Due to the Bane outfit having no openings, Alexandra being sealed airtight, except for the maintenance port between her legs, hygiene functions such as urine have to be handled differently. To manage this, a special urinary catheter is inserted, designed for indefinite use.
The catheter comes in the form of a somewhat flexible rubber phallus, about 2 cm thick, that is inserted into the urethra and reaches all the way into the bladder. Inside the bladder, there’s a custom-made stopper-balloon on the inner end, that is pumped full of the biocompatible polymer, to the point of almost completely filling Alexandra’s bladder. This ensures that all the urine is drained through the catheter, while making the removal completely impossible. The phallus part of the catheter can also vibrate and shock Alexandra from within her urethra, causing constant discomfort and even pain.
Later on, the polymer in the balloon also dissolves the balloon and begins integrating and growing together with the surrounding bladder tissue, becoming Alexandra’s new permanent way of draining her urine.
The outer end of the catheter is then connected to a small port on the base of the vaginal dildo. This drains all the urine into the vaginal insert, and then into the second layer of the core unit, slowly inflating that layer with Alexandra’s urine. This allows Alexandra to hold a large amount of urine within her womb, without needing to drain it in a cleaning cycle.