Colostomy bag

An ostomy pouching system is a prosthetic medical device that provides a means for the collection of waste from a surgically diverted biological system (colon, ileum, bladder) and the creation of a stoma. Pouching systems are most commonly associated with colostomies, ileostomies, and urostomies.

Pouching systems usually consist of a collection pouch plastic bag, known as a one-piece system or, in some instances involves a mounting plate, commonly called a flange, wafer or a baseplate, and a collection pouch that is attached mechanically or with an adhesive in an airtight seal, known as a two-piece system. The selection of systems varies greatly between individuals and is often based on personal preference and lifestyle. Ostomy pouching systems collect waste that is output from a stoma. The pouching system allows the stoma to drain into a sealed collection pouch, while protecting the surrounding skin from contamination.

Ostomy pouching systems are air- and water-tight and allow the wearer to lead an active lifestyle that can include all forms of sports and recreation.

Ostomy pouching systems are also sometimes referred to as an appliance, where the term appliance refers to a prosthesis, as a mechanical replacement for a biological function.

Most wafers/baseplates are manufactured using pectin or similar organic material and are available in a wide variety of sizes to accommodate a person's particular anatomy.

The internal opening must be the correct size to accommodate the individual's stoma while protecting the skin from contact with waste. The methods for sizing this opening vary depending on the type of wafer/baseplate; some pre-cut sizes are available, some users customize the opening using scissors. Manufacturers have recently introduced moldable wafers than can be shaped by hand without the need for scissors.

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