In-ear biometric monitoring using photoplethysmography (ppg)
AssigneeBose Corporation
InventorsTegan M. AYERS, Christopher R. PAETSCH
Life of this patent
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Abstract
Aspects of the present disclosure provide methods and apparatuses for determining a subject's PPG based on a signal collected in-ear. Based on the PPG, one or more biometrics are determined including a heart rate, HRV, RR, SpO2 level, blood pressure, blood glucose level, or hemoglobin A1C level. RR and SpO2 are used to determine the presence of a sleep apnea event. The methods and apparatus of determining the subject's PPG described herein are continuous and non-invasive.
Claims20
A method for determining a photoplethysmogram (PPG) of a subject comprising:
- receiving signals via a PPG sensor disposed on an in-ear audio device inserted in an ear of the subject;
- and
- taking one or more actions to estimate the subject's PPG based on the received signals.
An in-ear earpiece configured to determine a photoplethysmogram (PPG) of a subject comprising:
- a PPG sensor configured to receive signals from an ear canal of a subject;
- at least one processor configured to take one or more actions to estimate the subject's PPG.
A method for non-invasively determining at least one biometric parameter comprising:
- measuring changes in blood volume within a blood vessel of a subject using a light emitting diode (LED) and photodetector (PD) disposed in on an ear tip of an in-ear earpiece;
- estimating a photoplethysmogram (PPG) of the subject based on the measured changes;
- estimating the at least one biometric parameter based on the estimated PPG;
- and
- taking one or more actions based on the at least one estimated biometric parameter.
Dependencies are inferred from the claim text.