Imtmedical Ag

Iasset Ag

Zoll Medical Corporation

Imt Analytics Ag

Matthias Van Der Staay

Harri Friberg

Christopher M Varga

Martin Björn Hess

Matthias Binder

A gas valve () for ventilation which comprises a main body () having a first gas chamber (), a second gas chamber () and at least an inlet duct () for supplying a gas to the first gas chamber (). The gas valve () further comprises a proportional valve () for temporally sealing the first gas chamber () from the second gas chamber (). The second gas chamber () comprises at least a second passage opening () for releasing the gas from the second gas chamber () and the second gas chamber () comprises a port () for connecting a pressure measurement apparatus for measuring the gas pressure in the second gas chamber (). A circuit with a ventilation limb which comprises a gas valve () and a method for determining a releasing gas flow of a gas valve are also disclosed.

Gas valve for ventilation, a circuit for a ventilation system and a method for determining a releasing gas flow

The invention is related to ventilation apparatuses and methods for operating a ventilator of a ventilator apparatus. In the method at least one duration ratio factor is set in a computing system of the ventilator apparatus; at least one minute volume, at least one functional dead space volume and at least one time constant are determined; a respiration frequency is computed, based on a previously defined lung model, depending on the determined parameters. The computed respiration frequency is optimized on at least one minimum of a delivered parameter, which is induced to a patient using the ventilator; an inspiratory time and an expiratory time are determined based on the computed respiration frequency and the duration ratio factor; at least one tidal volume based on the previously computed respiration frequency and the determined minute volume is computed; and a delivered respiratory parameter of the ventilator is closed loop controlled.

Ventilator apparatus and method for operating a ventilator in said ventilator apparatus

The invention comprises a ventilation apparatus and method for operating a ventilator of a ventilator apparatus, wherein in the method at least one duration ratio factor is set in a computing system of the ventilator apparatus; at least one minute volume, at least one functional dead space volume and at least one time constant are determined; a respiration frequency is computed, based on a previously defined lung model, depending on said determined parameters, where said computed respiration frequency is optimized on at least one minimum of a delivered parameter, which is induced to a patient using said ventilator; an inspiratory time and an expiratory time are determined based on said computed respiration frequency and said duration ratio factor; at least one tidal volume based on said previously computed respiration frequency and said determined minute volume is computed; and a delivered respiratory parameter of the ventilator is closed loop controlled.

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Gossau ZH, Switzerland

Matthias Van Der Staay