注射泵应用中辅助器材选择要素的实验研究

Experimental study on selection of auxiliary appliance during application of injection pump

目的 :通过实验发现临床医疗在使用注射泵时2项关键性能指标注射速率与容量误差产生的规律,研究其程度和大小与不同规格注射器及延长管的相关性,为临床医疗注射泵应用质量控制奠定理论基础并提供科学依据。方法:通过设计模拟实验,分别选用10、20和50 ml注射器及80、120 cm压力延长管,形成6种辅助器材组合的连接系统;依次获取流量测试仪的注射速率和流量读数与注射泵设定值的对比,验证注射剂量和速率的精确度与选择不同规格型号的辅助器材存在的关联性。结果:在其他条件相同的情况下,选择容量大的注射器,可以获得更精确的注射速率控制效果;使用较短的压力延长管控制注射精度的效果优于长度较长的延长管;选择容量大的注射器,可以获得更精确的注射剂量控制效果;选择较短的延长管在注射剂量控制精度上相对优于较长的延长管。结论:该实验能为注射泵使用中辅助器材的选择提供理论依据和实践指导,有助于提高医疗质量控制效果。进一步的深入研究,可对注射器的工艺设计和材料选择提供科学参考。

Objective To execute experimental study injection rate and volumetric error and to explore their correlations with sizes of injectors and extension tube, so as to lay a foundation for the quality control of the injection pump. Methods Simulation experiment was carried out with involving in 10, 20 and 50 ml of injectors and 80 and 120 cm extension tubes,and 6 kinds of connection systems were formed with auxiliary appliances. The injection rate and flow reading of the flow meter were obtained and then compared with the set values, and the correlations were proved between sizes of auxiliary appliances and the precision of injection dose and rate. Results In case other conditions kept the same, the injector with larger capacity behaved better in controlling injection rate and dose, and the shorter extension tube gained advantages over the longer one in regulating the precision for injection and injection dose. Conclusion The experiment contributes to the selection of auxiliary appliances and the enhancement of quality control, and the further research provides references for process design and materials selection of the injector.