Patent ID: 9339368
Filing Date: 2016-05-17
CPC Classification: A61B,A61F

Claim Text:
1. A delivery system for deploying a tubular thin film and a mechanically expandable stent, the system includes the tubular thin film and the stent prior to their deployment, the tubular thin film including a self-supporting biocompatible metal or pseudometals of a thickness from between 1 micron and 250 microns, and further comprising: a long and flexible tubular shaft having proximal and distal ends and defining an inner lumen there through; a retractable, tubular outer sheath attached along the distal end of the long and flexible tubular shaft and configured to extend along the length of the tubular thin film, the outer sheath being configured to constrain the tubular thin film in a longitudinally stretched position having a constrained length L a mechanical expansion catheter substantially coaxial to, and slideably engaged within, the outer sheath, the mechanical expansion catheter comprising the mechanically expandable stent coaxially mounted on a radially expandable expansion member, the expansion member being configured to mechanically expand the expandable stent by generation of a radially directed force; and a secondary sheath disposed next to the stent to surround the stent, the secondary sheath comprising a composite structure incorporating an inner layer, an outer layer, and a middle layer, such that the inner layer and outer layer help to prevent the stent from becoming too imbedded into the secondary sheath prior to stent deployment, the secondary sheath being of a smaller diameter than the outer sheath and coaxial thereto with the thin film surrounding the secondary sheath, the secondary sheath serving to hold the stent in a constrained position.