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Decrease the potential risk of stoma leakage

Convex ostomy bags - a solution for ostomates?

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 challenges like these arise, they can lead to stoma leakage where the output seeps under the stoma bag's adhesive skin protector. This can compromise the adhesion of the device, affecting it's security and may irritate the peristomal skin surrounding the stoma, causing soreness and further complications for the ostomate.

If an ostomate suffers from stoma leakage, a convex stoma appliance may solve the issue. Healthcare professionals can determine whether convex products are suitable by assessing the type of stoma and abdominal contours.

Convex bags may help to avoid stoma leakage

A convex shaped adhesive skin protector can possibly make the appliance adhere better to the surrounding skin and allow the stoma to protrude into the stoma bag, to prevent stoma leakage, which is a frequent worry for many ostomates. Convex appliances are designed to:

apply sufficient pressure around the stoma to smooth out peristomal contours, especially in creases and skin folds, to ensure the skin protector forms a tight seal with the skin.
exert the right amount of pressure onto the peristomal skin, to allow the stoma to protrude further inside the bag. This improves the drainage of stoma effluents into the bag and is especially helpful with retracted or flush ostomies.
make accessories such as convex barrier rings unnecessary.

The choice of soft convexity can bring additional advantages:

flexible enough to adhere to and form a seal with the ostomate’s body profile while they move and change position.
even more comfortable to wear.

When should you try a convex stoma appliance?

Every ostomy is different and often, convexity can be a great help. To select the right device, the appliance must be adapted both to the anatomical conditions and dynamics of the ostomate’s abdomen as well as to the characteristics of their stoma. Therefore, convex stoma bag appliances differ, amongst other things, in angle, shape and depth of the convexity.

Ultimately, it is clinical experience which determines whether a convex appliance is suitable and what properties it should possess.

Convex appliances may be appropriate for:

Flush stomas: Ideally a stoma should protrude by 2.5 cm, 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 stomas: 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 stomas: Especially at night, when ostomates are supine, the telescoping stoma can slide towards or below skin level.
Un-sited stomas: If a stoma was formed during an emergency surgery while the patient was supine or had a distended abdomen, the stoma site may be not optimal.
Folds of peristomal 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.
Liquid or high output stoma: When the stoma discharge exceeds 750 ml per day, the likelihood of leakage rises. The same applies if the output is liquid in 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 skin protector.

Our offer of convex ostomy bags

Depending on individual needs, you may have the option to choose between standard or soft convex stoma bags with different depths of convexity. B. Braun has a whole range of convex options to suit individual's needs to help find a good solution for each person

Gently sloping convexity

Gently sloping convexity is a feature of all 4-6 mm deep Softima products. It was developed to provide better pressure distribution and apply sufficient pressure around the stoma to level out peristomal contours, help promote a good seal and enhance protrusion of the stoma lumen into the stoma bag.

Intensify convexity effect with a stoma belt

To create a higher sense of security, many users recommend the use of a stoma belt to intensify the effect of convexity.Three different attachment positions allow the belt to match the preferred position of the bag on the abdomen or to use 2 belts to spread the pressure away from the stoma.

Highlight product

Discover the new generation of soft convex stoma bags: Softima® Active Convex

Fit for Comfort, Fit for Function, Fit for Life

What ostomy nurses say about Softima® Active Convex:

“The Softima® Active Convex has advantageously replaced the rigid convexity and offers a wider range of action. When convexity is needed, soft convexity is a good choice for me.”

Anne van der Drift, ET Nurse – Bichat Hospital, France

“When I use Softima® Active Convex, I can rely on softness and my patients' chances of being protected from leakage increase.”

Virginie Lhommet, ET Nurse – Bichat Hospital, France

“In my experience, this bag is particularly suitable for stomas that are flat or slightly retracted. Especially if the stool is liquid, this can be used to avoid leakage and thus peristomal skin irritation. I recommend the product especially for active and sporty people who will choose this appliance for its softness, which is a key criteria for their daily activities and quality of life.”

Danièle Chaumier, ET Nurse, President of the French Association AFET

Product overview

Our offer of one-piece convex stoma range

Softima® Active Convex

The flexible soft convex skin protector allows flat or retracted stomas to protrude and to seal around stomas in folds. It can even fill in small hollows while simultaneously limiting the peristomal pressure. Moreover, the flexible ring can enhance the seal around the stoma.

Flexima Active o'Convex stoma bag one-piece system

Softima®

Moderate convexity of 4 mm can help make the stoma protrude so output goes straight into the stoma bag and avoids complications like leakage or skin irritation.