Panasonic Corporation

Panasonic Healthcare Co., Ltd.

Masahiro Aga

Koji Miyoshi

Kaoru Shigematsu

Takahiko Tanida

Hideyuki Kurokawa

Ryosuke Yamada

Kenji Murakami

Mie Takahashi

Yoko Matsuda

In a chromatography quantitative measuring apparatus according to the present invention, a beam applied from a light source to a chromatography test strip is formed into an elliptical shape by an optical means such as a cylindrical lens, a variation in absorbance that accompanies elution of a marker regent is detected while the elliptical beam is applied between a marker reagent hold part and a detection part, and a measurement is automatically started in a prescribed period of time since the detection of variation. According to the chromatography quantitative measuring apparatus so configured, non-uniform coloration is reduced by shaping the beam elliptically with the optical means, whereby the accuracy of quantitative analysis is enhanced, and the apparatus can be operated easily.

Chromatography quantitative measuring apparatus

In a chromatography quantitative measuring apparatus, a beam applied from a light source to a chromatography test strip is formed into an elliptical shape by an optical means such as a cylindrical lens, a variation in absorbance that accompanies elution of a marker regent is detected while the elliptical beam is applied between a marker reagent hold part and a detection part, and a measurement is automatically started in a prescribed period of time since the detection of variation. According to the chromatography quantitative measuring apparatus so configured, non-uniform coloration is reduced by shaping the beam elliptically with the optical means, whereby the accuracy of quantitative analysis is enhanced, and the apparatus can be operated easily.

Disclosed is a method for analyzing a sample solution, including introducing a sample solutionthrough a sample introduction partand developing the sample solutionto a developing layerthrough a capillary phenomenon to analyze an analyte contained in the sample solution, the sample introduction partbeing provided on one side of a test stripand the developing layerbeing provided on the other side of the test strip, wherein the test stripis disposed in such a development posture that the downstream region of the developing layer faces downward during the development. By this method, the developing rate is less susceptible to the viscosity of the sample solutionand thus has a small difference even among sample solutionsdiffering in viscosity. As a result, the analytical accuracy and reliability can be improved.

Method for analyzing sample solution and apparatus for analyzing sample solution

By measuring a luminance difference between predetermined two points or a luminance variation in a predetermined region in a state in which a liquid sample is developed in a chromatography specimen, and comparing the luminance difference or the luminance variation with a preset reference value, it is possible to automatically detect degradation such as a decrease in hydrophilicity in the lower portion of a liquid-impermeable sheet materialduring a chromatography inspection, thereby enabling an accurate inspection.

Chromatography inspection apparatus and method for judging degradation of chromatography specimen

Provided is a liquid sample analyzing method for analyzing an analyte in a liquid sample by using a test piece () on which overflow blocking lines () are formed to prevent the liquid sample from flowing to the outside from a passage region () of an extended layer (). In a state in which the liquid sample is not extended in the passage region () of the extended region (), the test piece () is measured so as to cross the passage region () of the extended layer () and the overflow blocking lines (). Thus in a state in which a difference in brightness is large between the passage region () of the extended region () and the overflow blocking lines (), it is possible to properly recognize the boundary portions between the passage region () of the extended region () and the overflow blocking lines ().

Liquid sample analyzing method

A liquid sample analysis device includes a holder partholding a test piece, an optical systemthat optically detects a reaction state of a liquid sample and a reagent, and a support memberthat integrally supports the holder partand the optical system. The orientation of the test pieceis changed with respect to the direction of gravitational force by rotating the support member

Liquid sample analysis device

Provided is a device in which light from a samplefixed in a test pieceis captured by an image sensorthrough an optical system made up of a lens, a diaphragm, and so on and concentration information is obtained, wherein a wide-band light sourcefor illuminating the test pieceis combined with an optical filterfor optionally selecting a wavelength of the light captured by the image sensor. Thus it is possible to reduce a measurement error caused by a change of the light quantity distribution of the light source

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Ehime, Japan

Masahiro Aga