Gas-venting filter for collection appliance

Details Gas-venting filter for collection appliance Gas-venting filter for collection appliance

A - Human Necessities

61

F

128/109, 183/34

A61F 5/44 (2006.01) A61F 5/441 (2006.01) B01D 53/04 (2006.01)

Patent

CA 1146874

GAS-VENTING FILTER FOR COLLECTION APPLIANCE Abstract An odor-adsorbing gas-venting filter assembly for a collection appliance, such as an ostomy pouch, which includes a fibrous heat-sealable filter pad containing activated carbon and having a gas-pervious liquid barrier heat sealed to one face thereof. The pad and the liquid barrier integrated with it are confined between two panels of heat-sealable material joined together along their borders. One of the panels is formed of impervious thermoplastic material, has at least one central opening, and is heat sealed to the integrated barrier and pad along a zone extending about such opening. The sealed borders of the panels are in turn heat sealed to the wall of the collection appliance about its vent aperture so that gas escaping from the appliance cannot by-pass the odor- adsorbing filter.

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