The analyser of erythrocyte deformation has been worked out, it allows one to obtain the distribution of the cells according to the deformation degree. The analyser consists of optic electronic block, sample insert unit, signal transformation unit and the information processing unit. The analyser is based on the principle of the small angle light dispersion of laser radiation registration made on each erythrocyte of the population, which was extended due to the influence of the shift efforts when the cell is passing through the narrow measuring capillary. The analyser was tested with the suspension model, normal and pathological blood samples. The analyser can be used for diagnosis and treatment of diseases related to the rheological blood properties.
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