Membrane for separating body fluid component and separating method therefor

Abstract

Abstract PURPOSE: To separate plasma components from blood by filtration without damaging or leaking blood cells by using a porous hollow yarns made of polyethylene and having a specified porosity rate, a specified filtration velocity for pure water, a specified permeability to the human serum albumin and a special film construction. CONSTITUTION: The porous hollow yarns made of polyethylene having a pore area ratio of 40W90vol%, a filtration velocity of pure water of 0.2W20l/m 2 .hr. mmHg and a permeability to the humal serum albumin of 80% or higher is used as the membrane for separating body fluid components. The construction of the porous hollow yarn includes a multiplicity of strip-shaped micropores which have an average width of 300W5,000Å and an average ratio of length to width of 8W 50 and are aligned in the longitudinal direction of the fiber, the micropores extending continuously from the inside wall surface of the hollow yarn to the outside wall periphery, and the film thickness is 5W80μm. The hollow yarn is preferably made of a high-density polyethylene which has a density of at least about 0.960g/cm 3 or higher and which essentially has little branching. COPYRIGHT: (C)1982,JPO&Japio

Inventors

• 👤 Jun Kamo
• 👤 Hisayoshi Yamamori
• 👤 Mizuo Shindo

Bibliographic Details