Patents by Inventor William F. Walker

William F. Walker 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).

  • Publication number: 20240001302
    Abstract: A system and method for enhancing transport of matter between two media. The system includes a membrane separating the two media wherein the first media contacts at least one surface area of the membrane. Further included is a transducer configured to direct acoustic energy into the first medium proximate the at least one surface area of the membrane. In this manner, the system accelerates transport of the matter from the first to the second media.
    Type: Application
    Filed: December 1, 2021
    Publication date: January 4, 2024
    Inventors: Saibal BANDYOPADHYAY, William F. WALKER, Andrew K. JONES
  • Publication number: 20230380414
    Abstract: Disclosed herein are devices, apparatuses, and/or systems for delivering aerosolized fluorocarbons (FCs). The systems can include a container, an aerosolizer, and an introduction assembly. The aerosolizer can be fluidically coupled to the container and configured to aerosolize fluids from the container. The introduction assembly can be fluidically coupled to the aerosolizer and configured to introduce aerosolized fluids into the pulmonary tissue of a subject. Methods include aerosolizing a FC using an aerosolizer, delivering the FC to the pulmonary tissue of the subject, and contacting the pulmonary tissue of the subject with the FC. Some embodiments include cooling the pulmonary tissue. Cooling the pulmonary tissue can provide a therapeutic benefit to a living subject or it can preserve the pulmonary tissue of a deceased subject for transplantation.
    Type: Application
    Filed: October 12, 2021
    Publication date: November 30, 2023
    Inventors: Andrew K. JONES, Saibal BANDYOPADHYAY, William F. WALKER
  • Publication number: 20230358711
    Abstract: A device for estimating a mechanical property of a sample is disclosed herein. The device may include a chamber configured to hold the sample; a transmitter configured to transmit a plurality of waveforms, including at least one forcing waveform; and a transducer assembly operatively connected to the transmitter and configured to transform the transmit waveforms into ultrasound waveforms. The transducer assembly can also transmit and receive ultrasound waveforms into and out of the chamber, as well as transform at least two received ultrasound waveforms into received electrical waveforms.
    Type: Application
    Filed: April 13, 2023
    Publication date: November 9, 2023
    Inventors: William F. Walker, F. Scott Corey, Andrew Homyk, Tim Higgins, Francesco Viola, Frank Regan, Elisa Ferrante
  • Publication number: 20230358725
    Abstract: An integrated system for determining a hemostasis and oxygen transport parameter of a blood sample, such as blood, is disclosed. The system includes a measurement system, such as an ultrasonic sensor, configured to determine data characterizing the blood sample. For example, the data could be displacement of the blood sample in response to ultrasonic pulses. An integrated aspect of the system may be a common sensor, sample portion or data for fast and efficient determination of both parameters. The parameters can also be used to correct or improve measured parameters. For example, physiological adjustments may be applied to the hemostatic parameters using a HCT measurement. Also, physical adjustments may be applied, such as through calibration using a speed or attenuation of the sound pulse through or by the blood sample. These parameters may be displayed on a GUI to guide treatment.
    Type: Application
    Filed: May 31, 2023
    Publication date: November 9, 2023
    Inventors: Francesco Viola, William F. Walker
  • Patent number: 11680940
    Abstract: An integrated system for determining a hemostasis and oxygen transport parameter of a blood sample, such as blood, is disclosed. The system includes a measurement system, such as an ultrasonic sensor, configured to determine data characterizing the blood sample. For example, the data could be displacement of the blood sample in response to ultrasonic pulses. An integrated aspect of the system may be a common sensor, sample portion or data for fast and efficient determination of both parameters. The parameters can also be used to correct or improve measured parameters. For example, physiological adjustments may be applied to the hemostatic parameters using a HCT measurement. Also, physical adjustments may be applied, such as through calibration using a speed or attenuation of the sound pulse through or by the blood sample. These parameters may be displayed on a GUI to guide treatment.
    Type: Grant
    Filed: November 30, 2020
    Date of Patent: June 20, 2023
    Assignee: HemoSonics LLC
    Inventors: Francesco Viola, William F. Walker
  • Patent number: 11656206
    Abstract: A device for estimating a mechanical property of a sample is disclosed herein. The device may include a chamber configured to hold the sample; a transmitter configured to transmit a plurality of waveforms, including at least one forcing waveform; and a transducer assembly operatively connected to the transmitter and configured to transform the transmit waveforms into ultrasound waveforms. The transducer assembly can also transmit and receive ultrasound waveforms into and out of the chamber, as well as transform at least two received ultrasound waveforms into received electrical waveforms.
    Type: Grant
    Filed: February 25, 2021
    Date of Patent: May 23, 2023
    Assignee: HEMOSONICS LLC
    Inventors: William F. Walker, F. Scott Corey, Andrew Homyk, Tim Higgins, Francesco Viola, Frank Regan, Elisa Ferrante
  • Publication number: 20230118968
    Abstract: A system for displaying a plurality of hemostatic indexes is disclosed. The system includes a communication receiver configured to receive the hemostatic indexes and a graphical user interface (GUI) connected to the communication receiver and configured to simultaneously display the hemostatic indexes. The hemostatic indexes are derived from a plurality of independent measurements, such as the mechanical measurements determined using the sonorheometry systems and processes.
    Type: Application
    Filed: September 26, 2022
    Publication date: April 20, 2023
    Inventors: Francesco Viola, William F. Walker, Gregory V. Browne, Adam Looker, Bryan Roy, Bjarne Hansen
  • Publication number: 20230020682
    Abstract: A disposable system, in some embodiments, includes a multi-channel or multi-chamber test cartridge device configured to operate with a testing system for evaluation of hemostasis in a subject by in vitro evaluation of a test sample from the subject. The disposable system, in some embodiments, is configured to interrogate the test sample to evaluate clot stiffness, strength, or other mechanical properties of the test sample to assess the function of various physiological processes occur during coagulation and/or dissolution of the resulting clot.
    Type: Application
    Filed: June 17, 2022
    Publication date: January 19, 2023
    Inventors: Francesco Viola, Timothy Higgins, Andrew Homyk, F. Scott Corey, Franklin F. Regan, IV, William F. Walker, David Bryant, Thomas Givens, Cynthia Ann Lloyd
  • Patent number: 11456071
    Abstract: A system for displaying a plurality of hemostatic indexes is disclosed. The system includes a communication receiver configured to receive the hemostatic indexes and a graphical user interface (GUI) connected to the communication receiver and configured to simultaneously display the hemostatic indexes. The hemostatic indexes are derived from a plurality of independent measurements, such as the mechanical measurements determined using the sonorheometry systems and processes.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: September 27, 2022
    Assignee: HemoSonics LLC
    Inventors: Francesco Viola, William F. Walker, Gregory V. Browne, Adam Looker, Bryan Roy, Bjarne Hansen
  • Patent number: 11366093
    Abstract: A disposable system, in some embodiments, includes a multi-channel or multi-chamber test cartridge device configured to operate with a testing system for evaluation of hemostasis in a subject by in vitro evaluation of a test sample from the subject. The disposable system, in some embodiments, is configured to interrogate the test sample to evaluate clot stiffness, strength, or other mechanical properties of the test sample to assess the function of various physiological processes occur during coagulation and/or dissolution of the resulting clot.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: June 21, 2022
    Assignee: HEMOSONICS, LLC
    Inventors: Francesco Viola, Timothy Higgins, Andrew Homyk, F. Scott Corey, Franklin F. Regan, William F. Walker, David Bryant, Thomas Givens, Cynthia Ann Lloyd
  • Patent number: 11054396
    Abstract: Provided are devices, systems and methods for the use of a portable unit for the evaluation of hemostasis. For example, a portable system for determining a plurality of hemostatic parameters may be included. The system includes a blood sample receptacle, an analyzer and a housing. The blood sample receptacle is configured to hold at least one blood sample. The analyzer is configured to determine at least two hemostatic parameters of the at least one blood sample. The housing is configured to operably couple the blood sample receptacle and the analyzer. The housing is portable and may, for example, have a thickness of 17.5 cm or smaller.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: July 6, 2021
    Assignee: HEMOSONICS LLC
    Inventors: Francesco Viola, William F. Walker
  • Publication number: 20210199622
    Abstract: A device for estimating a mechanical property of a sample is disclosed herein. The device may include a chamber configured to hold the sample; a transmitter configured to transmit a plurality of waveforms, including at least one forcing waveform; and a transducer assembly operatively connected to the transmitter and configured to transform the transmit waveforms into ultrasound waveforms. The transducer assembly can also transmit and receive ultrasound waveforms into and out of the chamber, as well as transform at least two received ultrasound waveforms into received electrical waveforms.
    Type: Application
    Filed: February 25, 2021
    Publication date: July 1, 2021
    Inventors: William F. Walker, F. Scott Corey, Andrew Homyk, Tim Higgins, Francesco Viola, Frank Regan, Elisa Ferrante
  • Publication number: 20210148889
    Abstract: An integrated system for determining a hemostasis and oxygen transport parameter of a blood sample, such as blood, is disclosed. The system includes a measurement system, such as an ultrasonic sensor, configured to determine data characterizing the blood sample. For example, the data could be displacement of the blood sample in response to ultrasonic pulses. An integrated aspect of the system may be a common sensor, sample portion or data for fast and efficient determination of both parameters. The parameters can also be used to correct or improve measured parameters. For example, physiological adjustments may be applied to the hemostatic parameters using a HCT measurement. Also, physical adjustments may be applied, such as through calibration using a speed or attenuation of the sound pulse through or by the blood sample. These parameters may be displayed on a GUI to guide treatment.
    Type: Application
    Filed: November 30, 2020
    Publication date: May 20, 2021
    Inventors: Francesco Viola, William F. Walker
  • Patent number: 11002712
    Abstract: A device for estimating a mechanical property of a sample is disclosed herein. The device may include a chamber configured to hold the sample; a transmitter configured to transmit a plurality of waveforms, including at least one forcing waveform; and a transducer assembly operatively connected to the transmitter and configured to transform the transmit waveforms into ultrasound waveforms. The transducer assembly can also transmit and receive ultrasound waveforms into and out of the chamber, as well as transform at least two received ultrasound waveforms into received electrical waveforms.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: May 11, 2021
    Assignee: Hemosonics LLC
    Inventors: William F. Walker, F. Scott Corey, Andrew Homyk, Tim Higgins, Francesco Viola, Frank Regan, Elisa Ferrante
  • Patent number: 10962508
    Abstract: Method and systems for of evaluating a mechanical property of a material by applying force to the material sufficient to physically displace a portion of the material, measuring displacement of the material, adaptively adjusting the force when the displacement measured is not within a predetermined range of displacement values, wherein the force is increased or decreased depending upon whether the measured displacement is below or above the predetermined range, respectively, and computing a mechanical property value resultant from the displacement of the material.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: March 30, 2021
    Assignee: University of Virginia Patent Foundation
    Inventors: William F. Walker, Francesco Viola, F. William Mauldin, II
  • Patent number: 10962524
    Abstract: An integrated system for determining a hemostasis and oxygen transport parameter of a blood sample, such as blood, is disclosed. The system includes a measurement system, such as an ultrasonic sensor, configured to determine data characterizing the blood sample. For example, the data could be displacement of the blood sample in response to ultrasonic pulses. An integrated aspect of the system may be a common sensor, sample portion or data for fast and efficient determination of both parameters. The parameters can also be used to correct or improve measured parameters. For example, physiological adjustments may be applied to the hemostatic parameters using a HCT measurement. Also, physical adjustments may be applied, such as through calibration using a speed or attenuation of the sound pulse through or by the blood sample. These parameters may be displayed on a GUI to guide treatment.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: March 30, 2021
    Assignee: HomoSonics LLC
    Inventors: Francesco Viola, William F. Walker
  • Publication number: 20200132701
    Abstract: Provided are devices systems and methods for evaluation of hemostasis. In some embodiments, an apparatus is disclosed comprising a housing, a plurality of test chambers located in the housing, the plurality of test chambers including chambers configured for measurements via a system that interrogates one or more viscoelastic properties of test samples in the test chambers, wherein the one or more viscoelastic properties is used to characterize dynamics of coagulation and/or fibrinolysis.
    Type: Application
    Filed: October 21, 2019
    Publication date: April 30, 2020
    Inventors: Francesco Viola, William F. Walker, Gregory V. Browne, Robert S. Magyar, Bjarne Hansen, Christopher G. Denny
  • Publication number: 20200116673
    Abstract: A device for estimating a mechanical property of a sample is disclosed herein. The device may include a chamber configured to hold the sample; a transmitter configured to transmit a plurality of waveforms, including at least one forcing waveform; and a transducer assembly operatively connected to the transmitter and configured to transform the transmit waveforms into ultrasound waveforms. The transducer assembly can also transmit and receive ultrasound waveforms into and out of the chamber, as well as transform at least two received ultrasound waveforms into received electrical waveforms.
    Type: Application
    Filed: October 17, 2019
    Publication date: April 16, 2020
    Inventors: William F. Walker, F. Scott Corey, Andrew Homyk, Tim Higgins, Francesco Viola, Frank Regan, Elisa Ferrante
  • Patent number: 10495613
    Abstract: A device for estimating a mechanical property of a sample is disclosed herein. The device may include a chamber configured to hold the sample; a transmitter configured to transmit a plurality of waveforms, including at least one forcing waveform; and a transducer assembly operatively connected to the transmitter and configured to transform the transmit waveforms into ultrasound waveforms. The transducer assembly can also transmit and receive ultrasound waveforms into and out of the chamber, as well as transform at least two received ultrasound waveforms into received electrical waveforms.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: December 3, 2019
    Assignee: Hemosonics, LLC
    Inventors: William F. Walker, F. Scott Corey, Andrew Homyk, Tim Higgins, Francesco Viola, Frank Regan, Elisa Ferrante
  • Patent number: 10481168
    Abstract: Provided are devices, systems and methods for evaluation of hemostasis. In some embodiments, an apparatus is disclosed comprising a housing; a plurality of test chambers located in the housing, the plurality of test chambers including chambers configured for measurements via a system that interrogates one or more viscoelastic properties of test samples in the test chambers, wherein the one or more viscoelastic properties is used to characterize dynamics of coagulation and/or fibrinolysis.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: November 19, 2019
    Assignee: HemoSonics LLC
    Inventors: Francesco Viola, William F. Walker, Gregory V. Browne, Robert S. Magyar, Bjarne Hansen, Christopher G. Denny