Patent ID: 7981099
Filing Date: 2011-07-19
Classification: A61F

Abstract:
1. A deodorizing flatus gas filter assembly for body waste collection pouches, comprising a filter pad having first and second filter layers of deodorizing filter media; said layers being coextensive and superposed, with said filter layers having planar outer faces, opposed planar inner faces, and exposed peripheral edge surfaces; and an imperforate gas and odor barrier layer sandwiched between said first and second filter layers for blocking the direct flow of gases between said opposed inner faces; said assembly also including an envelope formed of liquid and gas impermeable material defining a chamber enclosing said pad; said envelope having walls with first and second openings communicating with central portions of said first and second filter layers, respectively; said pad having an outer surface sealed to one of the walls of the envelope; said envelope defining a peripheral space about said pad to permit the flow of flatus gases from a peripheral edge surface of one of said filter layers to the peripheral edge surface of the other said filter layers; whereby, flatus gases may enter said envelope through one of said envelope openings, enter one of said filter layers through said central portion of said outer face thereof, flow radially outwardly through said one filter layer to enter said peripheral space and then into the peripheral edge surface of the other of said filter layers to flow radially inwardly through said other of said filter layers and exit the assembly through the other of said envelope openings.