Test instrument for detecting electrolyte item and total carbon dioxide

Abstract

The invention relates to a test instrument for detecting electrolyte item and total carbon dioxide, wherein a power part for forming a liquid path comprises an aspirating needle which is fixed on a two-freedom rotary arm and is connected with a second two-way flow valve by a pipeline; the second two-way flow valve is connected with a main liquid suction push pump; a first two-way flow valve is connected with a cleaning pump and a cleaning liquid bottle by a pipeline; a measurement part for forming the liquid path comprises a reverse push flow injection hole, an electrolyte sensor module, a carbon dioxide reaction tank, a one-way flow valve and a waste liquid bottle which are sequentially connected by a pipeline; and the carbon dioxide reaction tank is connected with a carbon dioxide sensor by a two-way air valve. Compared with the prior art, the test instrument has the advantages that 1. after an ion test module formed by a plurality of ion-selective electrodes is adopted, the content of multiple electrolytes can be measured by a direct method; 2. the attachment is reduced to the utmost extent, so that cross contamination is reduced; and 3 the influence to the test accuracy caused by a long pipeline arranged behind the aspirating needle and the residual liquid of a pump valve part can be avoided.

Description

technical field [0001] The invention relates to a medical inspection and testing instrument, in particular to a testing instrument for detecting electrolyte items and total carbon dioxide. Background technique [0002] At present, in addition to the enzymatic testing of electrolytes used in large-scale automatic biochemical analysis instruments, ion electrodes have become low-cost, fast, and convenient clinical routine testing methods for electrolytes, replacing traditional methods such as manual titration and flame photometers. , There are many domestic manufacturers of this type of instrument, mainly the semi-automatic and quasi-automatic equipment described above. Fully automatic equipment capable of sampling all test tubes requires liquid level detection, a sample turntable composed of an independent moving arm with up and down degrees of freedom and rotation degrees of freedom, and a deep layered hanging basket. The control complexity and precision are far greater High...

AI Technical Summary

Problems solved by technology

Fully automatic equipment capable of sampling all test tubes requires liquid level detection, a sample turntable composed of an independent moving arm with up and down degrees of freedom and rotation degrees of freedom, and a deep layered hanging basket. The control complexity and precision are far greater Higher than quasi-automatic devices that only use special specimen cups

At present, there is almost no automatic electrolyte analysis equipment as mentioned above in China, and due to the wide application of large-scale biochemical equipment in foreign countries, no such equipment has been launched separately

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