Patent ID: 9724216
Date: 2017-08-08
CPC Classifications: A61F,A61M

Claim:
1. A stent device delivery system, comprising: a stent device; an outer sheath comprising a first polymer-based layer, a polymer-based reinforcement layer, and a glue layer disposed between the first layer and the reinforcement layer wherein the outer sheath overlays the stent device in a radially compact, delivery configuration of the stent device, the outer sheath retractable from a distal end of the stent device to a proximal end of the stent device to allow for radial expansion of the stent device to a deployed configuration; an outer catheter extending distally from a proximal end of the system and ending proximally of the stent device wherein the outer catheter is disposed radially outward of a proximal end of the outer sheath; an inner catheter extending axially and radially within a lumen of the stent device and providing a stent bed upon which the stent device is located so that a radially inner surface of the stent device engages a radially outer surface of the stent bed, wherein the stent bed defines an inwardly tapering profile, narrowing in radius from a distal portion of the stent device to a proximal portion of the stent device; and a pull member for retracting the outer sheath from the stent device, wherein the pull member is embedded in the glue layer, sandwiched between the first layer and reinforcement layer, and a proximal end of the pull member is disposed radially inward of the outer catheter wherein the outer sheath comprises an inner layer contacting an outer surface of the stent device, an outer layer and a fold-over portion connecting the inner layer and the outer layer, so that proximal movement of the outer layer relative to the inner layer causes the fold-over portion to move proximally axially relative to the stent device in a rolling manner and thus enables retraction of the outer sheath.