Data processing device for an anesthesia machine

The invention relates to a data processing device for anesthesia apparatus, having means for volume flow adjustable via controlled delivery of three anesthetics, namely two hypnotics, one of an intravenously administered hypnotic and the other is a volatile hypnotic agent, and an opioid, wherein the data processing means adapted to is a) to determine with a module for pharmacokinetic model calculations from continuously supplied data of the volume flows of the administered anesthetic their respective effective concentration at the site of action and to normalize, wherein the concentration of each anesthetic agent is divided by a predetermined effect concentration of anesthetic for normalization in which a predetermined percentage of patients showing a certain effect, and the normalized concentrations of the hypnotics are added to a total concentration of hypnotics, b, to be calculated) with a module for a model calculation isoboles least one isobole as a curve in a coordinate plane, which is spanned by a total concentration of hypnotics and opioid concentration axis axis as a function of the currently determined normalized concentrations c) display a two-dimensional effect graphic with a display module, in which the y axis is a measure of the hypnotics total concentration and the x-axis are a measure of the normalized opioid concentration and in which at least the data of the currently calculated normalized hypnotics Gesamtkonzentrations- and opioid concentration values ​​and the plurality of display of the determined isoboles, wherein the display of changes occurring over time of certain isoboles is adjusted.