A Two-piece ostomy bag - Urostomy bag (drainable) is a specialized, single-use appliance designed for the collection and management of urine following urinary diversion surgery (urostomy or ileal conduit) . This two-piece system consists of a drainable pouch that attaches to a separate baseplate (skin barrier/flange), allowing the baseplate to remain securely adhered to the peristomal skin while the pouch is emptied or replaced . The pouch is engineered specifically for urine with features not found on colostomy/ileostomy bags, including an integrated anti-reflux valve to prevent urine backflow toward the stoma (reducing urinary tract infection risk), a secure drainage tap for hygienic emptying, and a universal connector for overnight bedside drainage bag attachment .
The urostomy pouch features a mechanical coupling system (flex coupling or guided coupling) with an audible "click" confirming secure locking onto the baseplate. The anti-reflux valve is essential for infection prevention; when a patient lies flat during sleep, gravity can cause pooled urine to flow back toward the stoma, potentially introducing bacteria into the upper urinary tract . The drainage tap provides secure 'open/close' positions with a click lock, designed to leave no residual drops on fingers after emptying .
Constructed with multi-layer, 100% odor-proof film and covered with soft, breathable non-woven fabric (available in beige with inspection window or fully transparent options), the pouch is available in capacities from approximately 620 mL to 675 mL depending on flange size . The universal connector provided with each box features an anti-twist design for kink-free night drainage connection .
For the urologist and stoma care nurse, the two-piece urostomy system simplifies post-operative management following cystectomy for bladder cancer. For the patient, this appliance provides security, confidence, and the freedom to participate fully in daily activities while the anti-reflux valve and night drainage compatibility protect kidney function and prevent serious urinary infections .