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。
The study aims to investigate the effect of the ratio of long axis to short axis （RLS） of upright polypropylene infusion bag on discharging process and to search the best RLS. Aiming at five different RLS （ 1.5 ： 1, 2 ： 1, 3 ： 1, 4：1 and 5; 1, respectively） with the volume of 100 mL, 250 mL and 500 mL, respectively, based on finite element method, analyzing the variation of stress distribution, emptying rate, drugging space and steadiness coefficient, etc, For the bags of the same volume, emptying rate increased with increasing of RI.S, but the steadiness coefficient de- creased with increasing of RLS. The specific increasing amplitude of emptying rate and decreasing range of steadiness coefficient were as follows： 20% and 49% for 100mL infusion bag, 9% and 51% for 250 mL infusion bag, and 11% and 46% for 500 mL infusion bag, respectibvely, when RLS increased from 1.5：1 to 5： 1. Comparatively speaking, the increasing amplitude of the emptying rate is remarkably less than the decreasing range of the steadiness coeffi- cient. By comprehensive consideration of both emptying rate and steadiness coefficient, lower RLS is recommended for upright polypropylene infusion bag.
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2014年第3期606-611,共6页
Journal of Biomedical Engineering
基金
四川省2011年第三批科技支撑计划项目资助(2011GZX0061)
关键词
静脉输液
直立式聚丙烯输液袋
长径比
排空率
稳定性系数
intravenous infusion
upright polypropylene infusion bag
ratio of long axis to short axis
emptying rate
steadiness coefficient
