Blood collection systems including an integral, flexible filter

Details Blood collection systems including an integral, flexible filter Blood collection systems including an integral, flexible filter

B - Operations, Transporting

01

D

B01D 29/00 (2006.01) A61M 1/02 (2006.01) B01D 29/01 (2006.01) A61M 1/36 (2006.01)

Patent

CA 2368645

Blood collection systems include an integral flexible filter to remove leukocytes from blood components. Filter includes first and second flexible sheets comprising a meltable material, a depth filter medium comprising a meltable material, a peripheral seal joining the sheets directly to the filter medium to encapsulate the filter medium between the first and second sheets where the seal includes a comingled melted matrix comprising material of the sheets and material of the filter medium. Filter also includes inlet and outlet ports and is "non-directional" so each port can be oriented to serve either as an inlet or an outlet port. The filter medium comprises prefilter and postfilter layers each made of fibrous material having a pore size and fiber diameter not suited for leukocyte removal.

L'invention porte sur un système de recueil de sang à filtre souple intégré permettant de séparer les leucocytes des composants sanguins. Ledit filtre comporte deux feuilles souples (32, 34) d'un matériau fusible, un milieu de filtrage (28) en profondeur d'un matériau fusible, et un joint périphérique (36) reliant directement les feuilles (32, 34) au milieu filtrant (28) de manière à l'enfermer entre les deux feuilles (32, 34), ledit joint comportant une matrice fusible faite d'un mélange intime du matériau des feuilles (32, 34) et du matériau du milieu filtrant (28).

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