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Contoured protrusion for improving spectroscopic measurement of blood constituents

  • US 9,591,975 B2
  • Filed: 05/06/2013
  • Issued: 03/14/2017
  • Est. Priority Date: 07/03/2008
  • Status: Active Grant
First Claim
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1. A multi-stream emitter for a noninvasive, physiological device configured to transmit optical radiation in a tissue site, said emitter comprising:

  • a submount comprising a base surface;

    a first surface perpendicular to the base surface;

    a second surface perpendicular to the first surface and the base surface;

    a top-emitting diode affixed on the first surface and configured to transmit first infrared optical radiation in a first direction perpendicular to the first surface and into a tissue site of a patient;

    a side-emitting diode affixed on the second surface and configured to transmit second infrared optical radiation in a second direction parallel to the second surface and into the tissue site of the patient, wherein the side-emitting diode is configured to transmit the second infrared optical radiation at a power between 40 mW to 100 mW and at a wavelength between 1600 nm to 1800 nm, and wherein the side-emitting diode is larger than the top-emitting diode;

    a heat sink thermodynamically coupled to the top-emitting diode and the side-emitting diode; and

    at least one thermistor configured to detect a temperature of at least one of the optical sources,the top-emitting diode and the side-emitting diode positioned on the submount such that the first and the second infrared optical radiation are generally aligned toward the tissue site of the patient.

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