CONTROLLER FOR VENTILATION DEVICES FOR ADJUSTING VARIABLE PRESSURE-ASSISTED VENTILATION

摘要

The invention relates to a controller (1) for ventilation devices (8) for adjusting variable pressure-assisted ventilation which is based on the variability of a respiratory system (2), said respiratory system (2) in the form of a subject (Pi) having the intrinsic variability of the respiratory intake volume (VT) and a respiratory rate, the controller including properties of the respiratory system (2) and the ventilation work. The controller (1) is adapted to maintain the variability in the form of variations (?VT) of the respiratory intake volume (VT) based on an average value (VTM) and the associated average value (VTM) at predetermined respiratory intake volume values in a predetermined respiratory intake target range (VTO-VTU) while a pressure-assistance value (PASB) is applied to achieve a predetermined respiratory intake target range (VTO-VTU) according to the mechanical properties of the respiratory system (2) and the variability of the respiratory pattern (111, 113, 114, 115, 116). The controller (1) consists of the following elements: an evaluation unit (4) for collecting the properties of the respiratory pattern (111, 113, 114, 115, 116), a comparative unit (5) for testing if predetermined limits (VTO, VTU) within a respiratory intake volume target range (VTO-VTU) are met in relation to an average value (VTM) or an average standard deviation (RF) of the respiratory intake volume (VT); a decision unit (6) having predetermined decision algorithms which lead to an adaptation of the average value (VTM) or the average standard deviation (RF) of the assistance pressure value (PASB), and a transmitter unit (7) having complex distributions of assistance pressure values (PASB) which are sent individually or as packet-type series to the ventilation device (8), the complexity representing irregular variations of the pressure around an average value.