The control pump mechanism is placed in the labia for women and in the scrotum for men.  To use the sphincter, the person will squeeze the pump to divert urine (or feces) from the cuff to the balloon. This action will allow the sphincter to relax so that the person can urinate (or defecate). The cuff will then reinflate on its own in 3 to 5 minutes; the artificial rectal sphincter reinflates in 10 minutes.

Wow.  I didn’t realize those things came with their own pumps.  Can they do any tricks?