Test tube rack position sensing device and tester

Abstract

The invention discloses a test tube rack conveying position sensing device and a tester, the test tube rack conveying position sensing device comprises a bracket, a test tube rack and a sensing mechanism, the sensing mechanism comprises a lever mechanism capable of swinging up and down and an optocoupler, the lever mechanism comprises a lever shaft and a lever fulcrum, one end of the lever shaft end is provided with a positioning structure, the other end of the lever shaft end is connected with the optocoupler, an elastic member for providing an upward force to the lever shaft is connected with the lever shaft between the lever fulcrum and the optocoupler, the test tube rack is provided with a stepped positioning rib, the upper surface of the positioning rib is provided with a groove, and the positioning structure and the groove are matched with each other. The tester comprises a test tube rack conveying position sensing device. The beneficial effects of the test tube rack conveying position sensing device are that the tensile force of a spring is converted into directly-downward force of a press roller to the test tube rack on the basis of the principle of lever, the pressure is reliable, positioning is accurate; an integral structure is used for fixing the press roller and the optocoupler on the bracket, reliability is high, structure is simple, cost is low, and the risk of sampling failure, partial inserting of a sampling needle and damage of the sampling needle can be avoided.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a test tube rack position sensing device and a tester in clinical test sample testing and analysis equipment. Background technique [0002] Clinical laboratory analysis is the technology of taking clinical test samples out of the human body, testing and analyzing them with corresponding testing instruments and reagents, and performing in vitro diagnosis based on the results. [0003] The automation of clinical laboratory analysis instruments is manifested in two aspects, one is the automation of sample delivery, and the other is the automation of sample detection. Among them, the automation of sample delivery is called automatic sampling in the industry, which refers to the process of automatically delivering clinical test samples to the instrument. This process requires batch loading of test tubes containing samples on special test tube racks. The loading, pushing and unloading o...

AI Technical Summary

Problems solved by technology

Unable to monitor the small displacement deviation of the test tube rack, unable to set precise displacement accuracy parameters, and unable to timely alarm for position abnormalities

The existing technology is mainly designed based on the initial stage of the development of my country's clinical test automatic analyzer. The instrument itself runs at a low speed. The instrument does not have high requirements for automatic sample injection operation accuracy and positioning accuracy, and there is no need for small displacement deviation alarms.

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