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Emitter driver for noninvasive patient monitor

  • US 9,186,102 B2
  • Filed: 03/27/2014
  • Issued: 11/17/2015
  • Est. Priority Date: 09/03/2009
  • Status: Active Grant
First Claim
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1. A cable configured to communicate signals between a patient monitor and a noninvasive optical sensor, the cable comprising:

  • one or more signal lines configured to carry one or more drive signals to one or more optical radiation sources of the noninvasive optical sensor;

    N address lines configured to carry N address signals, N being greater than 2; and

    a decoder comprising N input terminals and up to 2N output terminals, the decoder configured to receive the N address signals from the N address lines via the N input terminals and to implement an addressing system capable of selectively individually addressing 2N unique outputs based on the N address signals, the decoder configured to activate an output terminal of the up to 2N output terminals based on the N address signals thereby activating the one or more optical radiation sources to provide optical radiation to tissue of the patient wearing the noninvasive optical sensor and allowing one or more photodetectors of the noninvasive optical sensor to detect the optical radiation after attenuation by the tissue.

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