Laser blood cell counter

Abstract

The invention relates to a laser haematimeter count instrument, the count instrument includes electronic circuit and in turn lasers, condenser lens group, sheath flow record boxes, receive convex lens, photoelectric tubes, laser light source, axis of condenser lens Group, the translucidus hole of sheath flow record boxes, axis of receive the convex lens, receive light head of photoelectric tube set on the same optical axis line, bloodshot mouth on the bottom of sheath flow record box connect sample cup of diluting blood with lay tube of diluting blood, the draft tube of sheath flow record box connect with sheath fluid balance Cup, the sheath flow exports at the top of the mouth above the sheath flow record box connect negative pressure suction means with pipeline, the center line of bloodshot mouth and sheath flow exports across the core line of the above light path, the cross point lie in concourse light spot of the condenser lens group. In the absence of micropore electrodes, the air-logged problem does not exist; This equipment is no need for the special dilution of expensive reagents, general saline can satisfy requirements.

Description

technical field [0001] The invention relates to a blood cell counter, in particular to an automatic laser blood cell counter which can count and classify red blood cells, white blood cells, platelets and hemoglobin by adopting a laser collimation light path. Background technique [0002] At present, most of the blood cell counters adopt the measurement principle of impedance method. There are very few five-class high-end blood cell instruments in the world that use laser for leukocyte classification, but the basic parameters of the instrument, such as red blood cells, platelets and other white blood cell counts, cannot be separated from the impedance method. There are no blood cell counters that use laser technology. [0003] The principle of the impedance method is as follows (as shown in Figure 1 and Figure 2). The diluted sample 3 is extracted from the sampling needle of the micropore 1 by using a negative pressure pump, and passes through the sensor electrode 2. Due to t...

AI Technical Summary

Problems solved by technology

The shortcomings of using the impedance method blood cell counter are: firstly, the size of human blood cells is distributed between 2-18 microns, and the use of the principle of impedance method requires an 80-micron microporous electrode, which brings the frequent inconvenience of impedance method instruments. Problems affecting count due to hole plugging

Secondly, the working principle of the impedance method determines that the instrument needs a special diluent and cleaning agent, which limits its application range

In addition, because the micropore measurement principle of the impedance method has high requirements for the user's site environment (air dust), the technology used (such as blood sample clot), and the purity of the diluent (microparticle concentration), it is summarized as the use requirements Higher, higher cost of use

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