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Isotope gas spectrometer instrument

An isotope and spectroscopy technology, applied in the field of spectroscopy instruments, can solve the problems of light detection signal fluctuations, uneven local temperature changes, concentration changes, huge equipment, etc., and achieve the effects of accurately measuring absorption and eliminating temperature differences

Inactive Publication Date: 2006-01-18
OTSUKA PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0017] The instrument disclosed in the above-mentioned documents can remove the CO which has an adverse effect on the determination. 2 , but needs to have filled CO 2 Columns of absorbents, conduits, and large sealed boxes to house each device, resulting in bulky equipment
In addition, assembling the instrument requires laborious labor, such as sealing the large box
[0018] Moreover, the uneven flow of air in the sealed box can cause local temperature changes and occasional concentration changes, thus making the optical detection signal fluctuate.

Method used

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Embodiment Construction

[0062] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. This embodiment is suitable for spectroscopic determination of isotopic pairs of marker 3 13 After administration of the urea diagnostic drug of C, in the breath sample 13 CO 2 concentration or concentration ratio 13 Conc / 12 Conc.

[0063] 1. Breath test

[0064] Before administering the urea diagnostic drug to the patient, collect the exhaled breath of the patient into a gas sample bag with a capacity of about 250ml. Then give the patient the urea diagnostic drug, and after 10 to 15 minutes, collect the patient's breathing gas in a gas sample bag in the same manner as above collecting the breathing gas sample.

[0065] Figure 5 is the gas nozzle N that connects the gas sample bag 1 to the device 1 and N 2 Schematic diagram on isotope gas for spectroscopic measurement. The gas sample bag 1 comprises a chamber 1a for holding the patient's brea...

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Abstract

This invention relates to an apparatus for spectrometrically measuring isotopic gas, which suit for introducing gas sample into a sample cell, then testing transmitted light intensity of passed gas at applicable wavelength of each gas component, and processing light intensity data to test concentration of each gas component, which characterized in a gas injecting device intuducing gas sample and injecting thereof into the sample cell by mechanical method.

Description

[0001] This application is a divisional application of a Chinese patent application with an application date of October 2, 1996 and an application number of 96191302.9. technical field [0002] The invention relates to a spectroscopic instrument for measuring isotope gas concentration according to the difference of isotope light absorption characteristics. Background technique [0003] Isotope analysis can be used in medicine to diagnose diseases. When drugs containing isotopes are administered, the metabolic function of the living body can be determined by measuring the change of isotope concentration or concentration ratio. On the other hand, isotope analysis is also used to study photosynthesis and metabolism of plants and in geochemistry for ecological tracking. [0004] It is well known that stomach ulcers and gastritis are caused by bacteria called Helicobacter pylori (HP) and strains. If the patient has HP in the stomach, the patient is treated with an antibiotic or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/35A61B10/00A61B5/00A61B5/08A61B5/083A61B5/097G01N1/22G01N21/03G01N21/11G01N21/25G01N21/27G01N21/31G01N21/59G01N33/00G01N33/497G01N35/08
CPCA61B5/0836A61B10/00A61B2010/0087G01N33/497A61B5/0059G01N33/0006G01N21/11G01N21/274G01N21/314G01N21/0332G01N21/3504A61B5/097
Inventor 久保康弘森泽且广座主靖池上英司筒井和典浜尾保森正昭丸山孝
Owner OTSUKA PHARM CO LTD