A<unk>  is a type of "soft"<unk>  with an inflatable<unk> " at its tip which is used during a<unk> ization procedure to enlarge a narrow opening or passage within the body. The deflated<unk>  is positioned, then inflated to perform the necessary procedure, and deflated again in order to be removed.
Some common uses include:
angioplasty or<unk>  septostomy, via cardiac<unk> ization (heart cath)
tuboplasty via uterine<unk> ization
Balloon catheter
Catheter
Cutting balloon
Surgical suture
Guidewire prowater
Dor procedure
Radiocontrast
Volvulus surgery