Ventilation device with automated detection of a flow sensor error taking into account spontaneous breathing

摘要

A respiratory device (10) for artificial respiration of a patient comprises: a respiratory gas source (15), a respiratory line arrangement (30), a valve arrangement (20, 22), a flow sensor arrangement (44, 48) comprising a distal flow sensor (48) and a proximal flow sensor (44), a pressure sensor arrangement (27) for the quantitative detection of a gas pressure in the ventilation line arrangement (30), - A pressure change arrangement (16) for changing the gas pressure in the ventilation line arrangement (30, and with a control device (18) which is designed at least to To control the operation of the pressure change arrangement based on measurement signals from the proximal flow sensor 44, and • to conclude an error in dependence on measuring signals of the proximal flow sensor (44) and the distal flow sensor (48). According to the invention, the control device (18) is designed as a function of measuring signals of the proximal flow sensor (44) and the distal flow sensor (48 ) to close an error candidate of the proximal flow sensor (44) and to discard the candidate error if during a verification phase at least one discard criteria for discarding the candidate error taking into account a degree of spontaneous breathing activity of the patient is met.