A urinary catheter is inserted into the bladder for passive urine voidance or retrogade filling of the bladder. It is made from plastic.
The process of inserting the catheter is called catheterization.
A transurethral urinary catheter is pushed through the urethra into the bladder. Two different forms can be differentiated:
Single use catheters:
Long term use catheters:
(Source: Oeclan)