BREATHING TUBE ARRANGEMENT FOR A LUNG FUNCTION DIAGNOSTICS DEVICE COMPRISING A DISTAL FILTER ELEMENT

The disclosure relates to a breathing tube arrangement for a lung function diagnostics device, comprising a breathing tube defining a guiding path for breathing air to be analyzed by a lung function diagnostics device, the breathing tube having a proximal end, a distal end and an analysis zone locat...

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Bibliographische Detailangaben
Hauptverfasser: BUESS, Christian, RENGGLI, David, DANERS, Felix, FROEHLICHER, Fabian
Format: Patent
Sprache:eng
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Zusammenfassung:The disclosure relates to a breathing tube arrangement for a lung function diagnostics device, comprising a breathing tube defining a guiding path for breathing air to be analyzed by a lung function diagnostics device, the breathing tube having a proximal end, a distal end and an analysis zone located between the proximal end and the distal end. According to an aspect of the disclosure, the breathing tube arrangement comprises a filter element having a filter material, a breathing air releasing region arranged distally of the filter material, and a diffusor zone arranged proximally of the filter material, wherein the diffusor zone comprises a proximal end having a first proximal cross-sectional area and a distal end having a first distal cross-sectional area that is bigger than the first proximal cross-sectional area, and wherein the breathing air releasing region has a second distal cross-sectional area, wherein the second distal cross-sectional area is bigger than the first proximal cross-sectional area and at least as big as the first distal cross-sectional area, wherein a ratio between the first proximal cross-sectional area and the second distal cross-sectional area lies in a range of between 1:2 to 1:20.