Magnetic bead cleaning and separating device for full-automatic chemical luminescence immunity analyzer

Abstract

The invention relates to a magnetic bead cleaning and separating device for a full-automatic chemical luminescence immunity analyzer. The magnetic bead cleaning and separating device comprises a supporting frame, a reaction cup and an electromagnet group, wherein a reaction cup bracket is horizontally arranged on the upper part of the supporting frame; an electromagnet group bracket is mounted in the middle of the supporting frame; the reaction cup is fixed on the reaction cup bracket; a liquid absorbing needle and a liquid injecting needle are arranged above the reaction cup; the liquid absorbing needle and the liquid injecting needle are moved down and inserted into the reaction cup; the liquid injecting needle injects a reaction liquid and the liquid absorbing needle absorbs a reaction liquid in sequence, so that magnetic beads in the reaction cup are cleaned; the electromagnet group is clung to the outer wall of the reaction cup and mounted on the electromagnet group bracket; the electromagnet group is one group of electromagnets which are uniformly arranged up and down; the electromagnets independently act or simultaneously act according to a certain time sequence, and the magnetic beads in the reaction liquid are adsorbed by virtue of the electromagnetic fields produced by the electromagnets, so that mobile separation of the magnetic beads in the reaction liquid is realized. The magnetic bead cleaning and separating device is simple in structure, small in size, less in magnetic bead separation loss, and mainly suitable for non-destructive cleaning and separating of magnetic beads in medical equipment.

Description

technical field [0001] The invention relates to an auxiliary device of a medical detection instrument, in particular to a magnetic bead cleaning and separating device of a fully automatic chemiluminescence immunoassay analyzer. It is mainly suitable for washing and separating magnetic beads in chemiluminescent immunoassay equipment. Background technique [0002] As we all know, with the improvement of living standards, people pay more attention to health, and the testing items of medical units are increasing day by day. Among them, immune testing is an important means of in vitro diagnosis, and its results are extremely important for the prevention and diagnosis of major infectious diseases, cancer, diabetes and other diseases. Significance. At present, the mainstream equipment for immunoassays in hospitals is blood detection analyzers based on the principle of chemiluminescence. Due to the wide application of chemiluminescence technology in immunoassays, higher requirement...

AI Technical Summary

Problems solved by technology

The disadvantages of the above separation device are: 1) Permanent magnets are a kind of magnetic material, and the residual magnetism is inconvenient to accurately control during production, and the selection of permanent magnet materials is relatively high; 2) Although the magnetic beads pass through the force of the magnetic field during the cleaning and separation process Tighten and suspend in the reaction solution, but it will inevitably cause a large loss of magnetic beads during the cleaning process, which will have a certain impact on the accuracy of optical detection

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