A na-eji ngwaọrụ ịrị elu balloon a na-atụfu ya na ịwa ahụ PTCA yana catheter balloon. Gbasaa balloon ahụ site na iji ngwaọrụ mmụba balloon, si otú ahụ gbasaa arịa ọbara ma ọ bụ tinye stent n'ime arịa ahụ. A na-eji ethylene oxide na-agbapụta ngwa ngwa balloon a na-atụfu ya, ndụ shelf bụ afọ 3.