How to Use a Convex Drainable Ostomy Pouch for Better Fit

Quick answer

To get a better fit with a convex drainable ostomy pouch, trim the skin barrier to match your stoma size, warm the flange for flexibility, and press firmly around the convex area to create a gentle seal against your abdomen.

Step-by-step guide to applying a convex drainable ostomy pouch

1. Step 1: Prepare your skin and measure your stoma: Clean the skin around your stoma with warm water and dry thoroughly. Measure your stoma diameter using a measuring guide—do not guess. For the Premier™ pouch, you will trim the barrier to fit a stoma up to 1-1/2 inches. A common mistake is cutting the opening too large, which exposes skin to output and causes leaks. Always cut the opening no more than 1/8 inch larger than your stoma.
2. Step 2: Trace and cut the skin barrier to size: Use the sizing guide on the pouch's paper backing to trace the correct opening. Cut carefully along the line with curved scissors. If you cut too small, the barrier may rub against the stoma; too large, and skin will be exposed. Check the fit by holding the cut opening against your stoma before removing the backing. Test the cut opening against your stoma before peeling off the adhesive.
3. Step 3: Warm the convex flange for flexibility: Hold the pouch against your body (still with the backing on) for 30–60 seconds, or place it under your arm. Body heat softens the convex flange, making it easier to mold against your abdomen. Skipping this step can result in a rigid barrier that does not conform to skin folds. Warming the flange improves adhesion and reduces the chance of gaps.
4. Step 4: Apply the pouch with firm, even pressure: Remove the backing paper and center the opening over your stoma. Press the convex area firmly against your skin for at least 30 seconds, using your fingers to smooth outward from the stoma. A common mistake is pressing only the edges, leaving the convex center loose. This can cause the pouch to pull away as output collects. Focus pressure on the convex ring, not just the outer adhesive.
5. Step 5: Secure and check for leaks: If your pouch has a belt tab or tape border, press those down for extra security. Gently tug the pouch—if it lifts, re-press the area. For drainable pouches, ensure the tail closure is folded and fastened correctly. A small air bubble under the barrier often indicates incomplete adhesion; smooth it out immediately. Do a quick tug test after application; re-press any lifted edges right away.

Product highlight

• Premier™ One-Piece Drainable Ostomy Pouch – Convex Trim to Fit Up to 1-1/2 Inch Stoma Drainable: The Premier™ One-Piece Drainable Ostomy Pouch features a CeraPlus™ skin barrier with Remois technology infused with ceramide, which helps decrease trans epidermal water loss from damaged or eroded skin. This means the barrier not only seals securely but also actively supports skin health during wear, reducing the risk of irritation between pouch changes.