直立式聚丙烯输液袋长径比对输液性能影响的数值研究

发布时间：2019-05-16 05:18

【摘要】：研究直立式聚丙烯输液袋(简称直立式输液袋)长径比对袋体输液性能的影响,寻求最佳长径比。针对标示容量为100、250和500mL的三种袋型,分别设置5种不同长径比(1.5∶1、2∶1、3∶1、4∶1和5∶1),采用有限元方法模拟排液过程,研究袋体应力分布、排空率、加药空间及稳定性系数等参数的变化规律。在标示容量一定的条件下,排空率随长径比的增加而逐渐升高,而稳定性系数随长径比的增加而下降。长径比由1.5∶1到5∶1,3种标示容量直立式输液袋排空率的增幅和稳定性系数的降幅分别为:100mL直立式输液袋为20%和49%,250mL直立式输液袋为9%和51%,500mL直立式输液袋为11%和46%。比较而言,排空率增加的幅度远低于稳定性下降的幅度。综合考虑排空率和袋体稳定性,袋体的长径比不宜过大。
[Abstract]:The effect of aspect ratio of vertical polypropylene infusion bag (abbreviated as vertical infusion bag) on the infusion performance of bag body was studied in order to find the best aspect ratio. For the three bag types with marked capacity of 100250 and 500mL, five different aspect ratios (1.5 脳 1, 2: 1, 3: 1, 4: 1 and 5:1) were set up. The finite element method was used to simulate the drainage process, and the stress distribution and emptying rate of the bag body were studied. The variation of parameters such as dosage space and stability coefficient. Under the condition of certain marking capacity, the emptying rate increases gradually with the increase of aspect ratio, while the stability coefficient decreases with the increase of aspect ratio. The ratio of length to diameter is 1.5 脳 1 to 5: 1. The increase of emptying rate and the decrease of stability coefficient of the three kinds of vertical infusion bags are 20% and 49% for 100mL vertical infusion bags and 9% and 51% for 250 mL vertical infusion bags, respectively. The vertical infusion bags of 500mL were 11% and 46%. In comparison, the increase of emptying rate is much lower than the decrease of stability. Considering the emptying rate and the stability of the bag, the ratio of length to diameter of the bag should not be too large.
【作者单位】：四川大学建筑与环境学院生物力学工程实验室;西南科技大学力学教研室;
【基金】：四川省2011年第三批科技支撑计划项目资助(2011GZX0061)
【分类号】：R318.08

【参考文献】