A capture tube mechanism for delivering and releasing a self-expanding stentincludes acore wire on which a proximal portion of the stent is removably retained by adistal portion of atubular capture sleeve. In one embodiment, one or more elongated membersextending throughcorresponding apertures through the capture sleeve and out the distal end ofthe capture sleevecan be pulled to split the tubular capture sleeve to release the stent. Inanother embodiment, thecapture sleeve can be pulled proximally over one or more stop members providedon the corewire to release the stent.