Blood-gas analyzer and detection method thereof

The technology of a blood gas analyzer and an analysis cup is applied in the field of medical equipment and analysis, and can solve the problems of being unfavorable for the use of small and medium-sized medical institutions, and the investment cost is high.

Inactive Publication Date: 2017-01-04
SINNOWA MEDICAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The investment cost is high, which is not conducive to the use of small and medium-sized medical institutions

Method used

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  • Blood-gas analyzer and detection method thereof
  • Blood-gas analyzer and detection method thereof
  • Blood-gas analyzer and detection method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 As shown, a blood gas analyzer includes a blood sampling device, a blank reagent sampling device, a cleaning reagent sampling device, a waste liquid recovery device, an electrochemical detection device, an optical detection device, a three-channel rotary valve, and a two-channel rotary valve ; The three-channel rotary valve 7 is made up of two mechanical discs A, B, such as Figure 4 As shown, the mechanical discs A and B are rotatable on the same axis. There are three holes 9, 10, and 11 on the mechanical disc A. There is a hole 12 on the mechanical disc B. The four holes have the same size. When B rotates relative to each other, the holes 12 on the mechanical disk B will coincide with the three holes 9, 10, and 11 on the mechanical disk A respectively; the dual-channel rotary valve 20 is composed of two mechanical disks C and D, as Figure 5 As shown, the mechanical discs C and D are rotatable on the same axis. There is a hole 21 on the mechanical di...

Embodiment 2

[0051] A blood gas analyzer, the other structures of which are the same as in Embodiment 1. In addition, the blood gas analyzer also includes an air-isolated reagent sampling device 31, which is connected to the optical detection device through a pipeline, and one end of the pipeline is connected to the hole on the mechanical disk D 22. The other end leads to the bottom position of the analysis cup 25 in the optical detection device, and the air-isolated reagent sampling device 31 leads to the mouth position of the analysis cup 25 through a pipeline. The paraffin wax is selected as the isolated air sampling reagent, which is used to isolate the liquid in the analysis cup 25 from the outside air. It is used to further improve the detection sensitivity of the optical detection device.

[0052] As a further improvement, the optical detection device further includes a magnetic stirring device. The magnetic stirring device includes a magnetic rod 30 in the analysis cup 25 and a mo...

Embodiment 3

[0055] The detection method of the above-mentioned blood gas analyzer comprises the following steps:

[0056] Step 1, rotate the three-channel rotary valve 7 to align the hole 9 on the A disc with the hole 12 on the B disc, and rotate the two-channel valve 20 to align the hole 21 on the C disc with the hole 22 on the D disc;

[0057] Step 2, part of the quantitative blank reagent is sequentially passed through the three-channel rotary valve 7, the electrochemical detection device 13, and the dual-channel rotary valve 20 into the analysis cup 25 in the optical detection device, and the absorbance values ​​at different wavelengths are measured;

[0058] Step 3, connecting the pipeline between the air-isolated reagent sampling device and the optical detection device, and injecting the air-isolated reagent into the upper layer of the blank reagent in the analysis cup 25;

[0059] Step 4, close the two-channel rotary valve 20, and align the hole 10 on the disc A of the three-channe...

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Abstract

The invention discloses a blood-gas analyzer and a detection method thereof. The blood-gas analyzer comprises a blood sample introduction device, a reagent blank introduction device, a cleaning reagent introduction device, a waste liquid recovery device, an electrochemical detection device, an optical detection device, a three-way rotary valve and a double-way rotary valve. Through the three-way rotary valve and the double-way rotary valve, electrochemical detection and optical detection are skillfully combined. A whole blood sample to be detected is subjected to pH and ion determination and simultaneously, the optical detection method determines oxidized hemoglobin and reduced hemoglobin. The blood-gas analyzer saves time, simplifies operation and reduces a patient seek treatment cost. The apparatus detection process is completely automatic so that the detection is convenient and fast and human influence is small.

Description

technical field [0001] The invention relates to a medical device and an analysis method, in particular to a blood gas analyzer and a detection method capable of rapidly and continuously detecting pH, ion concentration, oxidized hemoglobin, and reduced hemoglobin content in blood. Background technique [0002] Blood contains a variety of inorganic ions, the most important of which are three, namely sodium, potassium and chloride ions. Hemoglobin is an iron-containing complex allosteric protein in vertebrates, which is composed of heme and globin. Its function is to transport oxygen and carbon dioxide and maintain blood acid-base balance. Hemoglobin combined with oxygen is called oxyhemoglobin, and combined with carbon dioxide is called reduced hemoglobin. At present, in clinical testing in hospitals, different analyzers are used for the testing of these two types of data. The investment cost is large, which is not conducive to the use of small and medium-sized medical inst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/26G01N21/31G01N35/10
Inventor 曹宁钱亚如徐新朱建波李晓兰
Owner SINNOWA MEDICAL SCI & TECH
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