Urinary catheters are used to fully drain the bladder. A health care provider may recommend buying catheters online to treat issues such as:
Urinary incontinence, such as leaking urine or being unable to control urination.
Urinary retention - the inability to completely relieve your bladder of urine when you need to.
After surgery on the prostate or genitals.
Other medical conditions, such as multiple sclerosis or a spinal cord injury.