Self catheterization - male: MedlinePlus Medical Encyclopedia - Penis cathetor
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In urinary catheterization a latex, polyurethane, or silicone tube known as a urinary catheter is inserted into a patient's bladder via the urethra. Catheterization allows the patient's urine to drain freely from the bladder for collection. A urinary catheter is a thin, flexible rubber tube placed in your body to drain urine from your bladder out through your penis. Your bladder is a muscle shaped like.