DEVICE FOR EXPIRATION VOLUME MEASURING,ESPECIALLY DURING HIGH-FREQUENCY VENTILATION

摘要

The object of the solution is a device for measuring expiratory volume mainly in high frequency lung ventilation. Its principle dwells on the fact that recorded pressure differences lead to a functional analogous converter (8) that realizes the function of dependence of the intubation tube (5) flow rate on the pressure difference. The output from the analogous functional converter is lead to the circuit (10) of an average function value in a corrected expiration time. This average value multiplied by the constant of the relative expiration time from a time programmer (30) in the first multiplier (13) a given output multiplied in the second multiplier (17) by the constant of the comprising overall specific gravity of gas and the effective breakdown of the intubation tube (5) make the expiratory ventilation per minute in analogous form that in an analogue-to-digital converter (31) changes into a digital value on the display (32).<IMAGE>