Vibrating blending device of semi-automatic blood coagulation analyzer

Abstract

The invention discloses a vibrating blending device of a semi-automatic blood coagulation analyzer, comprising a constant-temperature chamber, wherein the constant-temperature chamber is of a rectangular structure; a photoelectric detector, vibrating chambers and a stop dog are sequentially and cyclically arranged in the long side direction in the constant-temperature chamber; multiple groups of electromagnetic coils which are symmetric to one another are arranged at the upper side and the right side of the constant-temperature chamber, and each group of symmetric electromagnetic coils are located at two sides of one vibrating chamber; a support spring, a fixed plate and a vibrator are sequentially fixed at the bottom of the vibrating chamber by the base, and a locating slot is formed at the top of the vibrator to be used for placing a test cup; and steel balls are arranged in the test cup and are fixed on the side wall of the vibrating chamber by a clamping device. According to the invention, the dynamic condition of the steel balls is monitored by using the photoelectric detector, the time from adding of reagent to clotting of plasma is recorded to be used for calculating a testresult, so as to avoid influence of sample color change to the detection result; and meanwhile, by using the vibrator to blend plasma and reagent, the mixing uniformity is improved, influence to the detection result caused by non-uniform mixing is avoided, and the detection accuracy is improved.

Description

Technical field [0001] The invention relates to the technical field of medical equipment for detection, in particular to a vibration mixing device of a semi-automatic blood coagulation analyzer. Background technique [0002] The blood coagulation analyzer is divided into coagulation method, chromogenic substrate method and immunoturbidimetric method according to the test method. The most commonly used prothrombin time (PT), activated partial thromboplastin time (APTT), fibrinogen (FIB), thrombin time (TT), endogenous coagulation factors, and exogenous coagulation in hemostasis / thrombosis tests Factors, high molecular weight heparin, low molecular weight heparin, protein C, protein S, etc. can all be measured by the coagulation method. The optical principle blood coagulometer used in the coagulation method is easily affected by the vibration mixing device. For example, the uneven mixing of plasma and reagent affects the coagulation time of the plasma, thereby reducing the measure...

AI Technical Summary

Problems solved by technology

The optical principle used in the coagulation method is easily affected by the vibration mixing device. For example, the uneven mixing of plasma and reagents affects the coagulation time of plasma, thereby reducing the measurement accuracy of the coagulation instrument.

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