Hi iv'e had a Catheter inserted because i was in Hospital the least thing on my mind was porn, However i would not recommend it may do damage you which can't be repaired , take care
You can risk getting a major infection by using a Catheter. Inserting a catheter is supposed to be a sterile procedure. If not you create a portal of entry for bacteria to enter and thrive in a warm moist environment.
Please be careful