Patent ID: 6506184
Filing Date: 2003-01-14
Classification: A61F

Abstract:
A bag for receiving discharge from the human body, said bag having a distal wall and a proximal wall, each wall constructed of a gas and liquid impermeable, heat sealable thermoplastic material and having the edges thereof sealed together and defining the interior of the bag between said walls; said proximal wall having a stomal aperture and one of the walls having a gas venting aperture spaced from the stomal aperture; a filter for de-odorizing gas vented through said gas venting aperture and arranged such that all the gas exiting the bag through said venting aperture flows through said filter; an intermediate barrier membrane disposed intermediate said filter and said interior of the bag such that all the gas exiting the bag through said filter flows through said barrier membrane and for preventing liquids and solids in the interior of said bag from contacting said filter while allowing gas to flow through said barrier membrane from said interior to said filter; said barrier membrane comprising an unlaminated microporous film of ultra high molecular weight polyethylene, and being sealingly secured to said one wall;said microporous film having a porosity allowing retention by said barrier membrane of substantially all human fecal bacteria in said gas flow.