Torbot - Medena Continent Ostomy Catheter (30 Fr) is an easy-to-use one piece straight tip 30 Fr ostomy catheter. "Fr" refers to the diameter of the catheter. These ostomy supplies are specifically designed for continent ileostomies. Torbot Medena catheters are preferred by many users for comfort and effective catheterization. The 12" Medena catheter can be trimmed to your desired over-all length.