Patent ID: 8855735
Filing Date: 2014-10-07
Classification: A61B,G01J,G01N,H01L

Abstract:
1. A system comprising: a spectrophotometric sensor configured to be operatively coupled to the monitor, the spectrophotometric sensor comprising: one or more emitters configured to transmit light into tissue, wherein the light has a wavelength adapted to obtain a physiologic measurement, and wherein the one or more emitters comprise a photonic crystal light emitting diode (LED) or a conventional LED; and a detector configured to receive the light from the tissue and output a signal proportional to an intensity of the light from the tissue; and a monitor comprising a drive interface configured to: determine whether the one or more emitters transmitting light into the tissue comprise a photonic crystal LED or a conventional LED; determine whether an excess current is being driven through the one or more emitters; and adjust a current driving the one or more emitters to a first level if the one or more emitters comprise the photonic crystal LED or to a second level if the one or more emitters comprise the conventional LED, wherein adjusting the current driving the one or more emitters is based at least in part on whether excess current is being driven through the one or more emitters and on a signal-to-noise ratio of the signal generated by the detector.