双通道医用输液泵自动校准系统开发

针对医用输液泵人工校准过程中存在的工作效率低、检测精度低、温度偏差与数据无法批量处理等问题,提出了一个基于间接式流量法的输液泵自动校准方案。通过实验标定特定玻璃管段的体积获得累计流量体积,对输液泵进行自动校准时通过测量注满所标定体积的时间得到累计时间,两者的比值即输液泵的平均流量。由此设计了一套双通道医用输液泵自动校准系统,可以对测量结果进行误差和重复性分析及不确定度评定并给出校准报告。验证实验表明,自动校准系统的相对误差可达到2%以内,满足相关规范5%的要求。该系统可重复测量同一输液泵在不同流量时的准确度,也可利用双通道同时对多个输液泵进行流量校准测试,以及校准输液泵的阻塞报警情况。

Research and Development of Dual-channel Medical Syringe Pump Automatic Calibration System

To solve the problems of low efficiency, low detection accuracy, temperature deviation and data batch processing in the manual calibration process of medical infusion pump, an infusion pump automatic calibration scheme based on indirect flow method was proposed. The volume of the specific glass tube segment was calibrated through experiments to obtain the cumulative flow volume, and the accumulative time was obtained by measuring the time of filling the calibrated volume when the infusion pump was automatically calibrated. Thus a dual-channel medical infusion pump automatic calibration system was designed, which can perform error and repeatability analysis and uncertainty evaluation of the measurement results and give a calibration report. The verification experiment shows that the relative error of the automatic calibration system can reach less than 2%, meeting the requirements of 5% of the relevant specifications. The system can repeatedly measure the accuracy of the same infusion pump at different flow rates, which can also use dual channels to simultaneously perform flow calibration tests on multiple infusion pumps, as well as to calibrate the blocking alarm condition of the infusion pump.