Here I used a triangle with rounded corners to have a soft representation of the urinary system. The little line and the circles represent the bladder and the urethra, but I arranged it to look like a tree. Since tree is such an appealing object, it can be interpreted as "something pleasant in your urinary system." Also if we want to go a little further, one of the characteristics of the trees is that they retain water, so this logo would talk about a solution to incontinence with an element that doesn't leak.
I hope you get where I'm coming from :), feedback is really appreciated. Thanks!