초록 ▼

An ostomy appliance comprising a front wall and a rear wall of flexible material, the rear wall having an opening into the bag by which waste material can enter the bag and one of the walls has one or more vents through which gas may escape from the bag and having a filter covering said vent, said f

An ostomy appliance comprising a front wall and a rear wall of flexible material, the rear wall having an opening into the bag by which waste material can enter the bag and one of the walls has one or more vents through which gas may escape from the bag and having a filter covering said vent, said filter comprising an elongated, substantially flat filter body of a porous filter material interposed between gas and liquid impervious walls which are sealed to the body along its longitudinal side edges; gas inlet and outlet openings being provided in communication with the filter material adjacent to its respective longitudinal end regions, wherein both of the gas and liquid impervious walls are sealed to the upper end lower surfaces of the filter body, the arrangement being so that in use gas flows longitudinally through the filter from the inlet opening to the outlet opening, such gas flow being by a hydrophobic sheet,

대표청구항 ▼

[ What is claimed is:] [1.] An ostomy appliance comprising a bag having a front wall and a rear wall of flexible material, the rear wall having an opening into the bag by which waste material can enter the bag and one of the walls having one or more vents (3) through which gas may escape from the ba

[ What is claimed is:] [1.] An ostomy appliance comprising a bag having a front wall and a rear wall of flexible material, the rear wall having an opening into the bag by which waste material can enter the bag and one of the walls having one or more vents (3) through which gas may escape from the bag and having a filter covering said vent, said filter comprising an elongated, substantially flat filter body (10) of a porous filter material interposed between gas and liquid impervious walls which are sealed to the filter body along its longitudinal side edges; gas inlet and outlet openings being provided in communication with the filter material adjacent to respective longitudinal end regions of the filter material, wherein both of the gas and liquid impervious walls are sealed to upper and lower surfaces of the filter body, the arrangement being such that in use gas flows longitudinally through the filter from the inlet opening to the outlet opening, such gas flow being confined to said filter element, wherein the inlet opening is covered by a water impermeable sheet, wherein the filter material is interposed between the gas and liquid impervious walls (11,12) forming a filter device (4) having gas inlet (15) and outlet (16) openings in communication with the filter wherein the inlet opening (15) is covered with a microporous hydrophobic and oleophobic membrane (17), the outlet opening (16) of the filter device (4) and the vent (3) are aligned, said membrane (17) is covered with a wall (18) defining a space for placing a foam material (5) between the front wall and the rear wall and covering the inlet opening of the vent and the wall (18) has one or more inlet openings (7,20) leading to the space comprising the foam material.