Methods and systems for treatment of aneurysms

Abstract

A method and device include attaching a tether portion of a sleeve to a distal end of a catheter, placing the distal end of the catheter into a selected position within a vessel, moving a stent through a lumen of the catheter, retentively engaging a first end of the stent with a distal end of the sleeve, and detaching the sleeve about the tether portion such that the sleeve covers at least a portion of the stent at the selected position within the vessel.

1 . (Canceled) 
     
     
         2 . A deformable sleeve having a proximal end to couple to a distal end of a catheter, the sleeve including a hole positioned at a distal end of the sleeve and adapted to engage a strut of a stent advanced through a lumen of the catheter, and a tethered portion positioned between the proximal end of the sleeve and the distal end of the sleeve. 
     
     
         3 . The sleeve of  claim 2  wherein the tethered portion comprises an annular set of perforations closer to the proximal end of the sleeve. 
     
     
         3 . The sleeve of  claim 2  and further comprising a therapeutic coating on an outside of the sleeve. 
     
     
         4 . The sleeve of  claim 2  wherein the therapeutic coating comprises a drug. 
     
     
         5 . The sleeve of  claim 3  wherein the therapeutic coating comprises multiple drugs coating different portions of the outside of the sleeve. 
     
     
         6 . The sleeve of  claim 4  wherein the therapeutic coating comprises cells. 
     
     
         7 . The sleeve of  claim 2  wherein the sleeve comprises a polymer. 
     
     
         8 . The sleeve of  claim 7  wherein the polymer comprises two or more polymers with different properties. 
     
     
         9 . The sleeve of  claim 2  wherein the sleeve has a wall thickness of between 0.00635 mm and 0.127 mm. 
     
     
         10 . The sleeve of  claim 2  wherein the sleeve has a length between the perforations and the distal end of between 1 mm-100 mm. 
     
     
         11 . The sleeve of  claim 2  wherein the sleeve is tapered from the proximal end to the distal end. 
     
     
         12 . A device including a catheter having a lumen and a distal end, a deformable sleeve having a proximal end coupled to the distal end of the catheter, the sleeve having a hole positioned at a distal end of the sleeve and adapted to engage a strut of a stent advanced through the catheter lumen, and the sleeve having a tethered portion positioned between a proximal end of the sleeve and a distal end of the sleeve. 
     
     
         13 . The device of  claim 12  and further including a sheath disposed over at least a portion of the sleeve. 
     
     
         14 . The device of  claim 12  wherein the sleeve comprises a therapeutic coating. 
     
     
         15 . The device of  claim 12  wherein the sleeve comprises a polymer having a wall thickness of between 0.00635 mm and 0.127 mm and a length between the perforations and the distal end of between 1 mm-100 mm. 
     
     
         16 . The device of  claim 12  wherein the sleeve is tapered from the proximal end to the distal end. 
     
     
         17 . A device comprising:
 stent having a strut extending from a first end of the stent;   a deformable sleeve covering the stent between the first end and a second end of the stent, the sleeve having a distal end with a hole engaged with the strut and a proximal end of the sleeve extending toward the second end of the stent, the proximal end including a tethered portion.   
     
     
         18 . The device of  claim 17  wherein the stent is expanded into retentive contact with the sleeve. 
     
     
         19 . The device of  claim 17  wherein the tethered portion of the stent comprises remaining portions of an annular set of perforations. 
     
     
         20 . The device of  claim 17  wherein the sleeve comprises a therapeutic coating.