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).

  • Patent number: 12082910
    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: Grant
    Filed: July 29, 2020
    Date of Patent: September 10, 2024
    Assignee: Medtronic MiniMed, Inc.
    Inventors: Li Zhou, Raymond M. Russell, Peter Schultz, Anuj M. Patel, Carol Chen, Roshanne Malekmadani, Lynette To, Hsiao-Yu S. Kow, Raghavendhar Gautham
  • Patent number: 12082929
    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: December 28, 2020
    Date of Patent: September 10, 2024
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Ning Yang, Raghavendhar Gautham, Rajiv Shah
  • Patent number: 12042284
    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: Grant
    Filed: January 23, 2018
    Date of Patent: July 23, 2024
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Jia Yao, Daniel E. Pesantez, Anuradha Biswas Bhatia, Akhil Srinivasan, Guangping Zhang, Andrea Varsavsky, Raghavendhar Gautham
  • Publication number: 20240189508
    Abstract: Techniques disclosed herein relate to determining a calibrated measurement value indicative of a physiological condition of a patient using sensor calibration data determined based on fabrication measurements. In some embodiments, the techniques involve obtaining one or more electrical signals from a sensing element of a sensing arrangement, where the one or more electrical signals are influenced by a physiological condition in a body of a patient; obtaining calibration data associated with the sensing element, where the calibration data is based on fabrication process measurement data for the sensing element and a calibration model for a certain physiological condition; and determining, using the one or more electrical signals and the calibration data associated with the sensing element, a calibrated output value indicative of the physiological condition.
    Type: Application
    Filed: February 15, 2024
    Publication date: June 13, 2024
    Inventors: Steven C. Jacks, Peter Ajemba, Akhil Srinivasan, Jacob E. Pananen, Sarkis Aroyan, Pablo Vazquez, Tri T. Dang, Ashley N. Sullivan, Raghavendhar Gautham
  • Patent number: 11938303
    Abstract: Techniques disclosed herein relate to determining a calibrated measurement value indicative of a physiological condition of a patient using sensor calibration data and a performance model. In some embodiments, the techniques involve obtaining one or more electrical signals from a sensing element of a sensing arrangement, where the one or more electrical signals are influenced by a physiological condition in a body of a patient. The techniques also involve obtaining calibration data associated with the sensing element from a data storage element of the sensing arrangement, converting the one or more electrical signals into one or more calibrated measurement parameters using the calibration data, obtaining a performance model associated with the sensing element, obtaining personal data associated with the patient, and determining, using the performance model and based on the personal data and the one or more calibrated measurement parameters, a calibrated output value indicative of the physiological condition.
    Type: Grant
    Filed: December 14, 2022
    Date of Patent: March 26, 2024
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Steven C. Jacks, Peter Ajemba, Akhil Srinivasan, Jacob E. Pananen, Sarkis Aroyan, Pablo Vazquez, Tri T. Dang, Ashley N. Sullivan, Raghavendhar Gautham
  • Publication number: 20230110585
    Abstract: Techniques disclosed herein relate to determining a calibrated measurement value indicative of a physiological condition of a patient using sensor calibration data and a performance model. In some embodiments, the techniques involve obtaining one or more electrical signals from a sensing element of a sensing arrangement, where the one or more electrical signals are influenced by a physiological condition in a body of a patient. The techniques also involve obtaining calibration data associated with the sensing element from a data storage element of the sensing arrangement, converting the one or more electrical signals into one or more calibrated measurement parameters using the calibration data, obtaining a performance model associated with the sensing element, obtaining personal data associated with the patient, and determining, using the performance model and based on the personal data and the one or more calibrated measurement parameters, a calibrated output value indicative of the physiological condition.
    Type: Application
    Filed: December 14, 2022
    Publication date: April 13, 2023
    Inventors: Steven C. Jacks, Peter Ajemba, Akhil Srinivasan, Jacob E. Pananen, Sarkis Aroyan, Pablo Vazquez, Tri T. Dang, Ashley N. Sullivan, Raghavendhar Gautham
  • Patent number: 11565044
    Abstract: Medical devices, systems and methods are provided.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: January 31, 2023
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Steven C. Jacks, Peter Ajemba, Akhil Srinivasan, Jacob E. Pananen, Sarkis Aroyan, Pablo Vazquez, Tri T. Dang, Ashley N. Sullivan, Raghavendhar Gautham
  • Publication number: 20220133179
    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: January 10, 2022
    Publication date: May 5, 2022
    Inventors: Ning Yang, Raghavendhar Gautham, Bradley C. Liang, Rajiv Shah
  • Publication number: 20220095965
    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: December 9, 2021
    Publication date: March 31, 2022
    Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
  • Publication number: 20220047187
    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 1, 2021
    Publication date: February 17, 2022
    Inventors: Ning Yang, Raghavendhar Gautham, Rajiv Shah
  • Patent number: 11234624
    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 9, 2018
    Date of Patent: February 1, 2022
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Ning Yang, Raghavendhar Gautham, Bradley C. Liang, Rajiv Shah
  • Patent number: 11213231
    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: April 20, 2020
    Date of Patent: January 4, 2022
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
  • Patent number: 11160477
    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: October 25, 2018
    Date of Patent: November 2, 2021
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Ning Yang, Raghavendhar Gautham, Rajiv Shah
  • Patent number: 11020028
    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: December 11, 2018
    Date of Patent: June 1, 2021
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Megan E. Little, Katherine T. Wolfe, Raghavendhar Gautham, Bradley C. Liang, Rajiv Shah
  • Publication number: 20210113119
    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: December 28, 2020
    Publication date: April 22, 2021
    Inventors: NING YANG, RAGHAVENDHAR GAUTHAM, RAJIV SHAH
  • Publication number: 20210077718
    Abstract: Medical devices, systems and methods are provided.
    Type: Application
    Filed: September 12, 2019
    Publication date: March 18, 2021
    Inventors: Steven C. Jacks, Peter Ajemba, Akhil Srinivasan, Jacob E. Pananen, Sarkis Aroyan, Pablo Vazquez, Tri T. Dang, Ashley N. Sullivan, Raghavendhar Gautham
  • Patent number: 10905365
    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: October 26, 2018
    Date of Patent: February 2, 2021
    Assignee: MEDTRONIC MINIMED, INC.
    Inventors: Ning Yang, Raghavendhar Gautham, Rajiv Shah
  • Patent number: 10845330
    Abstract: A physiological characteristic sensor, a method for forming a physiological characteristic sensor, and a method for forming a platinum deposit having a rough surface are presented here. The method for forming a physiological characteristic sensor includes immersing a sensor electrode in a platinum electrolytic bath. Further, the method includes performing an electrodeposition process by sequentially applying a pulsed signal to the sensor electrode, wherein the pulsed signal includes a repeated cycle of a first current and a second current different from the first current, and applying a non-pulsed continuous signal to the sensor electrode, wherein the non-pulsed continuous signal includes a non-repeated application of a third current, to form a platinum deposit on the sensor electrode.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: November 24, 2020
    Assignee: Medtronic MiniMed, Inc.
    Inventors: Steven C. Jacks, Raghavendhar Gautham, Bradley C. Liang, Megan E. Little, Daniel E. Pesantez, Rajiv Shah
  • Publication number: 20200352450
    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: 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