Conrad I understand that issue, that's ... awful, I also had a similar once. Luckily everything still works, just some damaged skin... still, that's not a very comfortable place to be injured, if there is any.
Well, I can only hope and pray for you to heal soon.
As you want to be locked ... habe you ever thought about wearing a belt instead of a cage? That is way less stressing for the testicles ... in case that's where the issue is. You just need to be really keen on clesning the belt, like twice a day, to not catch an infection