Advanced pulse oximetry sensor

DC CAFC
  • US 10,470,695 B2
  • Filed: 12/19/2018
  • Issued: 11/12/2019
  • Est. Priority Date: 07/02/2015
  • Status: Active Grant
First Claim
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1. A wrist-worn physiological monitoring device configured for placement on a user at a tissue measurement site, the device comprising:

  • a light emission source comprising a plurality of emitters configured to irradiate the tissue measurement site by emitting light towards the tissue measurement site, the tissue measurement site being located on a wrist of the user, the plurality of emitters configured to emit one or more wavelengths;

    a plurality of detectors configured to detect the light emitted by the plurality of emitters after attenuation by a circular portion of the tissue measurement site, the plurality of detectors further configured to output at least one signal responsive to the detected light;

    a processor configured to receive the at least one signal responsive to the output and determine a physiological parameter of the user; and

    a light block forming an enclosing wall between the light emission source and the plurality of detectors, the light block defining the circular portion of the tissue measurement site, the light emission source arranged proximate a first side of the enclosing wall and the plurality of detectors arranged proximate a second side of the enclosing wall, the first side being different than the second side,wherein the enclosing wall prevents at least a portion of light emitted from the light emission source from being detected by the plurality of detectors without attenuation by the tissue, and wherein the plurality of detectors are arranged in an array having a spatial configuration corresponding to the circular portion of the tissue measurement site.

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