BalloonhydrophiliccoatingHydrophiliccoatingofcatheter-preparationofhydrophiliccoating-thinfilmspraying-ultrasonicsprayingWhentheballooncatheterentersthehumanbody,itwillcauseaseriesofreactions.Suchasvascularendothelialinjuryandbacterialadsorptioncausedbycatheterfriction.Inordertoreducethedamagecausedbyballooncatheterininterventionaltherapyandimprovethebiocompatibilityandlubricityofballooncathetersurface,thesurfaceofballooncatheterisusuallymodifiedbyhydrophilicproperty.Aneffectivemodificationmethodistosolidifyhydrophilicsolutiononthesurfaceofballooncatheter.