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NIRS sensor assembly including electrically conductive and optically transparent EMI shielding

  • US 10,321,862 B2
  • Filed: 02/13/2012
  • Issued: 06/18/2019
  • Est. Priority Date: 02/13/2011
  • Status: Active Grant
First Claim
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1. A NIRS sensor assembly for non-invasive monitoring of blood oxygenation levels in a subject'"'"'s body, the assembly comprising:

  • at least one light source operable to emit light signals of a plurality of different wavelengths;

    at least one light detector operable to detect light emitted by the light source and passed through the subject'"'"'s body tissue, which at least one light detector has an active area through which light signals may be detected;

    electromagnetic interference shielding disposed around at least a portion of the at least one light detector, wherein the electromagnetic interference shielding includes an electrically conductive substrate that is optically transparent, which optically transparent substrate is aligned with the active area of the at least one light detector;

    a flexible circuit in electrical communication with the at least one light source and the at least one light detector; and

    an encapsulation material that is disposed in contact with the at least one light detector and covers the at least one light detector and a connection between the at least one light detector and the flexible circuit, and contacts the flexible circuit, and the electromagnetic interference shielding is encapsulated by the encapsulation material.

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