Liquid separation apparatus for removing a liquid from a respiratory gas and respiratory gas analyzing system
A liquid separation device and respiratory gas technology, applied in the field of respiratory gas analysis system, can solve problems such as easily overlooked, gas sensor pollution, inconvenience, etc.
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[0019] Certain embodiments are explained in the following detailed description with reference to the accompanying drawings. These detailed examples are naturally subject to modification and should not limit the scope of the invention set forth in the claims.
[0020] A liquid separation device comprising a hydrophobic filter upstream of the analyzer that analyzes the gas sample drawn from the breathing gas as described above works well enough for most cases, but it cannot tolerate liquids with reduced surface tension. Many medications used in nebulizers include surfactants, or for other reasons, surface tension is reduced. In addition, sputum and blood have a surface tension lower than that of water. Thus, a hydrophobic filter must have a high enough entry pressure not only for water, but also for liquids with lower surface tension. Such filters are sometimes called superphobic or oleophobic because the surface tension of oil is less than that of water. The filter material ...
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