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Ceramic emitter substrate

  • US 8,355,766 B2
  • Filed: 10/09/2008
  • Issued: 01/15/2013
  • Est. Priority Date: 10/12/2007
  • Status: Active Grant
First Claim
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1. An optical medical device that transmits optical radiation into a fleshy tissue site, the optical radiation detected after absorption by pulsatile blood flow within the fleshy tissue site so as to compute constituents of the pulsatile blood flow, the optical medical device comprising:

  • a multi-layer generally rectangular-cross-sectioned ceramic body having a top side, a bottom side and an edge adjoining the sides, the ceramic body forming an emitter package different and separate from any detector package configured to output signals indicative of said absorption;

    a cavity defined by an outer periphery of the ceramic body disposed on the top side;

    a plurality of conductive bonding pads disposed within the cavity;

    a plurality of conductive solder pads disposed on the bottom side proximate the edge; and

    a plurality of conductive traces and a plurality of conductive vias forming an interconnect of the bonding pads and the solder pads so that light emitting diodes (LEDs) can be attached to the bonding pads and individually activated as an emitter array via row and column drive signals applied to the solder pads in order to transmit optical radiation out of the cavity.

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