Japan is dealing with their problem of aging population by automating health care. This automatic drying diaper could replace catheters and provide extra benefits.
Catheters might be cheaper in the short run but risk infections, are uncomfortable to insert and remove and require some training to insert. This automatic drying diaper requires no training, is much more comfortable with less risk of infection and offers other advantages.
Since there is already some electronics this device could be easily expanded to measure amounts and times, perform tests on the contents to monitor health and help with diagnostics plus alert care givers of needed care.
This is just one of the 15 Alternatives solution types. A diaper that automatically dries itself is an example of Return to Stable, and this one does it multiple times. A disposable diaper is a Single Stable, although not very stable. A catheter is a Multiple Direct, it directly catches urine multiple times. That is only 3 of the possible 15 solution types. There are 12 other types of innovation possible.