Ventilator and method for controlling a ventilator

Abstract

The invention describes a method device (1) for providing ventilatory assistance to a patient, comprising a set of tubes (30, 40, 50, 60, 70) for gas flow (fl) to and from the patient, a demand-flow valve (81, 81′), a flow sensor (86), and a pressure sensor (87, 88) for measuring the airway pressure. That demand-flow valve (81, 81′) is located at a Y-piece (8Y) that connects a tube (30) for the inspiratory and a tube (40) for the expiratory flow circuit to the patient. The invention further describes a method a demand-flow valve (81, 81′) which can be used for such a device (1) and to a method for controlling such a device (1).

Dependencies are inferred from the claim text.