User-worn device for noninvasively measuring a physiological parameter of a user

  • US 10,945,648 B2
  • Filed: 09/24/2020
  • Issued: 03/16/2021
  • Est. Priority Date: 07/03/2008
  • Status: Active Grant
First Claim
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1. A user-worn device configured to non-invasively determine measurements of physiological parameter of a user, the user-worn device comprising:

  • a plurality of light emitting diodes (LEDs);

    four photodiodes configured to receive light emitted by the LEDs, the four photodiodes being arranged to capture light at different quadrants of tissue of a user;

    a protrusion comprising a convex surface and a plurality of openings extending through the protrusion, the openings arranged over the photodiodes and configured to allow light to pass through the protrusion to the photodiodes; and

    one or more processors configured to receive one or more signals from at least one of the photodiodes and determine measurements of oxygen saturation of the user.

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