a stent delivery system for delivering a stent , the stent delivery system having a push catheter , a guide member , and an elongated stent securing material having a first portion arranged to a push catheter outer surface , a second portion , a third portion , and a fourth portion arranged to the push catheter outer surface , in that order . the first portion and the fourth portion are arranged to the push catheter outer surface such that only one of the first portion and the fourth portion is present on a cross - section plane orthogonal to the longitudinal axis . the stent delivery system is configured to have a secured configuration in which the guide member is arranged within a push catheter lumen and a stent lumen and through a loop formed by a section between the second portion and the third portion to secure the stent .