Sample uniform mixing mechanism

Abstract

The invention discloses a sample uniform mixing mechanism, which comprises a support, wherein the support is provided with a sample container seat used for placing a sample container; and a uniform mixing driving mechanism, which is used for driving the sample container to do conical pendulum motion. The mechanism also comprises an anti-rotation mechanism used for preventing the sample container from rotating around the axis of the sample container in the process of performing the conical pendulum motion. According to the sample uniform mixing mechanism disclosed by the invention, the uniform mixing driving mechanism is arranged to drive the sample container to do the conical pendulum motion, so that samples in the sample container generate eddy current to realize sample mixing, but if the sample container rotates in the conical pendulum motion process, the eddy current may be weakened or even cannot be generated, the uniform mixing effect is reduced, and even the samples cannot be uniformly mixed; by arranging the anti-rotation mechanism, the sample container can be prevented from generating rotation or only generating slight rotation in the process of performing conical pendulum motion, so that eddy current in the sample container is not influenced by rotation, and the sample uniform mixing efficiency and the uniform mixing effect can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a sample mixing mechanism. Background technique [0002] At present, there are two methods of blood collection clinically: collection of venous whole blood and collection of peripheral blood. Among them, the blood collection volume of venous whole blood is generally about 2-3mL, which is suitable for adults and other patients who are convenient for blood collection; while the blood collection volume of peripheral blood is generally about 80-100ul, which is suitable for children and other patients who are inconvenient for blood collection. [0003] After the collected blood sample is still for a period of time, the blood will be stratified, and heavy cells will settle at the bottom of the test tube, which will lead to uneven components in the collected sample, and blood cell counting cannot be performed. In order to solve this problem, clinically, the collected venous who...

AI Technical Summary

Problems solved by technology

[0005] Specifically, the lifting mechanism is mainly used to realize the positioning of the mixing ejector rod in the vertical direction in the mixing mechanism. The mixing mechanism uses the eccentric wheel to drive the card to move vertically up and down along the linear guide rail, thereby driving the test tube to move vertically up and down. Although exercise can achieve sample mixing to a certain extent, due to the small amount of blood sampled from peripheral blood and poor fluidity, the mixing method of only doing up and down movements cannot achieve a good mixing effect

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