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本文选择 9家输液器用药液过滤器及 6家膜材 ,采用动态测定滤速的方法进行了滤速衰减实验。结果证明 ,输液器药液过滤器及其滤膜在滴注一定量的液体后其滤速均有不同程度的衰减。滤速衰减速度与滤器材料及其孔径大小密切相关。核孔膜衰减速度明显大于聚丙烯无纺布膜。而且发现后者部分样品在滴注 150 0— 2 0 0 0 ml后 ,滤速反而增加。提示聚丙烯无纺布膜作为部分样品输液滤器的滤材 ,可因在滴注药液过程中由于膜的溶涨、孔隙率增加 ,而使微粒截留率降低。建议生产厂家改进生产工艺或选用性质稳定的惰性材料作输液滤器的滤材 ,确保滤器质量
In this paper, nine liquid infusion filters and six membrane materials were selected. The filtration rate decay experiment was carried out by the method of dynamic measurement of filtration rate. The results show that the infusion fluid filter and its filter after the infusion of a certain amount of liquid filtration rate has varying degrees of attenuation. Filter speed decay rate and filter material and its pore size is closely related. Nuclear pore decay rate was significantly greater than polypropylene non-woven membrane. And found that the latter part of the sample drip 150 0-20 000 ml, the filtration rate increased. Tip polypropylene nonwoven membrane as part of the sample infusion filter media, due to in the process of instillation of the solution due to swelling of the membrane, the porosity increases, leaving the particle rejection rate decreased. Advice manufacturers to improve the production process or the use of inert materials for the stability of the infusion filter media to ensure filter quality