Patents by Inventor ANDREA VARSAVSKY

ANDREA VARSAVSKY 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: 20150300969
    Abstract: A method of measuring blood glucose of a patient is presented here. In accordance with certain embodiments, the method applies a constant voltage potential to a glucose sensor and obtains a constant potential sensor current from the glucose sensor, wherein the constant potential sensor current is generated in response to applying the constant voltage potential to the glucose sensor. The method continues by performing an electrochemical impedance spectroscopy (EIS) procedure for the glucose sensor to obtain EIS output measurements. The method also performs a nonlinear mapping operation on the constant potential sensor current and the EIS output measurements to generate a blood glucose value.
    Type: Application
    Filed: April 18, 2014
    Publication date: October 22, 2015
    Applicant: MEDTRONIC MINIMED, INC.
    Inventors: Benyamin Grosman, Desmond Barry Keenan, John J. Mastrototaro, Rajiv Shah, Andrea Varsavsky, Ning Yang
  • Publication number: 20150164385
    Abstract: Methods and systems for sensor calibration and sensor glucose (SG) fusion are used advantageously to improve the accuracy and reliability of orthogonally redundant glucose sensor devices, which may include optical and electrochemical glucose sensors. Calibration for both sensors may be achieved via fixed-offset and/or dynamic regression methodologies, depending, e.g., on sensor stability and Isig-Ratio pair correlation. For SG fusion, respective integrity checks may be performed for SG values from the optical and electrochemical sensors, and the SG values calibrated if the integrity checks are passed. Integrity checks may include checking for sensitivity loss, noise, and drift. If the integrity checks are failed, in-line sensor mapping between the electrochemical and optical sensors may be performed prior to calibration.
    Type: Application
    Filed: April 24, 2014
    Publication date: June 18, 2015
    Applicant: MEDTRONIC MINIMED, INC.
    Inventors: Andrea Varsavsky, Xiaolong Li, Mike C. Liu, Yuxiang Zhong, Ning Yang
  • Publication number: 20150164386
    Abstract: Electrochemical Impedance Spectroscopy (EIS) is used in conjunction with continuous glucose monitors and continuous glucose monitoring (CGM) to enable in-vivo sensor calibration, gross (sensor) failure analysis, and intelligent sensor diagnostics and fault detection. An equivalent circuit model is defined, and circuit elements are used to characterize sensor behavior.
    Type: Application
    Filed: August 22, 2014
    Publication date: June 18, 2015
    Inventors: ANDREA VARSAVSKY, FEI YU, MICHAEL E. MILLER, NING YANG
  • Publication number: 20150164383
    Abstract: Methods and systems for sensor calibration and sensor glucose (SG) fusion are used advantageously to improve the accuracy and reliability of orthogonally redundant glucose sensor devices, which may include optical and electrochemical glucose sensors. Calibration for both sensors may be achieved via fixed-offset and/or dynamic regression methodologies, depending, e.g., on sensor stability and Isig-Ratio pair correlation. For SG fusion, respective integrity checks may be performed for SG values from the optical and electrochemical sensors, and the SG values calibrated if the integrity checks are passed. Integrity checks may include checking for sensitivity loss, noise, and drift. If the integrity checks are failed, in-line sensor mapping between the electrochemical and optical sensors may be performed prior to calibration.
    Type: Application
    Filed: April 24, 2014
    Publication date: June 18, 2015
    Applicant: MEDTRONIC MINIMED, INC.
    Inventors: Andrea Varsavsky, Xiaolong Li, Mike C. Liu, Yuxiang Zhong, Ning Yang
  • Publication number: 20150164371
    Abstract: Electrochemical Impedance Spectroscopy (EIS) is used in conjunction with continuous glucose monitors and continuous glucose monitoring (CGM) to enable in-vivo sensor calibration, gross (sensor) failure analysis, and intelligent sensor diagnostics and fault detection. An equivalent circuit model is defined, and circuit elements are used to characterize sensor behavior.
    Type: Application
    Filed: August 22, 2014
    Publication date: June 18, 2015
    Inventors: ANDREA VARSAVSKY, FEI YU, NING YANG
  • Publication number: 20150164387
    Abstract: Electrochemical Impedance Spectroscopy (EIS) is used in conjunction with continuous glucose monitors and continuous glucose monitoring (CGM) to enable in-vivo sensor calibration, gross (sensor) failure analysis, and intelligent sensor diagnostics and fault detection. An equivalent circuit model is defined, and circuit elements are used to characterize sensor behavior.
    Type: Application
    Filed: August 22, 2014
    Publication date: June 18, 2015
    Inventors: ANDREA VARSAVSKY, MICHAEL E. MILLER, BRADLEY C. LIANG
  • Publication number: 20150164388
    Abstract: Methods and systems for sensor calibration and sensor glucose (SG) fusion are used advantageously to improve the accuracy and reliability of orthogonally redundant glucose sensor devices, which may include optical and electrochemical glucose sensors. Calibration for both sensors may be achieved via fixed-offset and/or dynamic regression methodologies, depending, e.g., on sensor stability and Isig-Ratio pair correlation. For SG fusion, respective integrity checks may be performed for SG values from the optical and electrochemical sensors, and the SG values calibrated if the integrity checks are passed. Integrity checks may include checking for sensitivity loss, noise, and drift. If the integrity checks are failed, in-line sensor mapping between the electrochemical and optical sensors may be performed prior to calibration.
    Type: Application
    Filed: April 24, 2014
    Publication date: June 18, 2015
    Applicant: MEDTRONIC MINIMED, INC.
    Inventors: Andrea Varsavsky, Xiaolong Li, Mike C. Liu, Yuxiang Zhong, Ning Yang
  • Publication number: 20150164384
    Abstract: Methods and systems for sensor calibration and sensor glucose (SG) fusion are used advantageously to improve the accuracy and reliability of orthogonally redundant glucose sensor devices, which may include optical and electrochemical glucose sensors. Calibration for both sensors may be achieved via fixed-offset and/or dynamic regression methodologies, depending, e.g., on sensor stability and Isig-Ratio pair correlation. For SG fusion, respective integrity checks may be performed for SG values from the optical and electrochemical sensors, and the SG values calibrated if the integrity checks are passed. Integrity checks may include checking for sensitivity loss, noise, and drift. If the integrity checks are failed, in-line sensor mapping between the electrochemical and optical sensors may be performed prior to calibration.
    Type: Application
    Filed: April 24, 2014
    Publication date: June 18, 2015
    Applicant: MEDTRONIC MINIMED, INC.
    Inventors: Andrea Varsavsky, Xiaolong Li, Mike C. Liu, Yuxiang Zhong, Ning Yang
  • Publication number: 20150164382
    Abstract: Electrochemical Impedance Spectroscopy (EIS) is used in conjunction with continuous glucose monitors and continuous glucose monitoring (CGM) to enable in-vivo sensor calibration, gross (sensor) failure analysis, and intelligent sensor diagnostics and fault detection. An equivalent circuit model is defined, and circuit elements are used to characterize sensor behavior.
    Type: Application
    Filed: August 22, 2014
    Publication date: June 18, 2015
    Inventors: ANDREA VARSAVSKY, FEI YU, MICHAEL E. MILLER, BRADLEY C. LIANG, NING YANG
  • Publication number: 20150164389
    Abstract: Methods and systems for sensor calibration and sensor glucose (SG) fusion are used advantageously to improve the accuracy and reliability of orthogonally redundant glucose sensor devices, which may include optical and electrochemical glucose sensors. Calibration for both sensors may be achieved via fixed-offset and/or dynamic regression methodologies, depending, e.g., on sensor stability and Isig-Ratio pair correlation. For SG fusion, respective integrity checks may be performed for SG values from the optical and electrochemical sensors, and the SG values calibrated if the integrity checks are passed. Integrity checks may include checking for sensitivity loss, noise, and drift. If the integrity checks are failed, in-line sensor mapping between the electrochemical and optical sensors may be performed prior to calibration.
    Type: Application
    Filed: April 24, 2014
    Publication date: June 18, 2015
    Applicant: MEDTRONIC MINIMED, INC.
    Inventors: Andrea Varsavsky, Xiaolong Li, Mike C. Liu, Yuxiang Zhong, Ning Yang