Filter assembly for an ostomy pouch

摘要

A filter assembly for an ostomy pouch is disclosed, where the ostomy pouch is formed from a bodyside panel (2) and a non-bodyside panel (4) joined together. The assembly includes a porous filter (10) containing deodorising material attached to the non-bodyside panel, with the non-bodyside panel having an outlet (30) to the outside of the pouch for outletting gas that has been deodorised by the filter. A composite two sided microporous membrane (8) at least partially covers the filter for preventing ingress of fluids into the filter. The membrane has an expanded polytetrafluoroethylene (ePTFE) layer (14) on one side and a support layer of hydrophobic material (16) on the other side, and the support layer faces the filter. A connecting film (12) is welded (20) at an inner end (22) to the ePTFE layer and welded (26) at an outer end (24) to the non-bodyside panel.