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).
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Publication number: 20200352484Abstract: 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: ApplicationFiled: July 29, 2020Publication date: November 12, 2020Inventors: Li Zhou, Raymond M. Russell, Peter Schultz, Anuj M. Patel, Carol Chen, Roshanne Malekmadani, Lynette To, Hsiao-Yu S. Kow, Raghavendhar Gautham
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Publication number: 20200237268Abstract: 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: ApplicationFiled: April 20, 2020Publication date: July 30, 2020Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
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Patent number: 10660555Abstract: 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: GrantFiled: May 22, 2019Date of Patent: May 26, 2020Assignee: MEDTRONIC MINIMED, INC.Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
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Patent number: 10588575Abstract: 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: GrantFiled: February 1, 2017Date of Patent: March 17, 2020Assignee: Medtronic Minimed, Inc.Inventors: Rebecca K. Gottlieb, Ying Luo, Raghavendhar Gautham, Bradley Liang, Anirban Roy, Kenneth W. Cooper, Rajiv Shah, Barry Keenan
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Publication number: 20200077930Abstract: 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: ApplicationFiled: December 11, 2018Publication date: March 12, 2020Applicant: Medtronic MiniMed, Inc.Inventors: Megan E. Little, Katherine T. Wolfe, Raghavendhar Gautham, Bradley C. Liang, Rajiv Shah
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Publication number: 20190269355Abstract: 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: ApplicationFiled: May 22, 2019Publication date: September 5, 2019Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
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Publication number: 20190223771Abstract: 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: ApplicationFiled: January 23, 2018Publication date: July 25, 2019Applicant: MEDTRONIC MINIMED, INC.Inventors: Jia Yao, Daniel E. Pesantez, Anuradha Biswas Bhatia, Akhil Srinivasan, Guangping Zhang, Andrea Varsavsky, Raghavendhar Gautham
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Patent number: 10342468Abstract: 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: GrantFiled: November 20, 2017Date of Patent: July 9, 2019Assignee: MEDTRONIC MINIMED, INC.Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
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Patent number: 10335076Abstract: 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: GrantFiled: November 20, 2017Date of Patent: July 2, 2019Assignee: MEDTRONIC MINIMED, INC.Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
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Patent number: 10335077Abstract: 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: GrantFiled: November 20, 2017Date of Patent: July 2, 2019Assignee: MEDTRONIC MINIMED, INC.Inventors: Jenn-Hann Larry Wang, Michael E. Miller, Raghavendhar Gautham, Yiwen Li, Rajiv Shah
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Patent number: 10327680Abstract: 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: GrantFiled: December 28, 2015Date of Patent: June 25, 2019Assignee: 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
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Patent number: 10321865Abstract: 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: GrantFiled: November 17, 2017Date of Patent: June 18, 2019Assignee: MEDTRONIC MINIMED, INC.Inventors: Raghavendhar Gautham, Ning Yang, Rajiv Shah
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Patent number: 10251588Abstract: Disclosed are methods, apparatuses, etc. for glucose sensor signal reliability analysis.Type: GrantFiled: April 14, 2015Date of Patent: April 9, 2019Assignee: Medtronic Minimed, Inc.Inventors: Bradley Liang, Kenneth W. Cooper, Raghavendhar Gautham, Rajiv Shah
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Publication number: 20190076068Abstract: 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: ApplicationFiled: November 9, 2018Publication date: March 14, 2019Inventors: Ning Yang, Raghavendhar Gautham, Bradley C. Liang, Rajiv Shah
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Publication number: 20190059793Abstract: 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: ApplicationFiled: October 25, 2018Publication date: February 28, 2019Inventors: Ning Yang, Raghavendhar Gautham, Rajiv Shah
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Publication number: 20190059794Abstract: 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: ApplicationFiled: October 26, 2018Publication date: February 28, 2019Inventors: Ning Yang, Raghavendhar Gautham, Rajiv Shah
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Patent number: 10188326Abstract: 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: GrantFiled: September 21, 2016Date of Patent: January 29, 2019Assignee: MEDTRONIC MINIMED, INC.Inventors: Megan E. Little, Katherine T. Wolfe, Raghavendhar Gautham, Bradley C. Liang, Rajiv Shah
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Patent number: 10172544Abstract: 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: GrantFiled: September 12, 2017Date of Patent: January 8, 2019Assignee: MEDTRONIC MINIMED, INC.Inventors: Ning Yang, Raghavendhar Gautham, Bradley C. Liang, Rajiv Shah
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Patent number: 10156543Abstract: 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: GrantFiled: February 27, 2013Date of Patent: December 18, 2018Assignee: MEDTRONIC MINIMED, INC.Inventors: Ning Yang, Raghavendhar Gautham, Rajiv Shah
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Patent number: 9989490Abstract: 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: GrantFiled: February 28, 2017Date of Patent: June 5, 2018Assignee: MEDTRONIC MINIMED, INC.Inventors: Ning Yang, Raghavendhar Gautham, Bradley C. Liang, Rajiv Shah