Patent ID: 8506542

Claim:
A two-piece ostomy device, comprising a base plate for adhering to skin surrounding a stoma and a releasable collecting bag for collecting output from said stoma, wherein the base plate is releasably connectable to the collecting bag via a first annular flange arranged on the base plate and a second annular flange arranged on the collecting bag and where an adhesive is disposed on at least one of the flanges, the ostomy device further comprising: a first through-going hole extending through the first annular flange along a first axis, and a second through-going hole extending through the second annular flange along a second axis, where the first annular flange is attached to the base plate via a first annular attachment zone from which a first free outer flange section extends in a radial direction away from the first axis, and the second annular flange is attached to the collecting bag via a second annular attachment zone from which a second free outer flange section extends in a radial direction away from the second axis, and where the ostomy device further comprises: a guiding aid for arranging the first annular flange and the second annular flange in a guiding configuration where the movement of the first and the second flange is limited relative to each other in one plane being defined by the first and second axis, and in rotation around at least one of the first or the second axis, wherein the guiding aid comprises: a sheet with an annular cut-out having a radius equal to or larger than the radial distance from the second axis to the outer edge of the second annular attachment zone, said sheet having a guiding tab extending in a radial direction away from a center of the annular cut-out, and a recess arranged on the first annular flange having dimensions capable of receiving the guiding tab.