I-IV Catheter yeyezinto ezityiwayo zonyango, ngoko ke amaxesha okusetyenziswa kwazo aphezulu kakhulu.
Okwangoku, ukwanelisa iimfuno ezahlukeneyo kunye nokusebenzisa imikhwa, siyile iintlobo ezininzi.Singakunika izibuko lokutofa, ibhabhathane, iPen-like kunye nePhiko elincinci.
Malunga nobukhulu benaliti, sinokukunika i-14G, 16G, 18G, 20G, 22G, 24G kunye ne-26G.
Kwangaxeshanye, abathengi banokukhetha umbala owahlukileyo ukuze bahlule. Sinemibala eqhelekileyo, enjengepinki, eluhlaza, tyheli njalo njalo.