Blood-gas analyzer

Abstract

The invention relates to a blood-gas analyzer. The blood-gas analyzer comprises a test card assembly and a reagent pack assembly, wherein the test card assembly at least comprises a test card main body provided with a calibration solution port; the reagent pack assembly at least comprises a rotary switch assembly, a solution storage device, a gas inlet device and a sampling device provided with a feeding needle, the rotary switch assembly comprises a first orifice communicated with the solution storage device, a second orifice communicated with the sampling device, a fixed valve body of a third orifice communicated with the gas inlet device as well as a rotary main body provided with a communicating tube, two ends of the feeding needle are communicated with the second orifice and the calibration solution port respectively, and the rotary main body is arranged in the fixed valve body and can rotate relative to the fixed valve body so as to realize communication between the first orifice and the second orifice, communication between the second orifice and the third orifice or closing of the second orifice. The blood-gas analyzer realizes on-off control of different tubes by the aid of the rotary switch assembly, does not need actions of compressing and releasing a rubber tube, avoids the hidden danger of tube blockage and prevents the calibration solution from leaking.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to a blood gas analyzer. Background technique [0002] The blood gas analyzer is a commonly used medical device. There is a reagent pack inside the blood gas analyzer, and the reagent pack stores a calibration solution, which is used to calibrate the electrode to be tested. In order to ensure the stability of the calibration solution components, it must be well sealed. The reagent kits on the market are mainly composed of housings, hoses, hose valves, etc. The rubber hose valve can be inserted around the assembly position of the housing, so that the hook part is inserted into the clamping hole, and the housing and the hose valve press the rubber hose to realize the shutdown of the rubber hose; the hook part is separated from the clamping hole, and the housing and the hose valve are released For the compression of the hose, the hose relies on its own elasticity to lift the valve o...

AI Technical Summary

Problems solved by technology

Although this method can realize the on-off control of the rubber hose, it has the following disadvantages: during transportation and storage, the reagent package needs to rely on the rubber hose valve to compress the rubber hose for a long time to prevent the calibration liquid from leaking. Together, it cannot rebound, causing pipeline blockage; the action of the valve to compress the rubber hose is unreliable, and there is a hidden danger that the section of the pipeline cannot be completely crushed to cause liquid leakage

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