Controlled deployable medical device and method of making the same

Abstract

Controlled deployable medical devices that are retained inside a body passage and in one particular application to vascular devices used in repairing arterial dilations, e.g., aneurysms. Such devices can be adjusted during deployment, thereby allowing at least one of a longitudinal or radial re-positioning, resulting in precise alignment of the device to an implant target site.

1 . An apparatus, comprising:
 a catheter having a proximal end portion and distal end portion;   a stent arranged on the proximal end portion of the catheter, the stent having an inner surface and an outer surface;   a graft member arranged about the stent member; and   a movable element connected to a torsional member, wherein the torsional member is capable of retracting a portion of the movable element and thereby radially compressing at least a portion of the stent.   
     
     
         2 . The apparatus of  claim 1 , further comprising a tube having a proximal end portion and distal end portion arranged on at least a portion of the stent, wherein at least a portion of the torsional member extends within a portion of the tube. 
     
     
         3 . The apparatus of  claim 2 , wherein the distal end portion of the tube extends to a hub arranged on the distal end portion of the catheter. 
     
     
         4 . The apparatus of  claim 2 , wherein the tube comprises two lumens. 
     
     
         5 . The apparatus of  claim 1 , wherein the movable element comprises a filament. 
     
     
         6 . The apparatus of  claim 5 , wherein the filament comprises a wire. 
     
     
         7 . The apparatus of  claim 5 , wherein the filament comprises a polymer. 
     
     
         8 . The apparatus of  claim 7 , wherein the polymer comprises a fluoropolymer. 
     
     
         9 . The apparatus of  claim 8 , wherein the fluoropolymer comprises polytetrafluoroethylene. 
     
     
         10 . The apparatus of  claim 9 , wherein the polytetrafluoroethylene comprises expanded polytetrafluoroethylene. 
     
     
         11 . The apparatus of  claim 5 , wherein the filament is arranged circumferentially around the graft member and is threaded between adjacent undulations of the stent. 
     
     
         12 . The apparatus of  claim 1 , wherein the tubular graft member is positioned on an inside portion of the stent. 
     
     
         13 . The apparatus of  claim 2 , wherein the tube is positioned on an inside portion of the stent.