Patent ID: 9333316
Filing Date: 2016-05-10
CPC Classification: A61M

Claim Text:
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).