Drager Medical Gmbh

Drãgerwerk Ag & Co, Kgaa

Thomas Handzsuj

Marcus Eger

Hans-Ullrich Hansmann

Frank Sattler

Thomas Krüger

Philipp Rostalski

Frank Ralfs

Tobias Glaw

Ernst Schubert

A method selects the setting of a first operating parameter of a ventilation system that includes devices for feeding breathing air to and removing from a patient (), a display device () with a screen () and a computer (). The method includes presetting a first target value range for a first ventilation parameter, calculating permissible first operating parameter values by the computer () for the first operating parameter, so that the first ventilation parameter value is within the target value range if a permissible first operating parameter value is set; calculating values of a preset cost function, which is a function of at least one operating parameter, by the computer (); selecting a first operating parameter value by the computer (), at which the value of the cost function has an optimum; and outputting the selected first operating parameter value on the screen () of the display device ().

Method for setting the operating parameters of a ventilation system

A process for automatic control of a respirator changes between two phases of respiration by checking a detected respiratory breathing activity signal for a threshold criterion. If the threshold criterion is met, a changeover is made.

Process for the automatic control of a respirator

A method is provided for automatically controlling a ventilation or breathing system with a ventilation unit (), which is controlled by a control unit (), in order to deliver an assist pressure preset by the control unit, wherein the current values of the tidal volume flow Flow(t) and those of the volume V(t) are detected in the control unit. The control unit () may carry out a proportionally assisting ventilation method (PAV: Proportional Assist Ventilation) by a factor for a degree of compensation (PPSp) being selected by the control unit and by the parameters for the volume assist (VA) and the flow assist (FA) being determined by:VA=PPSFA=PPSwherein &#x394;E is the deviation of a measured or assumed elastance (E) of the patient from an ideal elastance (E) and &#x394;R is the deviation of a measured or assumed resistance (R) of the patient from an ideal resistance (R). The assist pressure PS(t)=VA&#xb7;V(t)+FA&#xb7;Flow(t) is determined from this by the control unit with the flow delivery device (ventilation unit ()) being set such as to deliver this assist pressure.

Method for automatically controlling a ventilation or breathing system as well as a corresponding ventilation or breathing system

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Lübeck, Germany

Thomas Handzsuj