Sampling device for automatic immunization system and sampling method

Abstract

The invention discloses a sampling device for an automatic immunization system and a sampling method. The sampling device comprises a sampling arm. The sampling arm comprises a crossbeam with one end connected with an output terminal of an output shaft and the other end provided with a cylindrical sampling head coupling mechanism. The sampling head coupling mechanism includes a middle cavity chamber penetrating from top to bottom; an opening at top of the sampling head coupling mechanism is connected with a connection part of a three-dimensional communication valve; the other two connection parts of the three-dimensional communication valve are respectively connected with a connection part of a negative pressure generating mechanism and a connection part of a plunger pump through corresponding fluid path pipes; a differential pressure sensor is arranged on the fluid path pipe between the three-dimensional communication valve and the sampling head coupling mechanism. The sampling method comprises a sample liquid absorption process based on the above sampling device. The invention can realize a function of automatic detection on a sample liquid level and liquid absorption sampling by the sampling head, has high sampling precision; besides usage of a disposable TIP head reduces cost and avoids cross contamination.

Description

technical field [0001] The invention relates to a sampling device and a sampling method, in particular to a sampling device and a sampling method used in a fully automatic immune system. Background technique [0002] Fully automatic immune system is a common equipment for routine testing in clinical practice, including fully automatic microplate reader, enzyme immunoassay workstation, fully automatic chemiluminescence instrument, sampling device, etc. In the fully automatic immune system, in order to ensure the accuracy of the test results, the key task is to ensure that the samples do not cross-contaminate between various equipment, and the sampling device is the core equipment to avoid cross-contamination. [0003] The existing sampling device includes a sampling arm, which is controlled by a sampling arm control mechanism to move up and down and rotate, and a steel needle for sampling is installed on the sampling arm. Although the sampling device can realize the function...

AI Technical Summary

Problems solved by technology

Although the sampling device can realize the function of sampling, there is a greater risk of cross-contamination in steel needle sampling, and the accuracy in absorbing liquid is not high

[0004] In addition, there are currently imported disposable conductive plastic sampling heads, which can better avoid cross-contamination. However, the price of this sampling head is about ten times that of ordinary TIP heads. Therefore, the cost of testing High, limited popularization

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