B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 67/00 (2006.01) A61L 33/00 (2006.01) B01D 63/02 (2006.01) B01D 69/02 (2006.01) B01D 69/12 (2006.01) B01D 71/42 (2006.01)
Patent
CA 2368999
The invention concerns a non-thrombogenic semipermeable membrane comprising a support semipermeable membrane and an anticoagulant suitable for treating blood and plasma by extracorpreal circulation. The invention is characterised in that: the support membrane is made essentially of a polyacrylinitrile, bearing anionic groups or groups capable of being anionic; the surface of the support semipermeable membrane designed to be in contact with blood or plasma is coated successively with a cationic polymer and an anticoagulant. The invention also concerns an exchanger for treating blood or plasma by extracorporeal circulation comprising two sections separated by a non-thrombogenic semipermeable membrane and a method for making the exchanger.
La présente invention a pour objet une membrane semi-perméable non thrombogène comprenant une membrane semi-perméable support et un agent anticoagulant approprié au traitement du sang et du plasma par circulation extracorporelle. Elle est caractérisée en ce que: la membrane semi-perméable support est constituée essentiellement par un polyacrylonitrile, porteur de groupements anioniques ou anionisables; la surface de la membrane semi- perméable support destinée à être mise en contact avec le sang ou le plasma est revêtue successivement d'un polymère cationique et d'un agent anticoagulant. L'invention concerne également un échangeur pour le traitement du sang ou du plasma par circulation extracorporelle comprenant deux compartiments séparés par une membrane semi-perméable non thrombogène et un procédé de fabrication de l'échangeur.
Crost Thierry
Renaux Jean-Louis
Thomas Michel
Gambro Industries Sas
Hospal Industrie
Robic
LandOfFree
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