WCatheter
WArterial line
WBalloon catheter
WCentral venous catheter
WDialysis catheter
WFoley catheter
WGroshong line
WHickman line
WMurphy drip
WPeripheral venous catheter
WPeripherally inserted central catheter
WPort (medical)
WPulmonary artery catheter
WSuprapubic cystostomy
WUreteric balloon catheter
WUrinary catheterization