This article studies the calibration method of blood transfusion and infusion heating device, which will provide effective reference for the metrological performance evaluation of the device. Calibration methods for key technical parameters of the device, such as temperature indication error, temperature fluctuation, and temperature uniformity, are designed. 7 different types of blood transfusion and infusion heating devices widely used in the hospital are selected to evaluate the feasibility of the calibration method. The calibration results prove that the designed calibration method for blood transfusion and infusion heating device can improve the metrological traceability system of the device, ensure the safety and effectiveness of its performance, and reduce clinical risks.
Fast nucleic acid analyzer has developed rapidly recently due to the spread of COVID-19 virus. In order to calibrate the temperature parameters of fast nucleic acid analyzer, it is necessary to study its temperature field distribution and temperature change curve, so as to put forward a scientific and accurate temperature field simulation model. This article studies the heat transfer mechanism of the heating module of the fast nucleic acid analyzer based on the finite element method by using CATIA three-dimensional modeling software and ANSYS Meshing platform, and the dynamic simulation model of the temperature field is obtained by studying two typical types of fast nucleic acid analyzers. Thus, this article provides a basis for the research on the calibration device of the fast nucleic acid analyzer, and the simulation model can be used to verify the reliability of the calibration device.
This article studies the key technical parameters such as “short wavelength boundary,” “energy density,” “energy output uniformity,” and “pulse duration” of xenon light source equipment for therapeutic use, determines the measurement standard, and presents an applicable metrological performance evaluation method for the equipment. The evaluation procedure presented in this article has been performed on several typical types of xenon light source equipment for therapeutic use widely used in China, and the experimental results show that the evaluation method presented in this article is scientific and effective, and can be adopted for the periodic calibration of the equipment, in order to establish the metrological traceability system of the equipment.
Infant phototherapy incubator is widely used in medical institutions to reduce the concentration of bilirubin in the body of infant while maintaining the body temperature of the infant. This article presents a novel design of calibration procedure to measure the instruments’ metrological parameters such as "error of total irradiance for bilirubin after pre-ageing", "relative local distribution of total irradiance for bilirubin after pre-ageing", "uniformity of incubator temperature", "accuracy of skin temperature sensor", "relative humidity indication error" and "accuracy of oxygen sensor" in order to ensure the accuracy and reliability of infant phototherapy incubator. The experimental results show that the calibration procedure presented in this article can ensure the metrological traceability of infant phototherapy incubators in daily use.
This article presents a novel design of reference light source and physical calibration method for optical performance evaluation of micro-plate chemiluminescence analyzers in order to substitute for traditional biological and biochemical methods. The reference light source is designed according to the working principle, and technical characteristics such as repeatability, stability, interference among wells, differences among channels and linearity of micro-plate chemiluminescence analyzers. The calibration results of 4 typical types of micro-plate chemiluminescence analyzers show that the reference light source and physical calibration method presented in this article can well simulate different chemiluminescence reagents and meet the requirements of luminous intensity calibration for chemiluminescence analyzers with the advantages of simple structure, good applicability, low cost and accurate and reliable measurement results.
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