Arterial narrowing is treated that way: the procedure is called balloon angioplasty. Google that.
Not recommended for the urethra. It is a destructive method.
Good thought anyhow. You just invented angioplasty.
Originally Posted by awstev
Thinking out aloud: Is there a medical device that is a narrow cylinder that can be inserted, and then pumped up/expanded once it is in the urethra?
Later - ttt