Ko te catheter he mea hanga mai i te nylon motuhake me te pai o te elasticity, te kaha tensile teitei, e kore e ngawari ki te pakaru. He tohu tauine marama me te raina arai X-ray, he pai te whakatika i te waahi. Ka taea te whakanoho ki roto i te tinana o te tangata mo te wa roa, ka whakamahia mo te rewharewha i mua i muri i te mahi.