| 摘要 |
<p>An apparatus for electrochemical screening and early diagnosis of malignant tumor comprises an immunoassay chip (1), a time resolution multi-channel constant potential device (2), and a data processing and displaying system (3). The immunoassay chip (1) is connected with the time resolution multi-channel constant potential device (2) via an nterface, and the time resolution multi-channel constant potential device (2) is connected with the data processing and display systeming (3) via an interface. The immunoassay chip (1) comprises eight work electrodes fixed respectively with a different antigen molecule functional film, Ag wires (a), an Ag/AgCl reference electrode (b), a carbon counter electrode (c), and an insulating film (d). Some of the enzyme labelled antibodies are connected to the surfaces of the electrodes to acquire catalyzing current and acquire indirectly the quantities of the eight antigens to be measured in the solution, by means of the antigen molecules fixed on the electrode surfaces competing with the antigen molecules for the enzyme labelled antibodies in the warm culture solution. The assay results are processed by the software and displayed in visual image colors with legibility.</p> |
