I-PTFE yezokwelapha (Polytetrafluoroethylene) Guidewireiyisisetshenziswa sezokwelapha esikhethekile esisetshenziswa ezinqubweni ezehlukene ezihlasela kancane ukuze uzulazule emithanjeni yegazi, emathanjeni, noma kwezinye izakhiwo ze-anatomical. I-PTFE, i-synthetic fluoropolymer, yaziwa ngokuthambisa kwayo okukhethekile, ukumelana namakhemikhali, kanye nokuvumelana kwe-biocompatibility, okuyenza ibe into ekahle yokuhlanganisa izintambo zokuqondisa. Izintambo ze-PTFE-coated zenzelwe ukuhlinzeka ngokuzulazula okushelelayo, ukunciphisa ukungqubuzana, nokunciphisa ukuhlukumezeka ezicutshini ngesikhathi sezinqubo zezokwelapha.