Ostomy bag including a multiple layer filter

A bag or pouch for receiving discharge from the human body comprising:

• two superposed sheets of synthetic plastics material joined around their edges;
• a filter attached to an upper part of an interior surface of one of the sheets, there being a hole or slit in the one sheet to allow gases exiting the filter to pass to the exterior of the bag pouch, said filter including the following components laminated together in the following order:
• (a) a layer of hot-melt adhesive whereby the filter may be affixed to the one sheet of the bag;
• (b) a layer of microfine non-woven material which is partially restrictive to gas flow therethrough;
• (c) a matrix layer of hot-melt adhesive;
• (d) a filter member of carbon-impregnated polyurethane open cell foam;
• (e) a matrix layer of hot melt adhesive;
• and
• (f) a layer of non-woven fabric which is partially restrictive to gas flow;
• and
• said bag or pouch further comprising:
• an intervening wall included to separate the filter region from the remainder of the interior of the bag or pouch, said intervening wall being characterized by having a series of scatter holes therein, there being from 100 to 300 holes per square inch (155000 to 465000 holes per square meter) and each hole having a maximum dimension of from 130 to 340 microns.