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Device and method for analysing a liquid sample

A test solution and reagent technology, applied in the field of test solution, can solve the problems of inaccurate detection and other problems, and achieve the effects of fast reaction, short diffusion stroke and short flow stroke

Inactive Publication Date: 2006-08-02
BOEHRINGER INGELHEIM MICROPARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this test filter only allows relatively imprecise qualitative detection of the analyte

Method used

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  • Device and method for analysing a liquid sample
  • Device and method for analysing a liquid sample
  • Device and method for analysing a liquid sample

Examples

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Embodiment Construction

[0018] In the drawings, the same reference signs are used for the same or similar parts, wherein corresponding or comparable properties and advantages can be achieved even if repeated descriptions are omitted.

[0019] figure 1 A part of a first embodiment of a proposed device 1 for testing a test solution 2 , in particular blood plasma or the like, is shown in schematic sectional view.

[0020] The device 1 has a channel 3 for receiving and transporting a test solution 2 by capillary force. The channel 3 is preferably delimited or formed by only two opposing, in particular substantially flat, surfaces or flat sides 4 and 5 .

[0021] The device 1 has a preferably flat mount 6 and an associated cover 7 , between which the channel 3 is formed. In the illustration, only the frame 6 is hollowed out to form the desired microstructure, while the cover 7 is flat, preferably at least substantially un hollowed out. But this can also be reversed. If required, however, both the fram...

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Abstract

The invention relates to a device and a method for testing test solution, the test solution flows on the upper side of a channel flat side face on lateral direction and / or in layer shape, medicament which is soluble and / or has reaction on the flat side face is fully filled in a reaction portion by the test solution, and the reaction volume of the test solution is limited, the reaction volume is temporarily kept in the reaction portion which is used to dissolve and / or lead medicament to react, at least 90% of the medicament is dissolved in the limited reaction volume of the test solution or has a reaction with the limited reaction volume, and the medicament which is dissolved or reaction products flow into a testing portion which is constituted by a channel and is afterwards arranged in the reaction portion with the reaction volume together after the reaction products are kept 90%, or the maximum concentration variation of the medicament of the reaction products in the reaction volume of the testing portion is 10%, effect side of liquid which basically is a direct line or test solution which basically has no flow section variation flows in the testing portion from the reaction portion. Compared with the prior art, the invention can achieve more accurate test, in particular to quantitatively test analyte in the test solution.

Description

technical field [0001] The present invention relates to devices and methods for testing test fluids, such as blood, plasma, urine, saliva or similar liquids. Background technique [0002] The present invention relates to microfluidic systems or devices. The following description relates to devices in which capillary forces play a role and in particular determine the function. [0003] For test test solutions, in particular for the determination of blood sugar, blood lipids, enzymes or other values, so-called test filter strips are often used which consist of paper, film, filter layer, membrane or the like. Such a test filter rod is used for inspection tasks and also assumes the transport function. For example, the test solution is transported in the test filter strip due to capillary forces in the fibrous mesh material. The test solution can react with previously added reagents and cause a color change, for example, when detecting an analyte in the test solution. However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/48G01N33/50G01N35/00
CPCB01L2200/0605B01L2300/165B01L2200/0684B01L2300/0825B01L2200/16B01L2400/0688B01L2400/086B01L2400/0406B01L3/502738B01L3/50273
Inventor G·布兰肯施泰因R·-P·彼得斯T·威尔斯C·马夸特C·舍恩
Owner BOEHRINGER INGELHEIM MICROPARTS
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