The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2015
Filed:
Nov. 05, 2008
Thomas Handzsuj, Lübeck, DE;
Ernst Schubert, Lübeck, DE;
Frank Ralfs, Lübeck, DE;
Marcus Eger, Lübeck, DE;
Thomas Handzsuj, Lübeck, DE;
Ernst Schubert, Lübeck, DE;
Frank Ralfs, Lübeck, DE;
Marcus Eger, Lübeck, DE;
Dräger Medical GmbH, Lübeck, DE;
Abstract
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 ΔE is the deviation of a measured or assumed elastance (E) of the patient from an ideal elastance (E) and ΔR is the deviation of a measured or assumed resistance (R) of the patient from an ideal resistance (R). The assist pressure PS(t)=VA·V(t)+FA·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.