Multi-stream data collection system for noninvasive measurement of blood constituents

  • US 10,709,366 B1
  • Filed: 03/25/2020
  • Issued: 07/14/2020
  • Est. Priority Date: 07/03/2008
  • Status: Active Grant
First Claim
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1. A noninvasive physiological parameter measurement device adapted to be worn by a wearer, the noninvasive physiological parameter measurement device comprising:

  • one or more light emitters;

    a substrate having a surface;

    a first set of photodiodes arranged on the surface and spaced apart from each other, wherein;

    the first set of photodiodes comprises at least four photodiodes, andthe photodiodes of the first set of photodiodes are connected to one another in parallel to provide a first signal stream responsive to light from at least one of the one or more light emitters attenuated by body tissue;

    a second set of photodiodes arranged on the surface and spaced apart from each other, wherein;

    the second set of photodiodes comprises at least four photodiodes,the photodiodes of the second set of photodiodes are connected to one another in parallel to provide a second signal stream responsive to light from at least one of the one or more light emitters attenuated by body tissue, andat least one of the first signal stream or the second signal stream includes information usable to determine a physiological parameter of a wearer of the noninvasive physiological parameter measurement device;

    a wall extending from the surface and configured to surround at least the first and second sets of photodiodes; and

    a cover arranged to cover at least a portion of the surface of the substrate, wherein the cover comprises a protrusion that extends over all of the photodiodes of the first and second sets of photodiodes arranged on the surface, and wherein the cover is further configured to cover the wall.

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