Patent ID: 7811521
Filing Date: 2010-10-12
Classification: B01L,Y10T

Abstract:
1. A testing microchip, comprising: a substrate in which a series of flow channels are formed, the series of flow channel comprising a plurality of flow channels; a reagent storage section formed in the substrate for storing reagent, the reagent storage section in fluid communication with the series of flow channels for feeding reagents to the series of flow channels; a specimen storage section formed in the substrate for storing a specimen, the specimen storage section in fluid communication with the series of flow channels for feeding the specimen to the series of flow channels; a reaction section formed as a section of the series flow channels in the substrate, down stream of the specimen storage section in which a reaction between the specimen and the reagent takes place; a detection section formed in the substrate and in fluid communication with the series of flow channels downstream of the reaction section, for performing a predetermined test on a reaction product from the reaction section; a plurality of liquid feed control sections formed in the plurality of flow channels, each one of the liquid feed control sections having a liquid feed control path having a cross sectional flow area smaller than a cross-sectional flow area of the flow channel in which each one of the liquid feed control sections is formed, the cross-sectional flow area of each one of the liquid feed control paths having a width smaller than a width of the cross-sectional flow area of the plurality of flow channels in which the liquid feed control sections are formed and the cross-sectional flow area of each one of the liquid feed control paths having a depth smaller than a depth of the cross-sectional flow area of the plurality of flow channels in which the one of the liquid feed control sections are formed; a plurality of gas bubble trapping structures formed in the plurality of flow channels, each one of the gas bubbles trapping structures formed upstream of and adjacent to one of the plurality of liquid feed control sections, each one of the gas bubble trapping structures having a buffer path having a cross sectional flow area and said buffer path having a width substantially the same as the width of the cross-sectional flow area of the flow channel in which each one of the gas bubble trapping structures is formed; and said buffer path having a depth smaller than the depth of the cross-sectional area of the flow channel in which each one of the gas bubble trapping structures is formed.