ʻO ka catheter urinary he paipu i hoʻokomo ʻia i loko o ka ʻōpū ma o ka urethra e hoʻokahe i ka mimi. Ma hope o ka hoʻokomo ʻia ʻana o ka catheter i loko o ka ʻōpū, aia kahi baluna ma kahi kokoke i ke poʻo o ka catheter e hoʻoponopono ai i ka catheter. Wahi a nā kāne like ʻole, nā catheters mimi i loko o ka catheter rubber maoli, silicone hiki ke hoʻokaʻawale ʻia rubber catheter a i ʻole polyvinyl chloride catheter (PVC catheter).