They may be thin, flexible tubes called soft catheters or thicker and more inflexible catheters called hard catheters. A catheter that may be left in the body, whether temporarily or permanently, is ...

A urinary catheter is a hollow, partially flexible tube that collects urine from the bladder and leads to a drainage bag. They come in many sizes and types. Catheters may be necessary in cases when ...

Medical catheters are tubes that can be inserted into a body cavity, vessel or duct, usually to allow for the administration of fluids, medications or gases or to drain fluids or urine from the body.