Complex redundancy in continuous glucose monitoring

US11471082B2 · kind B2 · utility

Assignee

• MEDTRONIC MINIMED, INC. · US

Inventors

• Andrea Varsavsky · Santa Monica, US
• Jeffrey Nishida · Los Angeles, US
• Taly G. Engel · Los Angeles, US
• Keith Nogueira · Mission Hills, US
• Andy Y. Tsai · Pasadena, US
• Peter Ajemba · Humphreys, US

Key dates

• Filing date: Dec 13, 2017
• Grant date: Oct 18, 2022
• Expiry date: Jan 21, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2230/201
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A continuous glucose monitoring system may employ complex redundancy to take operational advantage of disparate characteristics of two or more dissimilar, or non-identical, sensors, including, e.g., characteristics relating to hydration, stabilization, and durability of such sensors. Fusion algorithms, Electrochemical Impedance Spectroscopy (EIS), and advanced Application Specific Integrated Circuits (ASICs) may be used to implement use of such redundant glucose sensors, devices, and sensor systems in such a way as to bridge the gaps between fast start-up, sensor longevity, and accuracy of calibration-free algorithms. Systems, devices, and algorithms are described for achieving a long-wear and reliable sensor which also minimizes, or eliminates, the need for BG calibration, thereby providing a calibration-free, or near calibration-free, sensor.