Coloplast Assura One-Piece Midi Flat Extra-Extended Wear Cut-to-Fit Urostomy Pouch

SKUs: 12471 | 12472 | 12474  |  Cut-to-Fit 3/8"–2-1/4" (10–55mm)  |  9-1/2" Pouch  |  5 Adapters Included  |  Made in USA  |  FSA Eligible  |  Latex Free

A urostomy-specific one-piece pouching system with Coloplast's spiral adhesive formulated for urostomy wear, a built-in anti-reflux valve to prevent urine from washing over the stoma, and a soft plastic drain outlet designed to empty completely without residual urine. Extra-extended wear barrier for prolonged seal between changes. Cut-to-fit opening from 3/8" to 2-1/4" (10mm to 55mm). Available in opaque and transparent film in two volumes. 10/pack.

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Choose volume based on output frequency and lifestyle. Choose transparency based on monitoring preference. Questions? 1-866-218-0902

Key Features

• Anti-reflux valve — prevents urine from flowing back over the stoma, reducing risk of ascending urinary tract infections
• No-residual-urine drain design — pouch empties completely through the soft plastic outlet without urine pooling at the drain
• Soft plastic drain outlet — easy to open and close; gentle on hands during repeated daily drainage
• Spiral adhesive — specially adapted for urostomy wear; secures to peristomal skin while absorbing moisture to protect surrounding skin
• Extra-extended wear barrier — longer wear time than standard or conventional extended wear barriers
• Cut-to-fit stoma opening — trimmable from 3/8" to 2-1/4" (10mm to 55mm) to fit any stoma size or shape
• One-piece system — barrier and pouch permanently integrated; entire appliance changed together
• Flat barrier — for normally protruding urostomy stomas
• 9-1/2" (24cm) midi pouch length
• 5 drainage adapters included for nighttime drainage connection
• Available in 265ml opaque (12471), 265ml transparent (12472), and 375ml transparent (12474)
• Made in USA | FSA eligible | Latex free
• 10 pouches per box

Clinical FAQs

What is a urostomy and how is it different from a colostomy or ileostomy?

A urostomy (most commonly an ileal conduit) is a surgically created opening that diverts urine from the body after the bladder has been removed or bypassed. Unlike a colostomy (which diverts stool from the colon) or ileostomy (which diverts stool from the small intestine), a urostomy produces continuous urinary output — urine flows constantly rather than intermittently. This continuous flow creates a fundamentally different pouching requirement: the barrier must resist constant moisture exposure, the pouch must drain frequently rather than be discarded when full, and an anti-reflux mechanism is needed to protect the stoma from urine backwash.

What does the anti-reflux valve do clinically?

When a urostomy pouch is worn during normal daily activity, movement can cause urine already collected in the pouch to slosh back upward toward the stoma — a phenomenon called reflux. If urine repeatedly contacts the stoma surface and the surrounding peristomal skin, it increases the risk of ascending urinary tract infections (bacteria traveling upward into the urinary conduit) and contributes to peristomal skin breakdown from constant moisture exposure. The anti-reflux valve is a one-way mechanism inside the pouch at the stoma opening that allows urine to flow down into the pouch but prevents it from flowing back toward the stoma. This is a clinically significant urostomy-specific feature not found in colostomy or ileostomy pouches.

What does "extra-extended wear" mean for a urostomy barrier?

Standard wear barriers are designed for 1–3 day wear. Extended wear barriers are designed for 3–5 days. Extra-extended wear (Coloplast's designation for this product) is designed for longer wear periods — typically 5–7 days for appropriate patients. The key challenge for urostomy barriers is that urine is a constant, dilute acid that steadily erodes hydrocolloid barrier materials over time. Extra-extended wear formulations use adhesive materials with higher moisture resistance and slower erosion rates, maintaining their seal longer under continuous urine exposure than standard barriers. Actual wear time varies by individual output, activity level, and peristomal skin condition.

How does the spiral adhesive differ from a standard flat hydrocolloid barrier?

Coloplast's spiral adhesive structures the barrier material in a spiral pattern combining two functional properties: secure mechanical adhesion to the peristomal skin, and moisture absorption that draws perspiration and surface urine away from the peristomal skin. The moisture absorption is particularly important for urostomy patients because the stoma is in continuous contact with urine — the spiral structure helps manage this moisture at the skin interface while maintaining adhesive function. A flat hydrocolloid barrier absorbs moisture less efficiently and saturates more quickly, which can reduce wear time and increase the risk of peristomal dermatitis from prolonged moisture exposure.

What are the five adapters for?

The five adapters included in each box are nighttime drainage connectors. During sleep, a urostomy pouch needs to be connected to a bedside drainage bag so the patient does not need to get up multiple times to empty the pouch. The adapter connects the soft drain outlet of the urostomy pouch to the tubing of a standard leg bag or bedside drainage bag. Using a nighttime drainage system also prevents the pouch from overfilling during sleep, which can stress the barrier seal and increase leakage risk. Always confirm the adapter is compatible with your nighttime drainage bag before first use.

How do I choose between 265ml and 375ml volume?

Volume selection depends on output volume, emptying preference, and activity level. Most adult urostomy patients produce approximately 1,000–1,500ml of urine per day. With a 265ml pouch, most patients need to empty 4–6 times daily; with a 375ml pouch, 3–4 times. For patients who want to empty less frequently, prefer a less visible profile while maintaining a larger reserve (such as during longer outings), or have high urine output, the 375ml is the more practical choice. For patients who prefer a lower-profile pouch under clothing and are comfortable emptying more frequently, the 265ml is appropriate. The midi 9-1/2" length is the same for both.

Should I choose transparent or opaque film?

Transparent film (SKU 12472, 12474) allows visual monitoring of urine color, output volume, and stoma appearance without removing the pouch. This is clinically preferred during the early post-operative period and for patients who monitor their urine for blood, sediment, or color changes as part of ongoing health monitoring. Opaque film (SKU 12471) provides privacy and discretion — the pouch contents are not visible through clothing or during changes. Many patients transition to opaque film once they are comfortable with their urostomy and no longer need to monitor output visually at every emptying.

Questions about urostomy pouches, adapter compatibility, or nighttime drainage systems? Call our product specialists: 1-866-218-0902