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Infrared spectrum analyser for determining 12C and 13C proportion in expiratory gas CO2

An infrared spectroscopy and exhaled breath technology is applied in the field of spectrum analyzers, which can solve the problems of low detection accuracy and discontinuous operation, and achieve the effects of improving detection accuracy, improving volume and convenient operation.

Inactive Publication Date: 2007-11-07
SHANGHAI JINFENG MEDICAL SCI & TECH
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Problems solved by technology

[0004] The technical problem to be solved in the present invention is to provide a high-precision, continuously operable, economical and compact infrared spectrum analyzer suitable for clinical use, aiming at the shortcomings of traditional non-spectral infrared spectrum analyzers such as low detection accuracy and discontinuous operation. Used to determine the ratio of 12C and 13C in the exhaled CO2

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  • Infrared spectrum analyser for determining 12C and 13C proportion in expiratory gas CO2

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Embodiment Construction

[0028] Below in conjunction with Fig. 1 the present invention is further described in detail:

[0029] An infrared spectrum analyzer for determining the ratio of isotopes 12C and 13C in exhaled CO2, including a non-spectral infrared analysis detection chamber 1, gas processing system 2, digital I / O device 3, bus interface I 4 and belt operation The external PC equipment 5 of the software 6, wherein, the non-split-type infrared analysis detection chamber 1, the gas processing system 2, the digital I / O device 3, the bus interface I 4 are modularly installed in the shell, and are connected to the external PC through cables The device 5 is connected; the non-spectral infrared analysis detection chamber 1 and the digital I / O device 3 control the sample inlet system (not shown in the figure) and the sample inspection system (not shown in the figure) combined in the gas processing system 2 ;Each module is equipped with its own microcontroller A9, and microcontroller A9 is connected w...

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Abstract

The invention discloses a infrared spectrum analyzer of conforming the 12C and 13C proportion of the expired air CO2, which includes a no dispersion of light type infrared analysis examination cavity, the gas-handling system, the digital I / O installment, the main line connection I and the exterior PC equipment with the operate software, the states each part of module type installs in the outer covering and connects the exterior PC equipment; the no dispersion of light type infrared analysis examination cavity and digital I / O installment control combined in test specimen entrance system and test specimen inspection system of the gas-handling system; each module has a micro controller A connects with the exterior PC equipment; full automation entire type system connects with exterior PC equipment, the gas enter type needle of the full automation entire type system connects the gas-handling system, and the no dispersion light type infrared analysis examination cavity uses the tinier cavity room. Its merit is high examine precision, may continuous-running, economy, compact.

Description

technical field [0001] The invention relates to a spectrum analyzer, in particular to an infrared spectrum analyzer for detecting the ratio of 12C and 13C in exhaled CO2 used in medical clinical diagnosis. Background technique [0002] Gas analyzers based on the principle of non-dispersive infrared optics are known which are equipped with spectrometers developed for industrial The ratio of 13CO2 / 12CO2 must be improved to achieve the high precision required by clinical testing. There are many deficiencies in the traditional non-dispersive infrared spectrometer: 1. The amount of gas to be detected is large, usually at least 200-300ml, which cannot be detected for small gas volumes; 2. Too many samples cannot be detected continuously; 3. The traditional non-dispersive infrared spectrum analyzer has a complex structure, complicated operation, and is prone to failure. Fourth, the detection accuracy is not high enough to meet the needs of clinical diagnosis. [0003] In order to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/25G01N33/483
Inventor 靳凌云
Owner SHANGHAI JINFENG MEDICAL SCI & TECH
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