Blood filter and method of manufacturing filter

Details Blood filter and method of manufacturing filter Blood filter and method of manufacturing filter

A - Human Necessities

61

M

A61M 1/34 (2006.01) B01D 29/01 (2006.01) B01D 39/08 (2006.01) B01D 39/16 (2006.01) B29C 65/00 (2006.01) A61M 1/02 (2006.01) A61M 1/36 (2006.01)

Patent

CA 2154762

A blood filtration device (16) encapsulates a filter pad assembly (20) within a flexible housing (18). The filter pad assembly (20) includes first and second filter media layers (44, 46). A first heat and pressure sealed region (28) integrally bonds the peripheries of the first and second media layers (44, 46) together. The flexible housing (18) comprises a peripheral rim (34) aligned with the first heat and pressure sealed region (28) of the first media layer (44). A second heat and pressure sealed region (32), formed after the first heat and pressure sealed region (28), joins the rim (34) of the flexible housing (18) to the first heat and pressure sealed region (28), thereby forming a composite seal that encapsulates the filter pad assembly (20) within the housing (18).

Un dispositif de filtration (16) du sang encapsule un ensemble tampon filtrant (20) dans un logement souple (18). L'ensemble tampon filtrant (20) comprend des première et seconde couches (44, 46) de milieu filtrant. Une première région (28) thermoscellée, tenant la pression, fixe de manière solidaire les périphéries des première et seconde couches (44, 46) de milieux l'une à l'autre. Le logement souple (18) comprend un bord périphérique (34) aligné avec la première région (28) thermoscellée, tenant la pression, de la première couche (44) de milieu. Une seconde région (32) thermoscellée, tenant la pression, formée après la première région (28) thermoscellée, tenant la pression, unit le bord (34) du logement souple (18) à la première région (28) thermoscellée, tenant la pression, formant ainsi un joint composite encapsulant l'ensemble tampon filtrant (20) à l'intérieur du logement (18).

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