I'm required to self catheterize three times a day in an eff

I'm required to self catheterize three times a day in an effort to keep urine volume below 400cc. I'm looking for an ultrasonic measuring device that will measure urine volume. This will eliminate the hit and miss method that I use now. I would appreciate any help that you could provide.

I suggest you contact Verathon as I believe they have a portable ultrasound device that can be used to measure bladder volume. Verathon Medical Inc. www.verathon.com