Hamilton Bonaduz Ag

Hamilton Medical Ag

Karolin Franke

Dominik Novotni

Felix Breitruck

Christoph Schranz

An exhalation valve arrangement () for a ventilation apparatus for artificial ventilation of patients is flow-capable in an exhalation flow direction (E) and encompasses: Provision is made according to the present invention that the exhalation valve arrangement () comprises a bypass chamber () which communicates in terms of flow mechanics with the upstream respiratory gas conduit () and which extends, proceeding from the upstream respiratory gas conduit (), into the region of the downstream respiratory gas conduit () and is embodied there for attachment of a gas pressure sensor ().

Exhalation valve arrangement for a ventilator apparatus with an apparatus for receiving a pressure sensor

The present artificial respiration ventilator () comprises, inter alia, a flow sensor arrangement () for quantitatively detecting a gas flow in a breathing line arrangement (), comprising a distal flow sensor () located farther from the patient end of the ventilation line arrangement (). and a proximal flow sensor () located closer to the patient end of the ventilation line arrangement (), and has a control device () at least for processing measurement signals of the flow sensor arrangement (), wherein the control device () is designed for error detection based on the measurement signals of the distal () and/or the proximal sensor (). According to the invention, the control device () is designed to detect an error of the flow sensor arrangement () on the basis of a comparison of a change value () of a measurement signal () of the one flow sensor () with a change value () of a measurement signal () of the respective other flow sensor () or/and with a measurement signal () of the one flow sensor ().

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Chur, Switzerland

Karolin Franke