A stent delivery system configured to deliver a stent to a target region of a body lumen may include a catheter a stent associated with the catheter, the stent having a first region and a second region a balloon associated with the catheter, the balloon having a first balloon portion associated with the catheter proximate the first region of the stent and a second balloon portion associated with the catheter proximate the second region of the stent and a sheath about the stent and the balloon, the sheath maintaining the stent in an undeployed configuration for delivery to a target region of a body lumen. The sheath may comprise a first sheath region configured to split at a first pressure thereby permitting the first region of the stent to assume a deployed configuration, a second sheath region configured to split at a second pressure thereby permitting the second region of the stent to assume a deployed configuration, the second pressure being greater than the first pressure and the first pressure being insufficient to cause the second region of the sheath to split, a split-stopping structure between the first and second sheath regions, the split-stopping structure being configured to prevent a split from propagating from the first sheath region to the second sheath region at the first pressure.La présente invention concerne un système dinsertion de stent configuré pour insérer un stent dans une région cible dune lumière corporelle. Ledit système peut comprendre un cathéter, un stent associé au cathéter, le stent ayant une première région et une seconde région, un ballonnet associé au cathéter, ledit ballonnet ayant une première portion associée au cathéter à proximité de la première région du stent et une seconde portion associée au cathéter à proximité de la seconde région du stent, ainsi quune gaine autour du stent et du ballonnet, ladite gaine maintenant le stent dans une configuration non déployée pour linsérer dans une région cible dune lumière corporelle. La
