Patent ID: 7718127
Filing Date: 2010-05-18
Classification: G01N

Abstract:
1. A microfluidic chip for biological, chemical, and medical analysis, in which cavities and channels that connect the former with one another, which channels transport fluids required for the analysis, on the basis of the capillary effect, are disposed, whereby at least one of these cavities is a reaction chamber comprising a layered construction of light-curing hydrophilic plastic material, on the basis of a 3D layer model, and a cover layer made of a hydrophobic material, whereby channels that come out of different cavities, and run without intersections in the layer body structured from hydrophilic material empty into the at least one reaction chamber, wherein a central cavity covered by the hydrophobic layer is generated in the chip, which cavity is surrounded by a ring cavity configured in ring shape, which also has openings covered by the hydrophobic layer, separated from one another by means of crosspieces, from which openings one channel, in each instance, leads to a reaction chamber assigned to the opening, which reaction chamber is disposed around the central cavity and around the ring cavity, with other reaction chambers, in star shape, while channels that are placed in the surface of the crosspieces, bridging the ring cavity, lead from the central cavity to the assigned reaction chamber, in each instance, whereby the channels that proceed from the ring cavity as well as from the central cavity make a transition into grooves that are open towards the interior of the cavities and rise in the walls of the cavities, in perpendicular manner.