Filter for water filtration, in particular for removal of pyrogens from and/or sterilisation of infusion solutions

摘要

In a filter for water filtration, in particular for the removal of pyrogens from and/or sterilisation of infusion solutions, a selectively permeable, flat membrane (14) having a cutoff of /= 5000 daltons and a pore size /= 0.2 mu m is supported on both sides by a planar, non-fibre-shedding supporting non-woven web or card through which the solution can flow in three dimensions and, together with this double-sided support (15, 16), is pleated to form a folded package (17). A parallelepipedal housing (1, 2) having a least one inlet (4) and a vent on the dirty side and an outlet (6) on the clean side surrounds the folded package (17) on all sides, the housing (1, 2) being constructed to an asymmetric cross-section in such a manner that on the dirty side a fluid distribution chamber (18) is formed along the folded edges and on the clean side the folded edges lie against the facing housing wall (Figure 1). IMAGE