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System and method for a biosensor monitoring and tracking band

  • US 9,642,538 B2
  • Filed: 09/25/2016
  • Issued: 05/09/2017
  • Est. Priority Date: 07/19/2015
  • Status: Active Grant
First Claim
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1. A health care monitoring system, comprising:

  • a health care band configured for attachment to a patient;

    a biosensor attached to the health care band, comprising;

    a memory configured to store a unique patient identification;

    a temperature sensor configured to obtain a temperature of the patient;

    a PPG circuit configured to emit light at a plurality of wavelengths directed at skin of the patient and obtain a plurality of spectral responses at each of the plurality of wavelengths of light reflected from the skin, including;

    obtaining a first spectral response around a first wavelength responsive to nitric oxide (NO) levels in arterial blood flow;

    obtaining a second spectral response around a second wavelength with a low absorption coefficient for nitric oxide (NO) in arterial blood flow;

    a processing circuit configured to;

    obtain an indicator of a concentration level of NO of the patient using the spectral responses at the plurality of wavelengths by;

    isolating a systolic point and a diastolic point in the first spectral response and obtain a value Lλ

    1
    using a ratio of the systolic point and the diastolic point in the first spectral response;

    isolating a systolic point and a diastolic point in the second spectral response and obtain a value Lλ

    2
    using a ratio of the systolic point and diastolic point in the second spectral response;

    obtaining a value Rλ

    1,λ

    2
    from a ratio of the value Lλ

    1
    and the value Lλ

    2
    , wherein the value Rλ

    1,λ

    2
    is the indicator of the concentration level of NO of the patient;

    determine patient vitals using additional spectral responses, wherein the patient vitals include oxygen saturation levels; and

    obtain concentration levels of one or more additional substances in arterial blood flow using the spectral responses, including;

    obtaining a blood glucose concentration level of the patient from the indicator of the concentration level of NO of the value Rλ

    1,λ

    2
    and a calibration table, wherein the calibration table correlates a plurality of the blood glucose concentration levels with a plurality of the values Rλ

    1,λ

    2
    ; and

    a wireless transceiver configured to transmit the temperature, oxygen saturation levels, the blood glucose concentration level and the unique patient identification.

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