Waste liquid suction mechanism, reaction tray and sample analyzer

Abstract

The invention provides a waste liquid suction mechanism, a reaction plate and a sample analyzer. The waste liquid suction mechanism includes a drive assembly; a lift assembly, which moves up and down under the action of the drive assembly; Including a trigger position and a release position below the trigger position; a suction needle assembly, which is arranged on the lifting assembly and moves up and down with it, including a suction needle for sucking waste liquid; a collection assembly, arranged below the suction needle assembly, including a suction needle Rotary stop to block or release the needle. The invention solves the problem of residual liquid and crystallization contaminating the reaction chamber after the detection of the reaction liquid, reduces the moving executing parts and driving parts, reduces the cost, saves the installation space, and makes the mechanism structure more compact.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a waste liquid suction mechanism, a reaction plate and a sample analyzer. Background technique [0002] At present, the waste liquid suction device can be used for the extraction or separation of laboratory liquid samples, and is especially suitable for extraction of the detected waste liquid. Most of the waste liquid suction devices in the industry only have one lifting stroke. After the suction needle has absorbed the waste liquid, it hovers above the reaction chamber, and the long-term accumulation of liquid droplets and waste liquid crystals on the suction needle are easy to fall randomly. In the reaction chamber, if it falls into the reaction liquid to be tested, the detection accuracy will be affected. Therefore, such devices often require regular maintenance. [0003] In other devices, by adding a horizontal mechanism, the suction needle can be withdra...

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a waste liquid suction mechanism, a reaction tray and a sample analyzer, which are used to solve the problem of residual liquid after the detection of the reaction liquid in the waste liquid suction device in the prior art. and crystallization can contaminate the reaction chamber and reduce movement of the actuator

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