B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 29/00 (2006.01) A61M 1/36 (2006.01) B01D 61/00 (2006.01) B01D 61/18 (2006.01) B01D 63/08 (2006.01) B01D 65/00 (2006.01) B01D 69/12 (2006.01)
Patent
CA 2416828
A filter for removing leukocytes from blood comprises a filter media (20) enclosed in a housing (30). The filter media (20) includes a main filter region (MF) comprising a porous membrane structure extending between first and second skin surfaces. The porous membrane structure is formed by intersecting cells having a range of diameters. The cells adjacent to the first skin surface have diameters generally smaller than the diameters of the cells adjacent to the second skin surface. The first skin surface includes an open area defined by pores which are formed by the intersection of cells with the first skin surface. The majority of the open area is defined by pores having a diameter of between about 12 microns and 28 microns.
L'invention concerne un filtre permettant de retirer les leucocytes du sang et comportant un support de filtre (20) inclus dans un logement (30). Le support de filtre (20) comprend une zone de filtre principale (MF) composée d'une structure de membrane poreuse orientée entre une première et une seconde surfaces de peau. La structure de membrane poreuse est formée par l'intersection de cellules présentant une gamme de diamètres différents. Les cellules adjacentes à la première surface de peau possèdent des diamètres généralement inférieurs aux diamètres des cellules adjacentes à la seconde surface de peau. La première surface de peau présente une zone ouverte définie par des pores formées par l'intersection de cellules avec la première surface de peau. La majeure partie de la zone ouverte est définie par des pores dont le diamètre varie entre 12 microns et 28 microns, environ.
Breillatt Julian P. Jr.
Sternberg Shmuel
Baxter International Inc.
Sim & Mcburney
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