Ostomy appliance

A method of manufacturing an ostomy appliance comprising:

• inner and outer walls of flexible sheet material, the inner wall comprising a stomal inlet and the outer wall comprising a gas vent;
• a separation wall between the inner and outer walls forming separate first and second chambers and comprising a liquid and gas permeable separation filter, the separation filter at least partially extending across a lower half of the ostomy appliance;
• and
• a protective structure located within the second chamber and comprising a protective panel attached to the outer wall and forming a protective chamber around the gas vent, the protective panel comprising an impervious flexible sheet;
• and
• a protective chamber gas inlet comprises at least one through-hole or cut-out located in the protective panel for allowing the stomal gas to migrate from the second chamber into the protective chamber and a protective chamber liquid outlet formed between the protective panel and at least one wall to which the protective panel is attached for allowing the stoma liquid to migrate out of the protective chamber,
• where the protective chamber liquid outlet is located along a lower edge of the protective chamber, below the gas vent, and is formed within an attachment region between the protective panel and the outer sheet, such that any stoma liquid in the protective chamber is directed to migrate out of the protective chamber via the liquid outlet, and
• wherein, in use:
• the first chamber is arranged to receive stomal output directed into the ostomy appliance via the stomal inlet;
• the separation filter is arranged to communicate, from the stomal output in the first chamber, stoma liquid and stomal gas to the second chamber;
• and
• the gas vent is arranged to allow the stomal gas to migrate from the second chamber through the protective chamber to outside of the ostomy appliance;
• the method comprising laying the inner and outer walls over one another with the separation wall and protective panel therebetween and attaching the inner, outer and separation walls to one another.