Uncapping mechanism of test tubes

Abstract

The invention provides an uncapping mechanism of test tubes. The uncapping mechanism is used for removing caps of the test tubes and capping the test tubes and comprises a claw, buttons, a cover plate cavity, a transition cavity, a linear motor, a motor screw, a supporting metal plate, an upper gasket, a claw sealing plate, a claw fixing plate, a hook, a transition plate, a lower gasket, a first compression spring, a screw nut and a second compression spring. The uncapping mechanism of the test tubes is used for clamping the caps of the test tubes, and the caps of the test tubes can be clamped on the condition that external force exerted on the caps of the test tubes is reduced. In the process of removing the caps of the test tubes, the caps of the test tubes can simultaneously rise, rotate and cover the test tubes again. The uncapping mechanism is adaptable to the test tubes and the caps of the test tubes of different heights.

Description

technical field [0001] The invention relates to a test tube cap removing mechanism, which belongs to the field of medical instruments. Background technique [0002] At present, medical blood collection tubes are usually vacuum blood collection tubes, which realize the blood collection function through negative pressure. In the process of analyzing blood samples by clinical laboratory instruments, the following two methods are generally used: [0003] 1. Remove the test tube cap in advance, and use a disposable plastic needle for blood sample extraction; [0004] 2. Use hard needles such as steel needles to penetrate the test tube cap to realize the extraction of blood samples. [0005] In the second solution, the sampling needle needs to be used multiple times, and in order to avoid cross-contamination between samples, it is necessary to provide an additional cleaning mechanism for the sampling needle. Therefore, the first method is adopted, that is, the cap of the test t...

AI Technical Summary

Problems solved by technology

It is only suitable for tubes of a single height size, there is no solution for tubes of different heights

As far as the current functional requirements are concerned, it is necessary to open the test tube cap and cover the test tube cap after sampling. The above-mentioned solution is difficult to achieve this functional requirement.

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