A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 1/36 (2006.01) B01D 61/18 (2006.01) B01D 63/08 (2006.01) B01D 69/12 (2006.01)
Patent
CA 2270413
A method and device for purifying conventionally treated blood plasma, to remove substantially all residual leukocytes while maintaining useful flow rates for medically useful amounts of plasma, utlize a disposable, heat- sterilizable filter (1) employing one or more depth-type prefilters (29) and at least one intermediate hydrophilic microporous membrane (25a) followed by at least one final hydrophilic microporous membrane (25b) having a smaller pore size than the intermediate membrane within a common housing.
La présente invention concerne un procédé et un dispositif de purification du plasma sanguin traités selon les techniques conventionnelles. Cette purification vise à éliminer sensiblement tous les leucocytes résiduels tout en conservant des débits utiles convenant au traitement de quantités de plasma médicalement utiles. A cet effet, on emploie un filtre jetable thermo-stérilisable (1) mettant en oeuvre, dans une enveloppe commune, un ou plusieurs préfiltres en épaisseur (29) et au moins une membrane hydrophile microporeuse intermédiaire (25a) suivie d'au moins une membrane hydrophile microporeuse finale (25b) dont le calibre des pores est inférieur au calibre des pores de la membrane intermédiaire.
Bischof Daniel F.
Borton Noel T.
Chapman John
Herman Robert E.
Sun Chong-Son
Baxter International Inc.
Pall Corporation
Sim & Mcburney
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