Title:
EXHALATION DIAGNOSTIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/047170
Kind Code:
A1
Abstract:
According to an embodiment, an exhalation diagnostic device comprises a cell part, a light source part, a detection part and a control part. The cell part includes a space into which a sample gas containing a first substance and a second substance is introduced. The light source part allows light to enter into the space. The detection part detects the intensity of the light having passed through the space into which the sample gas is introduced. In a first operation, the control part allows the light source part to change the wavelength of the light within a wavelength band including a first wavelength at a first peak of the light absorption by the first substance and a second wavelength at a second peak of the light absorption by the second substance, and calculates the ratio of the amounts of the substances contained in the sample gas on the basis of the results detected by the detection part. In a second operation, the control part allows the light source part to change the wavelength of the light to a third wavelength, and detects a temporal change in the amounts of the substances on the basis of the results detected by the detection part.
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Inventors:
KUSABA MIYUKI (JP)
MAEKAWA AKIRA (JP)
TAKAGI SHIGEYUKI (JP)
KAKUNO TSUTOMU (JP)
HASEGAWA HIROSHI (JP)
SHIOMI YASUTOMO (JP)
MAEKAWA AKIRA (JP)
TAKAGI SHIGEYUKI (JP)
KAKUNO TSUTOMU (JP)
HASEGAWA HIROSHI (JP)
SHIOMI YASUTOMO (JP)
Application Number:
PCT/JP2015/057701
Publication Date:
March 31, 2016
Filing Date:
March 16, 2015
Export Citation:
Assignee:
TOSHIBA KK (JP)
International Classes:
G01N21/39; A61B5/08; G01N21/01; G01N21/3504
Foreign References:
| JP2005106546A | 2005-04-21 | |||
| JP2000097854A | 2000-04-07 | |||
| JP2002340795A | 2002-11-27 | |||
| JP2009216385A | 2009-09-24 |
Other References:
KASYUTICH V L ET AL.: "13C02/12C02 isotopic ratio measurements with a continuous-wave quantum cascade laser in exhaled breath", INFRARED PHYSICS & TECHNOLOGY, vol. 55, no. 1, January 2012 (2012-01-01), pages 60 - 66, XP028349117, DOI: doi:10.1016/j.infrared.2011.09.003
STEPANOV E V: "Laser analysis of the 13C/12C isotope ratio in C02 in exhaled air", QUANTUM ELECTRONICS, vol. 32, no. 11, November 2002 (2002-11-01), pages 981 - 986, XP001166579, DOI: doi:10.1070/QE2002v032n11ABEH002332
STEPANOV E V: "Laser analysis of the 13C/12C isotope ratio in C02 in exhaled air", QUANTUM ELECTRONICS, vol. 32, no. 11, November 2002 (2002-11-01), pages 981 - 986, XP001166579, DOI: doi:10.1070/QE2002v032n11ABEH002332
Attorney, Agent or Firm:
HYUGAJI, MASAHIKO (JP)
Masahiko Hiugaji (JP)
Masahiko Hiugaji (JP)
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