Chemical analyzer and structure for chemical analysis

Abstract

An analyzer and a structure for analysis with high performance are provided which can reduce contamination between the reagents when the valve components or a plurality of reagents are included. The present invention is a chemical analyzer to which a sample is introduced and into which a structure for holding a reagent reacting with the above described sample is housed, including a mechanism for detecting the above described sample after the above described reaction; in which the above described structure includes a reagent cartridge having reagent storing parts for storing a plurality of reagents, a connection part to which the above described reagent cartridge is connected, and a channel cartridge having reagent channels through which a plurality of the above described reagents flow, a sample channel through which the above described testing object flows, and a reaction region where the above described reagent is reacted with the above described testing object.

Description

Technical field [0001] The present invention relates to a chemical analysis device. Background technique [0002] Regarding the method of extracting DNA from a liquid sample containing DNA, WO 00 / 78455 discloses a microstructure and a method for inspection by amplification. In this device, the DNA mixture is passed through a glass filter as an inorganic matrix, and then washing and eluent are passed through to recover only the DNA. The glass filter is installed on a rotatable structure, and reagents such as washing liquid and eluent are kept in the reservoir of each reagent in the same structure. Each reagent flows under the action of centrifugal force generated by the rotation of the structure. The valve on the micro flow path connecting each reagent reservoir and the glass filter allows the reagent to pass through the glass filter. [0003] As a chemical analysis device that extracts and analyzes specific chemical substances such as nucleic acid from a sample containing multipl...

AI Technical Summary

Problems solved by technology

When using a pump to transport multiple reagents through liquid, the reagents remain on the flow path wall, especially when the liquid is easy to remain on obstacles such as valves, once the remaining liquid does not flow, it may be in the confluent part with other reagents Pollution occurs on

In addition, when using valves to switch the washing liquid and eluent that have passed through the captured components to flow to each chamber, because the washing liquid that flows to the waste liquid chamber first pollutes the upstream flow path such as the valve that switches to the reaction chamber, So there is a risk of mixing the washing solution with the eluent

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