Ventilating device for detecting respiratory cycles of patient, has signal processing unit attached with sensor to determine average gas leak value and inspiratory flow value from measured signal flow

摘要

The device has a ventilator (1) fluidly connected to a patient circuit (2) for generating gas under positive pressure to feed the patient circuit with the gas under pressure. The patient circuit comprises respiratory branches. A single flow sensor (3) is connected with the respiratory branches of the patient circuit to determine signal flow representing the output gas circulating in the respiratory branches. A signal processing unit (4) is attached with the sensor to determine an average gas leak value and an inspiratory flow value from the measured signal flow. An independent claim is also included for a method for determination an average gas leak value and an inspiratory gas flow value between a ventilating device and a patient.