PATIENT VENTILATOR, METHOD OF VENTILATING AN AIRWAY OF A PATIENT, AND CONTROLLER THEREFOR

摘要

There is provided a ventilator to ventilate an airway of a patient. The ventilator has a conduit having an inlet and an outlet, said outlet configured to be connected to said airway; a gas delivery element in fluid communication with said inlet, said gas delivery element configured to deliver air in a sequence of ventilation cycles, each ventilation cycle defined by a corresponding tidal volume to be delivered to said airway via said conduit, each tidal volume corresponding to a difference between a start volume and an end volume of said gas delivery element for that ventilation cycle; a pressure sensor monitoring pressure within said conduit; a controller communicatively coupled to said gas delivery element and said pressure sensor, said controller performing reducing said tidal volume between a first ventilation cycle and a successive second ventilation cycle contingent upon said pressure exceeding a pressure threshold in said first ventilation cycle.