I agree with Cora. I can see absolutely no possible correlation between the pump and blood in the urine.
If all other test prove negative and he hasn't already had one, I'd suggest he push to have a cystoscopy done. This is where they actually look into the bladder through a scope. There could be a polyp in the bladder that is bleeding (polyps can be benign or cancerous), and that should be looked at.
Ruth