimate the hydration level of the individual based upon the capillary refill time and one or more additional parameters.
    Type: Application
    Filed: January 13, 2017
    Publication date: July 27, 2017
    Inventors: Richard Howard Weitzel, Steven D. Baker, Richard Allen Sunderland, Matthew Lee Hansen, David Clark Sheridan