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.

Active Publication Date: 2012-07-25
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In practice, this is inconvenient, and may be easily overlooked
As a result, the gas sensor as well as other internal components of the gas analyzer may become contaminated

Method used

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  • Liquid separation apparatus for removing a liquid from a respiratory gas and respiratory gas analyzing system
  • Liquid separation apparatus for removing a liquid from a respiratory gas and respiratory gas analyzing system
  • Liquid separation apparatus for removing a liquid from a respiratory gas and respiratory gas analyzing system

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Embodiment Construction

[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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Abstract

A liquid separation apparatus for removing a liquid from a respiratory gas is disclosed herein. The liquid separation apparatus includes a housing (10) having an input (15) for delivering a sample withdrawn from the respiratory gas and a first output (18) for discharging at least part of the sample of the respiratory gas and a first filter (24) with a hydrophobic property for removing the liquid from the gas sample flowing through the input and first output of the housing. The first filter (24) also having an oleophobic property to improve a removal of the liquid in case a surface tension of the liquid is lower than a surface tension of bodily fluids. Also a respiratory gas analyzing system including the liquid separation apparatus is disclosed.

Description

technical field [0001] The present disclosure generally relates to a liquid separation device for removing liquid from breathing gas, which includes a housing having an input, a first output, and a first filter having hydrophobic properties, the input for passing liquid from breathing gas A sample is drawn, the first output is used to expel at least a portion of the sample of breathing gas, and the first filter is used to remove liquid from the gas sample flowing through the input and first output of the housing. The present disclosure also relates to a respiratory gas analysis system. Background technique [0002] In anesthesia or intensive care, the condition of a patient is often monitored, for example by analyzing the patient's exhaled gas for its contents. For this reason, a small portion of the breathing gas can be diverted to the gas analyzer. The sample often carries some water vapor into the analyzer, which condenses into droplets, and the sample also carries some...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D46/00B01D53/26A61M16/08A61B5/097A61B5/08
CPCA61M2205/7536A61M16/0816A61B5/0836A61B5/097A61B5/082A61M16/0808A61M2205/7563A61M2230/435A61B5/0833A61M2230/432A61M2230/437A61B5/083A61M2016/085A61M2205/75A61M16/1055A61M16/0833A61M16/085A61M16/1065
Inventor K·P·维克斯特隆
Owner GENERAL ELECTRIC CO
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