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Drug administration controller

  • US 9,333,316 B2
  • Filed: 05/18/2012
  • Issued: 05/10/2016
  • Est. Priority Date: 01/17/2006
  • Status: Active Grant
First Claim
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1. A drug administration method comprising:

  • receiving, over a period of time, a signal indicative of at least one physiological parameter from a noninvasive optical sensor attached to a patient;

    determining, based on the signal, a plurality of measurements of the at least one physiological parameter, each of the plurality of measurements indicative of a value of the at least one physiological parameter at a different time during the period of time;

    determining, based on the plurality of measurements, at least one parameter trend for the at least one physiological parameter, the at least one parameter trend indicating a rate at which the at least one physiological parameter is increasing or decreasing over the period of time; and

    controlling a drug administration device based at least on one of the at least one parameter trends, wherein the at least one physiological parameter is a measure of blood methemoglobin (HbMet).

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