Delivery systems for self-expanding devices are provided having a system
proximal portion with a handle, an elongate middle section delivery
device with an outer sheath and inner compression member, and a system
distal portion including an outer guide channel member with first and
second end portions defining a guide channel that slidably receives an
inner guide channel member having a guide channel, the guide channels
being substantially aligned. A mounting region for self-expanding devices
is disposed radially between the inner and outer guide channel members.
The outer guide channel member has a stepped profile from a first outer
diameter to a second smaller outer diameter located near a transition
region having a breech position opening for passage of a wire guide,
catheter, or other medical instrument. The outer member is axially
slideable relative to the inner member to deploy a self-expanding device.
Methods of using and manufacturing are also provided.