Perlong blood and the basic principle of the analyzer development profile

From the current hospital medical equipment of various departments to use situation, obviously, blood analyzer has become one of the essential medical devices clinical. Well, for the blood of development and general principle analyzer what kind of? Next, let small make up simple to introduce some.

             The earliest blood analyzer is using capacitive and photoelectric colorimetric method of principle, can only determine the red and white blood cells, and easy by various factors of interference. In 1948 Mr Coulter the principle to determine the impedance in the blood of the visible part, make the determination of the accuracy of the results and correctness get a large degree of progress.

But impedance method can only determine the size of the cells. In the 1980 s, the laser principle started to use blood analyzer, and by using the impedance method and the principle of laser method, not only can determine the size of the cells can determine the shape of the nucleus. In the eighty s, for the development of high energy electromagnetic wave technology, the United States, the company's stock impedance, laser and high technology and the electromagnetic wave a cell for testing, again through the comprehensive analysis of the data in cell classification. Due to high energy electromagnetic wave technology in cells can detect the grain size and density.

And the German bayer company, the cell chemical reaction and laser technology of combining the principle, the white classification detection. Because neutrophils cytoplasm contains full measure of peroxidase, mononuclear cells is the second smallest, and primitive cells rarely, lymph and basophilic cells lack of the enzyme. So, the instrument can use peroxidase role for neutrophils and lymph and basophilic cells for classification. The simultaneous flow cytometry analysis technology on the net woven red blood cells to count and classification.

Using naive cells and mature the cell membrane lipid content of many different and cell membrane to the amount of amino acid sulfide with different, in join hemolysis agent of cell membrane protection ability after different principle, classification of childish cells. With the development of science and technology, the blood of the analyzer test method will be more perfect, more correct.

Article: from perlong medical (http://www.pl999.net)
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