you may want to see if you can partner with adult diaper companies to include your video or an offer for your video with the package. this will give an idea of your market.

research and see what other products go with it. for example, my step-uncle used to have this problem. he used to carry around a liter jug in his car to pee in just in case. The Pee Jug??

Do a focus group. Think about people who have this problem, go through their day and see what they would need to alleviate problems and make their day easier.