I-catheter yenziwe nge-nylon ekhethekileyo ene-elasticity elungileyo, amandla aphezulu, akukho lula ukuphuka. Inophawu lwesikali esicacileyo kunye ne-X-ray yokuthintela umgca, olungisa kakuhle indawo. Inokufakwa emzimbeni womntu ixesha elide, kwaye isetyenziselwa i-anesthesia ngaphambi nasemva kokuhlinzwa.