{
  "patent_number": "US 20230263439",
  "country": "US",
  "title": "How a Sensor Checks Itself for Accuracy Using Other Body Data",
  "original_title": "Systems and methods for multi-analyte sensing",
  "summary": "This patent describes a smart system that uses additional body measurements or relationships between different body chemicals to figure out if an analyte sensor, like a glucose monitor, is giving wrong readings and then fixes it or tells you to replace it.",
  "what_it_does": "The apparatus includes an analyte sensor, memory, and processor (Claim 1). The processor monitors a patient's analyte, such as glucose (Claim 2), and also gathers other measured sensor data indicative of the patient's physiological state, like oxygen levels or temperature (Claim 3). Based on this physiological state, the system determines what the analyte reading *should* be (expected analyte data), potentially using historical data mapping (Claim 4). If the measured analyte data deviates significantly from this expected data (Claim 5), the system calculates a 'correction factor' (Claim 1, 8) that indicates a calibration error. If recalibration is possible, the system adjusts the sensor, perhaps by changing its sensitivity (Claim 9). If recalibration is not possible, it recommends that the patient replace the sensor (Claim 1). Another approach involves using two different analyte sensors, for example, for glucose and lactate (Claim 10, 12). The system learns the usual relationship between these two analytes and then checks if their current relationship matches the historical one. A substantial mismatch indicates a calibration error in one of the sensors, prompting recalibration (Claim 10). For example, if a continuous glucose monitor (CGM) is showing unusually low glucose readings while the patient's body temperature is high, the system might detect a calibration error and adjust the CGM's readings.",
  "what_it_does_not_cover": [
    "Does not cover simple recalibration based solely on a single reference measurement (e.g., a finger-prick blood test) without considering additional physiological data or relationships between analytes.",
    "Does not cover systems that only monitor a single analyte without cross-referencing with other measured sensor data indicative of a physiological state or a second analyte.",
    "Does not cover systems that detect sensor errors but do not attempt recalibration or recommend replacement to the patient.",
    "Does not cover determining expected analyte data based on user-inputted lifestyle factors (like diet or exercise) unless these are derived from 'other measured sensor data indicative of a physiological state'."
  ],
  "filed": "2023-02-22",
  "granted": null,
  "expires": "2043-02-22",
  "status": "active",
  "holder": "Dexcom",
  "holder_url": "https://patentbrief.org/company/dexcom",
  "inventors": [
    {
      "name": "Kevin Ka Wing CHENG",
      "url": "https://patentbrief.org/inventor/kevin-ka-wing-cheng"
    },
    {
      "name": "Devon M. Headen",
      "url": "https://patentbrief.org/inventor/devon-m-headen"
    },
    {
      "name": "Sylvie LIONG",
      "url": "https://patentbrief.org/inventor/sylvie-liong"
    },
    {
      "name": "Mohamed R. HELAYHEL",
      "url": "https://patentbrief.org/inventor/mohamed-r-helayhel"
    },
    {
      "name": "Peter Charles Simpson",
      "url": "https://patentbrief.org/inventor/peter-charles-simpson"
    },
    {
      "name": "Samir Sudhir DAMLE",
      "url": "https://patentbrief.org/inventor/samir-sudhir-damle"
    },
    {
      "name": "Spencer Troy Frank",
      "url": "https://patentbrief.org/inventor/spencer-troy-frank"
    },
    {
      "name": "Nicholas Vincent Apollo",
      "url": "https://patentbrief.org/inventor/nicholas-vincent-apollo"
    },
    {
      "name": "Hadley Faith VANRENTERGHEM",
      "url": "https://patentbrief.org/inventor/hadley-faith-vanrenterghem"
    },
    {
      "name": "Qi An",
      "url": "https://patentbrief.org/inventor/qi-an"
    }
  ],
  "times_cited": 7,
  "tags": [
    "consumer_electronics",
    "biotech",
    "software",
    "telecommunications"
  ],
  "abstract": "An apparatus includes an analyte sensor, a memory, and a processor. The processor monitors, using the analyte sensor, an analyte of a patient during a time period to obtain measured analyte data for the analyte and monitors other measured sensor data indicative of a physiological state of the patient during the time period. The processor also determines, based on the physiological state of the patient during the time period, expected analyte data for the analyte and determines a correction factor based on the expected analyte data and the measured analyte data. The correction factor is indicative of an error in calibration of the analyte sensor. The processor also determines whether recalibration of the analyte sensor is possible. If recalibration is possible, the processor recalibrates the analyte sensor based on the correction factor, and if recalibration is not possible, the processor recommends, to the patient, to replace the analyte sensor.",
  "url": "https://patentbrief.org/patent/us/20230263439/systems-and-methods-for-multi-analyte-sensing",
  "markdown_url": "https://patentbrief.org/patent/us/20230263439/systems-and-methods-for-multi-analyte-sensing/md",
  "google_patents_url": "https://patents.google.com/patent/US20230263439",
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}