best ostomy bag for flat stoma

2025-12-15
Author: Zodelo Ostomy

For patients with flat stoma, they may often encounter problems such as leakage, skin irritation, redness, swelling and itching, and the need to frequently replace ostomy bags. Therefore, it is necessary to choose a best ostomy bag for flat stoma. In order to better care for the stoma and start a healthy and comfortable life.

Zodelo is well aware of the importance of the best ostomy bag for flat stoma and stoma care products for patients with flat stoma. Therefore, based on user experience, we are committed to developing and manufacturing the highest quality and safest manufacturing bags and their accessories, so that all users can enjoy a more comfortable and reassuring life. Meanwhile, Zodelo also provides you with the most comprehensive and detailed information on ostomy care. This article will introduce the best ostomy bag for flat stoma to you in detail.

What to know about best ostomy bag for flat stoma

1.How does an ostomy bag work?

When you want to choose best ostomy bag for flat stoma. You need to specifically understand the composition and working principle of best ostomy bag for flat stoma.

Bag body: colostomybag body is usually made of transparent or opaque soft materials and is used to collect the excrement discharged from the opening. It features strong leak-proof performance, strong odor resistance, and skin-friendly softness.
Skin barrier: Basically made of hydrocolloid or silicone material, it is adhered around the stoma skin to fix the bag body, which can prevent excrement from contaminating the skin and prevent leakage.

Discharge outlet: The discharge outlet is usually located at the bottom of the colostomy bag. The open discharge outlet can discharge loose or liquid waste, which can be emptied, cleaned and reused.
Ostomy bag accessories: Activated carbon filter, which can absorb odors and prevent them from leaking. Leak-proof rings and leak-proof paste are used to achieve stronger sealing and adhesion, preventing leakage and odor.

2. What is a flat stoma?

Flat stoma refers to a stoma that is almost flush with the skin or slightly lower than the skin surface, with no obvious protruding height. The stoma height is level with the skin or slightly retracted. Excrement is more likely to spread to the skin around the stoma rather than naturally fall into the stoma pouch. Therefore, the skin is also more prone to redness, swelling and erosion due to long-term exposure to excrement contamination. At the same time, problems such as leakage and unpleasant odors occurred.

3. Types of ostomy bag

When choosing the best ostomy bag for flat stoma for yourself correctly. You should also need to know the types of ostomy bags.

One-piece ostomybag: The base and the bag body cannot be separated. When replacing, the entire bag can be replaced, making it thinner, lighter and more comfortable. The operation is simple and quick, suitable for beginners or those who pursue simple operation.
Two-piece ostomybag: The base and the ostomy bag body are separated. The base can be adhered to the skin for multiple uses, and only the ostomy bag body needs to be replaced. There is no need to frequently change the chassis, which may irritate the skin. It is suitable for patients with frequent excretion or sensitive skin.
Drainable ostomy bag: The bottom of the ostomy bag has an open excretion port for discharging the excrement inside the ostomy It can be emptied and reused multiple times, which is more economical and practical. It is suitable for patients with loose stools or frequent or large bowel movements, such as those with ileostomy
Closed-end ostomy bag: No discharge opening, for single use only, and discarded as a whole after use. It is more hygienic, easier to replace, and suitable for people with solid feces or regular excretion patterns, such as patients with ileostomy.
Urostomy Pouch: Specifically designed for urine excretion, it features an anti-reflux valve and a night drainage interface, making it suitable for patients with urinary tract stoma.

best ostomy bag for flat stoma

1. Deep convex ostomy bags for flat stoma

Flat stoma refers to a stoma that is almost flush with the skin or slightly lower than the skin surface, with no obvious protruding height. The stoma height is level with the skin or slightly retracted. Excrement is more likely to spread to the skin around the stoma rather than naturally fall into the stoma pouch. Therefore, the skin is also more prone to redness, swelling and erosion due to long-term irritation from excrement. At the same time, ordinary flat chassis are prone to insufficient sealing, resulting in problems such as leakage and unpleasant odors.

2. Why is Flat Stoma more suitable for convex Stomy bags?

For flat or retracted stoma patient，best ostomy bag for flat stoma is deep convex ostomy bags.

Problems	Deep convex ostomy bags feature
Prone to leakage	Change the direction of excrement to reduce lateral flow
Skin irritation	Reduce the contact of excrement with the skin
Not obedient	Provide structural support
Uneven abdomen	Enhance the dynamic sealing capability

3. Precautions for using the best ostomy bag for flat stoma

1. Don’t use it blindly

Deep convex ostomy bags are not necessarily the deeper the better. Excessive stress may lead to: stoma ischemia

Problems such as pain and stoma edema.

2. Pay attention to protecting your skin

Flat stoma users often need to use products such as Barrier Ring/Paste and Skin Barrier in conjunction. Only in this way can the skin be better protected and leakage prevented.

3. Regularly re-evaluate

The shape of the stoma may change with: changes in body weight, postoperative recovery, and changes in abdominal tension. Therefore, it is necessary to regularly assess the stoma condition and select the most suitable ostomy bag and skin barrier.

Considerations When Choosing best ostomy bag for flat stoma

1. Chassis structure

The first question that must be asked when choosing the best ostomy bag for flat stoma is: Does this system provide sufficient convex support?

Convex type	Compatibility with Flat Stoma
Flat	Not recommended
Light Convex	Partially suitable
Deep Convex	Optimal choice
Firm Convex	Tolerance needs to be evaluated

2. Performance matching of skin barrier

When choosing the best ostomy bag for flat stoma, the skin barrier must focus on sealing stability, structural support, skin protection and comfort. It can be evaluated based on the following dimensions.

	Requirements of Flat Stoma
Absorbency	Medium-high (to prevent side seepage of excrement)
Adhesive force	High (in response to insufficient stoma height)
Resilience	There is (maintaining the convex surface shape)
Durability	High (Reduce replacement frequency)

3.One-piece vs two-piece system

When choosing the best ostomy bag for flat stoma, the following dimensions can be referred to.

Usage scenarios	Better choice
The stoma is stable and has a small amount of movement	One-piece
Flat stoma + has many activities	The two-piece type is more stable
The bag body needs to be replaced frequently	Two-piece
Long-term stoma management	Two-piece

4.Is the Ostomy Belt supported?

When choosing the best ostomy bag for flat stoma, a stoma system that can be paired with an ostomy belt should be given priority.

Because the ostomy belt can provide additional inward pressure. Stable Convex structure. It significantly reduces the risk of leakage when bending over, exercising, sitting for long periods or sleeping at night.

5. Abdominal contour and dynamic changes

When choosing the best ostomy bag for flat stoma, the following questions must be evaluated:

Do wrinkles form on the abdomen when sitting down?

Is there a significant difference between standing and sitting?

Are there any scars, depressions or soft tissue accumulations?

For Flat stoma, flexible convex surfaces + structural supports are more important than hardness.
When necessary, Barrier Ring or Ostomy Paste should be used in combination to reduce the risk of leakage.

6. Characteristics of excrement

Excrement state	Requirements for manufacturing pockets
Formed	You can choose a closed bag, but Convex is still required
Soft stool/semi-liquid	Deep Convex + High absorption Barrier
Frequent defecation	High durability system, reducing replacement

Types of Ostomy Bags skin barrier

Convex Skin Barrier

The raised part in the middle exerts light pressure on the skin around the stoma. It helps to enhance the sealing between the stoma base and the skin, preventing leakage. It is suitable for patients with flat stoma, slight depression, and uneven or wrinkled skin around the stoma.

Flat Skin Barrier

This is the most common type of skin barrier. The surface of the flat skin barrier is smooth and can be directly adhered to the skin. It is suitable for cases where the stoma protrudes and the surrounding skin is flat without any depressions.

Cut-to-Fit Skin Barrier

It can be cut according to the shape of the stoma. It is suitable for patients with irregular stoma shapes or those who have just undergone surgery.

Pre-cut Skin Barrier

The opening size is fixed, eliminating the need for additional cutting and making replacement simpler and more convenient. It is suitable for long-term users with stable stoma dimensions.

Malleable Skin Barrier

The moldable skin barrier can be stretched and shaped. For some patients, the stoma shape is irregular. This barrier can be freely shaped and perfectly fit the skin around the stoma, thereby enhancing the sealing performance, protecting the skin and reducing leakage.

1. Do you prefer a click or a flexible adhesive coupling?

Modern two-piece ostomy bags mainly have two connection systems: Click system and Flexible adhesive coupling.

	Click system	Flexible Adhesive Coupling
Connection method	The plastic lock ring “clicks” in and is fixed	The chassis and the bag body are bonded together through a flexible rubber ring
Fixed strength	Very firm	Firm but softer
Suitable for abdominal curved surfaces	It is relatively hard and has poor adaptability to curved surfaces	Very soft, suitable for curvaceous bellies
Wearing comfort	Medium, because the lock ring is relatively hard	It’s extremely high and has excellent adhesion
The impact on the skin during replacement	The snap needs to be pushed and pressed, which exerts pressure on the abdomen	Almost stress-free, suitable for sensitive skin
Auditory feedback	“Click” confirms the lock	Silent fit
Suitable user types	Those who like a distinct sense of confinement and have a high level of activity	Users with sensitive skin and a distinct curved abdomen
Whether it is suitable for deep convex surfaces	Suitable	Suitable, especially for deep convex stoma bags

Find The best ostomy bag for flat stoma at zodelo

Best ostomy bag for flat stoma are not merely simple medical consumables; they are also important tools for stoma patients to regain confidence and maintain a normal life. Only by correctly understanding best ostomy bag for flat stoma can one scientifically and correctly care for the stoma and regain a healthier and more comfortable life.

Zodelo is committed to providing high-quality stoma bags: :Calmlora Series, Mellora Series, Joylora Series. We are constantly researching and upgrading ostomy care solutions, strictly adhering to medical safety standards, and providing all stoma patients with a reassuring, comfortable and reliable ostomy care experience.

Get our product catalog or contact us today!

FAQs about best ostomy bag for flat stoma

Q1. What are the best ostomy bag for flat stoma in 2026?

The best ostomy bag is zodelo ch as:Calmlora Series, Mellora Series, Joylora Series. Offering odor control, skin protection and leak prevention for flat stoma.

Q2. What to do when ostomy bag keeps leaking?

Remeasure the size of the stoma:At the same time, remeasure the diameter of the stoma, cut the chassis and make sure the opening size is 1-2mm larger than the stoma size.
Use leak-proof products:such as leak-proof rings and leak-proof pastes to enhance the adhesion between the base and the skin and improve the sealing performance.
Select the appropriate chassis:The stoma should be flush with the skin, and a flat chassis should be chosen. When the stoma is concave, choose a convex chassis.
To change the style of the bag:You can contact a professional doctor and, based on your specific condition and living habits, modify the bag style or choose a more adhesive base
Increase the frequency of replacement:Avoid leakage due to the bag being too full of contents.

Q3. How can I prevent leaks and odor?

Select the right structure :flat stoma prioritizes the use of Deep Convex ostomy bag. When necessary, cooperate with ostomy belt to ensure stable sealing.
Ensure sealing: Use the appropriate Skin Barrier. And use leak-proof rings or stoma paste in combination to enhance the sealing performance and prevent leakage.
Correct installation and replacement: Clean and thoroughly dry the skin before application. The chassis aperture is precisely matched with the size of the stoma. Replace in a timely manner as needed to avoid excessive wear.
Control the source of odors: Ensure that the chassis is in perfect contact with the skin and has good sealing. It can be used in combination with deodorizers. Drain it in time every day to prevent leakage.

Q3. Can I go swimming with an ostomy bag?

Absolutely fine. Most modern ostomy bags (such as Zodelo) have excellent water resistance and are designed to fully adapt to swimming, hot spring soaking, and outdoor water activities.
However, before swimming, it is necessary to change or empty the colostomy bag in advance. Use the leak-proof ring or leak-proof paste, colostomy bag waterproof cover in combination. Cover the filter holes with waterproof stickers to protect the filter. Swim in the water only after ensuring that the chassis is firmly adhered and completely sealed.
When swimming, it is necessary to pay attention to avoiding prolonged soaking, which may cause the skin barrier to stick loosely and lead to leakage. Avoid diving or overly intense movements that may cause stoma damage or the loss of the ostomy bag.

Conclusion - best ostomy bag for flat stoma

The best ostomy bag for flat stoma is not merely a simple medical consumable; it is also an important tool for flat stoma patients to regain their confidence and maintain a normal life. Only by choosing the best ostomy bag for flat stoma correctly and taking care of the stoma scientifically and properly can one regain a healthier and more comfortable life.

Zodelo is committed to providing best ostomy bag for flat stoma for stoma patients worldwide. We are constantly researching and upgrading stoma care solutions, strictly adhering to medical safety standards, and providing all stoma patients with a reassuring, comfortable and reliable stoma care experience.

Get our product catalog or contact us now!