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Ventilation system with electrochemical filter and method using the electrochemical filter

A respiratory system, electrochemical technology, applied in the field of respiratory system, can solve problems such as not mentioned, high false positive value, propofol concentration distortion, etc.

Pending Publication Date: 2020-01-21
DRAGERWERK AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, hypnotics are not allowed to accumulate in the respiratory system, which would distort propofol concentrations and lead to higher false positive values ​​than what actually occurred
So far, the above problems have not been addressed in the literature

Method used

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  • Ventilation system with electrochemical filter and method using the electrochemical filter
  • Ventilation system with electrochemical filter and method using the electrochemical filter
  • Ventilation system with electrochemical filter and method using the electrochemical filter

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Experimental program
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Embodiment Construction

[0024] figure 1 A schematic functional diagram of the electrochemical cell (filter 8 ) used according to the invention is shown, which corresponds to the electrochemical gas sensor. Specifically illustrated is the structure of the cell consisting of a diaphragm 4, an electrolyte-wetted working electrode 1, a counter electrode 2, a reference electrode 3, and a voltage regulator switch 7 for applying a constant voltage in the range of 100 to 500 mV to the working electrode. Propofol escapes from the breathing gas 6 at the working electrode 1 and is oxidized there. This causes an electric current. The sensor is exactly like figure 1 is constructed like the filter in , except that it is designed for smaller airflows and measures the current proportional to the concentration of propofol.

[0025] figure 2 A configuration of the filter 8 is shown. Propofol-containing gas 6 flows through inlet 9 into filter cartridge 10 , which is filled with sorbent 11 . The gas 6 passes thro...

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PUM

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Abstract

A ventilation system includes an electrochemical filter for depleting alkyl phenols, especially 2,6-diisopropyl phenol, in breathing gas. A method uses the filter for removing alkyl phenols, especially 2,6-diisopropyl phenol, from breathing gas.

Description

technical field [0001] The invention relates to a breathing system with an electrochemical filter for depleting alkylphenols, in particular 2,6-diisopropylphenol, from breathing gases, and to a filter for removing from breathing gases Applications to remove alkylphenols, especially 2,6-diisopropylphenol. Background technique [0002] 2,6-Diisopropylphenol (also known as propofol) is an intravenous sleeping pill that is usually injected during exams or surgery for sedation or loss of consciousness. [0003] It is also known to provide the patient during anesthesia with a breathing system for monitoring the breathing of the patient during anesthesia, such as a rebreathing system, in which the breathing gas exhaled by the patient is returned to the patient, this processing step typically involves depletion of carbon dioxide. [0004] In order to monitor the effectiveness of anesthesia, it would be desirable to measure the concentration of propofol in the respiratory gases. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M16/01A61M16/10G01N27/28G01N27/30G01N33/497
CPCA61M16/01A61M16/0003A61M16/105G01N27/28G01N27/30G01N27/308G01N33/497G01N33/0047A61M2016/1035A61M2016/0027A61M16/208A61M16/201A61M16/085A61M16/0891A61M16/22A61M16/0066A61M16/0081A61M16/024A61M2205/75A61M2202/0241B01D53/326A61B5/4821A61B5/082A61B5/097B01D2253/1122B01D53/04B01D53/30B01D2259/4533Y02C20/40A61M16/026G01N2030/025G01N30/02
Inventor 罗尔夫·埃克哈特克里斯特尔·比克曼-利特尔
Owner DRAGERWERK AG