公开(公告)号：US3978857A

公开(公告)日：1976-09-07

申请号：US546509

申请日：1975-02-03

Applicant: Charles J. McPhee

Inventor： Charles J. McPhee

IPC: A61M5/165 ,  A61M5/14

CPC classification number: A61M5/165 ,  A61M2005/1657

Abstract: A device for filtering a parenteral solution immediately before it is infused into a patient's vein. The device has a hollow housing containing a "depth" filter membrane of nonfibrous hydrophobic material having randomly connected stacked passages of from 10 to 40 micron size through the filter. After the filter membrane has had one surface in contact with the parenteral solution for a period of 15 to 60 seconds while passing only a minute amount of liquid it is then manually tapped to send a shock wave through the filter. This shock wave unexpectedly causes the hydrophobic filter to freely pass liquid and filter out more than 90 percent of all particulate matter of 5 micron size and larger from the parenteral solution. The large pore hydrophobic filter membrane can perform these filtering efficiencies with a very small, thin disc-shaped membrane of approximately 1/4 inch effective diameter.

Abstract translation: 一种在肠胃外溶液注入患者静脉之前过滤肠胃外溶液的装置。 该装置具有中空壳体，其包含非纤维疏水材料的“深度”过滤膜，其通过过滤器具有10至40微米尺寸的随机连接的堆叠通道。 在过滤膜已经使一个表面与胃肠外溶液接触15至60秒之间，同时仅通过微量的液体，然后手动敲击以通过过滤器发送冲击波。 这种冲击波意外地导致疏水过滤器自由通过液体，并从肠胃外溶液中过滤出超过90％的所有5微米尺寸和更大颗粒物质。 大孔疏水过滤膜可以用大约1/4英寸有效直径的非常小的薄的盘状膜来执行这些过滤效率。