Medical devices; medical apparatus; ostomy pouches and structural parts therefor; ostomy medical appliances and devices; ostomy medical appliances and devices, namely, pouches, flanges, collars, wafers, adhesive rings, filters, skin barriers, hydrocolloid skin barriers being medical devices, skin barriers with flanges, ostomy pouch valves and adapters, ostomy pouch drainage outlets, and structural parts therefor; ostomy pouching systems comprised of pouches, flanges, collars, wafers, adhesive rings, filters, skin barriers, hydrocolloid skin barriers being medical devices, skin barriers with flanges, ostomy pouch valves and adapters, ostomy pouch drainage outlets, and structural parts therefor; faecal incontinence appliances and devices; faecal incontinence appliances and devices, namely, pouches, flanges, skin barriers, hydrocolloid skin barriers being medical devices, skin barriers with flanges, drainage containers, drainage control adapters, and structural parts therefor; faecal incontinence management systems comprised of pouches, flanges, skin barriers, hydrocolloid skin barriers being medical devices, skin barriers with flanges, drainage containers, drainage control adapters, and structural parts therefor.;