B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 39/16 (2006.01) A61M 1/34 (2006.01) B01D 39/08 (2006.01) B01D 39/18 (2006.01) D04H 1/42 (2006.01) D21H 27/08 (2006.01)
Patent
CA 2213092
A leukocyte-removing filter material which consists of a porous element having fine pores of an average pore diameter of not less than 1.0 µm but less than 100 µm and a fiber structure composed of a plurality of fibers having an average fiber diameter of not less than 0.01 µm but less than 1.0 µm kept on the above porous element, wherein the porosity of the above filter material is not less than 50% but less than 95%, the proportion of the above fiber structure to the above filter material is not less than 0.01% by weight but less than 30% by weight, the ratio between the average pore diameter of the above porous element and the average fiber diameter of the above fiber structure is not less than 2 but less than 2,000 and the above fiber structure forms a reticulate structure; a process for producing the same; and an apparatus for removing leukocyte using the above filter material.
L'invention porte sur un milieu filtrant d'extraction des leucocytes, son procédé de fabrication et sur un dispositif d'extraction des leucocytes utilisant ledit milieu. Le milieu filtrant comporte un élément poreux dont les pores ont un diamètre moyen compris entre 1,0 et moins de 100 mu m et une structure fibreuse reposant sur l'élément poreux et faite de fibres d'un diamètre moyen compris entre 0,01 et moins de 1,0 mu m; il présente une porosité de 50 % à moins de 95 % tandis que sa structure fibreuse en représente de 0,01 % à moins de 30 % en poids. Le rapport entre le diamètre moyen des pores et celui des fibres de la structure fibreuse est compris entre 2 et moins de 2000.
Fukuda Tatsuya
Tanaka Jun
Yoshida Kumi
Asahi Medical Co. Ltd.
Goudreau Gage Dubuc
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