Patents by Inventor Raghavendhar Gautham

Raghavendhar Gautham 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: 20200352484
    Abstract: Systems and methods are described herein for utilizing a photoacoustic sensor for estimating analyte concentration levels. Also described here are training methods for training an analyte sensor to more accurately estimate an analyte concentration level on the basis of a received acoustic signal.
    Type: Application
    Filed: July 29, 2020
    Publication date: November 12, 2020
    Inventors: Li Zhou, Raymond M. Russell, Peter Schultz, Anuj M. Patel, Carol Chen, Roshanne Malekmadani, Lynette To, Hsiao-Yu S. Kow, Raghavendhar Gautham
  • Publication number: 20200237268
    Abstract: A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.
    Type: Application
    Filed: April 20, 2020
    Publication date: July 30, 2020
    Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
  • Patent number: 10660555
    Abstract: A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.
    Type: Grant
    Filed: May 22, 2019
    Date of Patent: May 26, 2020
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
  • Patent number: 10588575
    Abstract: Disclosed are a system and method for determining a metric and/or indicator of a reliability of a blood glucose sensor in providing glucose measurements. In one aspect, the metric and/or indicator may be computed based, at least in part, on an observed trend associated with signals generated by the blood glucose sensor.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: March 17, 2020
    Assignee: Medtronic Minimed, Inc.
    Inventors: Rebecca K. Gottlieb, Ying Luo, Raghavendhar Gautham, Bradley Liang, Anirban Roy, Kenneth W. Cooper, Rajiv Shah, Barry Keenan
  • Publication number: 20200077930
    Abstract: The invention disclosed herein includes sensors having three dimensional configurations that allow expansive “360°” sensing (i.e. sensing analyte from multiple directions) in the environments in which such sensors are disposed. Embodiments of the invention provide analyte sensors having foldable substrates adapted to produce optimized configurations of electrode elements as well as methods for making and using such sensors. Typical embodiments of the invention include glucose sensors used in the management of diabetes.
    Type: Application
    Filed: December 11, 2018
    Publication date: March 12, 2020
    Applicant: Medtronic MiniMed, Inc.
    Inventors: Megan E. Little, Katherine T. Wolfe, Raghavendhar Gautham, Bradley C. Liang, Rajiv Shah
  • Publication number: 20190269355
    Abstract: A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.
    Type: Application
    Filed: May 22, 2019
    Publication date: September 5, 2019
    Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
  • Publication number: 20190223771
    Abstract: Embodiments of the invention provide optimized polymeric surfaces adapted for use with implantable medical devices as well as methods for making and using such polymeric surfaces. These polymer surfaces have a constellation of features that function to inhibit or avoid an inflammatory immune response generated by implantable medical devices. Typical embodiments of the invention include an implantable glucose sensor used in the management of diabetes having a polymer surface with the disclosed constellation of features.
    Type: Application
    Filed: January 23, 2018
    Publication date: July 25, 2019
    Applicant: MEDTRONIC MINIMED, INC.
    Inventors: Jia Yao, Daniel E. Pesantez, Anuradha Biswas Bhatia, Akhil Srinivasan, Guangping Zhang, Andrea Varsavsky, Raghavendhar Gautham
  • Patent number: 10342468
    Abstract: A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: July 9, 2019
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
  • Patent number: 10335076
    Abstract: A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: July 2, 2019
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
  • Patent number: 10335077
    Abstract: A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.
    Type: Grant
    Filed: November 20, 2017
    Date of Patent: July 2, 2019
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
  • Patent number: 10327680
    Abstract: Electrochemical impedance spectroscopy (EIS) may be used in conjunction with continuous glucose monitoring (CGM) to enable identification of valid and reliable sensor data, as well implementation of Smart Calibration algorithms.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: June 25, 2019
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Keith Nogueira, Taly G. Engel, Raghavendhar Gautham, Xiaolong Li, Bradley C. Liang, Rajiv Shah, Jaeho Kim, Mike C. Liu, Andy Y. Tsai, Jeffrey Nishida
  • Patent number: 10321865
    Abstract: A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: June 18, 2019
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Raghavendhar Gautham, Ning Yang, Rajiv Shah
  • Patent number: 10251588
    Abstract: Disclosed are methods, apparatuses, etc. for glucose sensor signal reliability analysis.
    Type: Grant
    Filed: April 14, 2015
    Date of Patent: April 9, 2019
    Assignee: Medtronic Minimed, Inc.
    Inventors: Bradley Liang, Kenneth W. Cooper, Raghavendhar Gautham, Rajiv Shah
  • Publication number: 20190076068
    Abstract: A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.
    Type: Application
    Filed: November 9, 2018
    Publication date: March 14, 2019
    Inventors: Ning Yang, Raghavendhar Gautham, Bradley C. Liang, Rajiv Shah
  • Publication number: 20190059793
    Abstract: A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.
    Type: Application
    Filed: October 25, 2018
    Publication date: February 28, 2019
    Inventors: Ning Yang, Raghavendhar Gautham, Rajiv Shah
  • Publication number: 20190059794
    Abstract: A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.
    Type: Application
    Filed: October 26, 2018
    Publication date: February 28, 2019
    Inventors: Ning Yang, Raghavendhar Gautham, Rajiv Shah
  • Patent number: 10188326
    Abstract: The invention disclosed herein includes sensors having three dimensional configurations that allow expansive “360°” sensing (i.e. sensing analyte from multiple directions) in the environments in which such sensors are disposed. Embodiments of the invention provide analyte sensors having foldable substrates adapted to produce optimized configurations of electrode elements as well as methods for making and using such sensors. Typical embodiments of the invention include glucose sensors used in the management of diabetes.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: January 29, 2019
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Megan E. Little, Katherine T. Wolfe, Raghavendhar Gautham, Bradley C. Liang, Rajiv Shah
  • Patent number: 10172544
    Abstract: A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: January 8, 2019
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Ning Yang, Raghavendhar Gautham, Bradley C. Liang, Rajiv Shah
  • Patent number: 10156543
    Abstract: A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: December 18, 2018
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Ning Yang, Raghavendhar Gautham, Rajiv Shah
  • Patent number: 9989490
    Abstract: A diagnostic Electrochemical Impedance Spectroscopy (EIS) procedure is applied to measure values of impedance-related parameters for one or more sensing electrodes. The parameters may include real impedance, imaginary impedance, impedance magnitude, and/or phase angle. The measured values of the impedance-related parameters are then used in performing sensor diagnostics, calculating a highly-reliable fused sensor glucose value based on signals from a plurality of redundant sensing electrodes, calibrating sensors, detecting interferents within close proximity of one or more sensing electrodes, and testing surface area characteristics of electroplated electrodes. Advantageously, impedance-related parameters can be defined that are substantially glucose-independent over specific ranges of frequencies. An Application Specific Integrated Circuit (ASIC) enables implementation of the EIS-based diagnostics, fusion algorithms, and other processes based on measurement of EIS-based parameters.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: June 5, 2018
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Ning Yang, Raghavendhar Gautham, Bradley C. Liang, Rajiv Shah