Yes, I have had a Foley 3 way cath before a couple of times, That sort of fills in the gaps....I only saw the scope gear on a bench, and agree, it looked quite slim. Not sure why they knock you out for it. When I came round, I was covered in a iodine looking stuff. Not sure if it was a lubricant or antiseptic?
Has taken a few days for the urethra to settle back. After a couple of DVIU sessions many years ago, not looking forward to his next plan, as he maybe planning much more.