An accurate labeled educational medical diagram showing common urinary catheter types arranged in a clear grid: straight intermittent Nelaton catheter, Foley indwelling catheter with retention balloon and drainage port, Coude/Tiemann catheter with curved tip, three-way Foley catheter with irrigation port, suprapubic catheter, and Malecot catheter with winged tip. Show simplified cross-sectional tip details where helpful, with clean labels and a short title: Types of Urinary Catheters.