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Decrease the potential risk of stoma leakage 

Convex ostomy bags - a solution for your patients?

Stoma complications can occur within one month after surgery but also at a later stage. Some of the contributing factors may be the stoma placement, its characteristics, fistula formation or a high liquid output. When any of these obstacles arise, effluents may irritate the peristomal skin and even seep under the stoma wafer. As a result, the adhesion of the device can be compromised, and the surrounding area may also be irritated.

If your patient suffers from stoma leakage, a convex stoma appliance may solve the issue. You can determine whether it is suitable by assessing the type of stoma and the patient’s abdominal contours.

When should you suggest a convex stoma system?

Convex appliances may be appropriate for

  • Flush stoma: A stoma should be 2.5 cm in length, so the seal around the base of the stoma can work well. However, if a stoma sits at the level of the abdominal skin, it is considered flush.
  • Retracted stoma: A retracted stoma sits below the level of the skin. This may have been caused by a technical difficulty during surgery or by postoperative weight gain.
  • Telescoping stoma: Especially at night, when patients are supine, the telescoping stoma can slide towards or below skin level.
  • Poorly placed stoma: If a stoma was formed during an emergency surgery while the patient was supine or had a distended abdomen, the result may be not optimal.
  • Folds of peristomial skin: The skin may form canal-like folds that cause leakage.
  • Soft abdomen: An abdomen with weak muscle tone provides little support for the stoma, resulting in contours in the peristomal plane.
  • High-output stoma: When the stoma discharge exceeds 750 milliliters per day, the likelihood of leakage rises. The same applies if the output is of a rather liquid nature.


Liquid discharge has the potential to seep into smaller gaps in the skin more easily than formed stool and crosses the skin barrier faster, even with well-protruded stomas. In such cases, convex-shaped products can increase the wear time of the wafer.

Gently sloping convexity
Convex system application

Highlight product

Discover the new generation of soft convex stoma bags: Flexima® Active O' convex

O' what a difference

Features and benefits of Flexima® Active O' convex

Product overview

Our offer of one-piece convex stoma bags

Flexima Active o'Convex stoma bag one-piece system
Flexima stoma bag one-piece system

Our offer of two-piece convex stoma systems

Flexima 3S stoma bag coupling system
Flexima Key stoma bag adhesive coupling system