Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Tools and Equipment (hierarchy name)
5. equipment
6. [equipment by process]
7. medical equipment
8. catheters
9. balloon catheters

Anotations

Scope note:

Flexible, sterile tubes that pass throught the urethra and into the bladder to drain urine. These feature two separate channels, one to drain liquid, and one to keep the catheter in place through the use of a balloon filled with sterile water. This type of catheter was developed by the urologist Frederic E.B. Foley in the 1930s.