STENT DEVICE DELIVERY SYSTEM

摘要

A stent device delivery system, comprising a stent device pusher (8), a radially expandable stent device (2) and an outer sheath. The stent device comprises a lumen and defines a longitudinal axis. The stent device is constrained in a radially contracted state by the outer sheath. There is a tacky material providing a tackiness between the stent device pusher and an inner surface of the stent device. The tacky material is distributed along the length of the stent device. The tacky material serves to resist axial movement of the stent device relative to the stent device pusher as the outer sheath slides axially over the stent device, yet allows the stent device to peel from the tacky material and expand to a radially expanded state as the outer sheath slides axially over the stent device to unconstrain the stent device. The stent device pusher comprises protrusions made of the tacky material that are distributed axially along the stent device and have a tacky interaction with the inner surface of the stent device. The tacky material is compressible and the stent device is embedded in the compressible material.