Patent ID: 8162870
Filing Date: 2012-04-24
Classification: A61M,B01D

Abstract:
1. A blood filter device comprising: a housing that includes a head portion provided with a blood inlet and forming an upper structure of the housing, a filtration portion positioned below the head portion and forming a middle structure of the housing, and a bottom portion disposed below the filtration portion and provided with a blood outlet; and a filter mounted in a cavity of the filtration portion and partitioning a cavity of the housing into a head portion side and a bottom portion side, the filter being formed of a filter sheet folded to have a plurality of pleats, and disposed so that ridgelines of the plurality of pleats traverse respectively the cavity of the filtration portion in parallel, wherein the bottom portion has a conical portion on the inner bottom face protruding downward to form a conical face, and an annular regulating plate is provided above an outer peripheral part of an effective region of the filter, so as to cover over the outer peripheral part of the effective region, with a clearance being provided between an upper face of the filter and a lower face of the regulating plate.