Low volume, large area filters for iv or blood filtration

Details Low volume, large area filters for iv or blood filtration Low volume, large area filters for iv or blood filtration

B - Operations, Transporting

01

D

182/72, 18/76

B01D 27/06 (2006.01) A61M 5/165 (2006.01) B01D 29/11 (2006.01)

Patent

CA 1211720

ABSTRACT OF THE DISCLOSURE There is disclosed herein a flow-through medical filter element which includes surface or depth filter media and a frame-like structure for supporting and positioning the media. The frame-like structure is a molded member which includes a ring-like inlet, a fluid-impervious terminal end spaced from the inlet and a plurality of rib-like members which extends be- tween and interconnect the inlet end and terminal end. The inlet end includes internally-extending pleat- supporting projections and the terminal end has comple- mentary externally-extending pleat-supporting shoulders. The frame-like structure is symmetrical about an axial plane which includes the mold parting line. The ex- ternal shoulders are formed at angles which permits separation of a mold along the parting line and release of the part. The filter media also includes longitu- dinal pleats and is secured at its end to the pleat- supporting projections associated with the inlet end and to the external pleat-supporting shoulders at the terminal end. Thus blood enters the filter element flows through the media and thereafter exits the filter ele- ment. This construction permits for a molding operation and provides a high surface area filter for use in existing units.

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