Patent application title: WEARABLE HEALTH MONITORING DEVICE
Inventors:
IPC8 Class: AA61B50205FI
USPC Class:
Class name:
Publication date: 2022-05-26
Patent application number: 20220160244
Abstract:
A health monitoring device for detecting blood pressure having a blood
pressure sensor including a first fiber Bragg grating (FBG) with a
refractive index is configured to be placed in contact with a person's
skin approximate to an artery or vein. A baseline sensor that includes a
second fiber Bragg grating (FBG) also having a refractive index is
configured to be placed in contact with a person's skin away from an
artery or vein to provide a baseline refractive index. The device pulses
light waves through the FBGs to provide a processor with reading of the
refractive index from the FBGs. Based on the effective shifts of the
Bragg wavelength due to axial strain on the FBGs, a blood pressure
estimator estimates systolic and diastolic blood pressure based on a
calibration curve comparing pressure against strain.Claims:
Description:
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