Aneurysm treatment device

Abstract

An implant having an elongated portion and an expandable braided sack portion can be delivered through a catheter and implanted in an aneurysm such that elongated portion loops within the braided sack, the braided sack contacts a majority or all of the aneurysm wall, and the braided sack at least partially occludes the aneurysm neck.

1 . An implant comprising:
 an expandable braided sack portion comprising a free open end;   an elongated looping portion joined to the expandable braided sack portion; and   a detachment feature joined to the elongated looping portion and detachably attached to a delivery system,   
       wherein the implant is movable from a delivery configuration sized to traverse through a lumen of a catheter of the delivery system to an implanted configuration sized to secure within an aneurysm, 
       wherein in the delivery configuration, the expandable braided sack portion extends from a distal end of the implant, the elongated looping portion extends proximally from the expandable braided sack portion, and the detachment feature is positioned approximate a proximal end of the implant, 
       wherein in the delivery configuration, the expandable braided sack portion is unattached to the delivery system, 
       wherein in the implanted configuration, the expandable braided sack portion is sized to contact a majority of an interior wall of the aneurysm, is sized to contain the elongated looping portion, and is sized to occlude at least a portion of a neck of the aneurysm, 
       wherein in the implanted configuration, the free open end is positioned to be placed approximate the neck, and 
       wherein in the implanted configuration, the elongated looping portion is sized to wind within the expandable braided sack portion. 
     
     
         2 . The implant of  claim 1 , wherein, in the delivery configuration, the implant comprises a fold approximate the distal end of the implant, the expandable braided sack portion encompasses at least a portion of the elongated looping portion, and the free open end encircles the elongated looping portion. 
     
     
         3 . The implant of  claim 1 , wherein, in the delivery configuration, the free open end is positioned at the distal end of the implant. 
     
     
         4 . The implant of  claim 1 , wherein, in the implanted configuration, a fold defining a boundary between the elongated looping portion and the expandable braided sack portion is positioned to be implanted approximate a distal surface of the interior aneurysm wall. 
     
     
         5 . The implant of  claim 1 , wherein the elongated looping portion and the expandable braided sack portion are portions of a contiguous tubular braid. 
     
     
         6 . The implant of  claim 5 , wherein, in the implanted configuration, the elongated looping portion comprises a substantially uniform circumference along a majority of its length, the length measurable from the detachment feature to a fold defining a boundary between the elongated looping portion and the expandable braided sack portion. 
     
     
         7 . The implant of  claim 1 , wherein the elongated looping portion comprises an embolic coil, and wherein the expandable braided sack portion comprises a tubular braid. 
     
     
         8 . The implant of  claim 1 , wherein the implant consists of the expandable braided sack portion, the elongated looping portion, and the detachment feature. 
     
     
         9 . The implant of  claim 1 , wherein the detachment feature remains attached to the delivery system after detachment from the implant. 
     
     
         10 . An implant comprising:
 an expandable braided sack portion comprising a free open end;   an embolic coil joined to the expandable braided sack portion by a connecting band; and   a detachment feature joined to the embolic coil and detachably attached to a delivery system,   
       wherein the implant is movable from a delivery configuration sized to traverse through a lumen of a catheter of the delivery system to an implanted configuration sized to secure within an aneurysm, 
       wherein in the delivery configuration, the expandable braided sack portion extends from a distal end of the implant, the embolic coil extends proximally from the expandable braided sack portion, and the detachment feature is positioned approximate a proximal end of the implant, 
       wherein in the delivery configuration, the expandable braided sack portion is unattached to the delivery system, 
       wherein in the implanted configuration, the expandable braided sack portion is sized to contact a majority of an interior wall of the aneurysm, is sized to contain the embolic coil, and is sized to occlude at least a portion of a neck of the aneurysm, 
       wherein in the implanted configuration, the free open end is positioned to be placed approximate the neck, and 
       wherein in the implanted configuration, the embolic coil is sized to fit within the expandable braided sack portion. 
     
     
         11 . The implant of  claim 10 , wherein, in the delivery configuration, the implant comprises a fold approximate the distal end of the implant and a fold approximate the connecting band, the expandable braided sack portion encompasses at least a portion of the embolic coil, and the free open end encircles the embolic coil. 
     
     
         12 . The implant of  claim 10 , wherein, in the delivery configuration, the free open end is positioned at the distal end of the implant. 
     
     
         13 . The implant of  claim 10 , wherein, in the implanted configuration, the fold approximate the distal end of the implant is positioned to be implanted approximate a distal surface of the interior aneurysm wall. 
     
     
         14 . The implant of  claim 10 , wherein the implant consists of the expandable braided sack portion, the embolic coil, the connecting band, and the detachment feature. 
     
     
         15 . The implant of  claim 10 , wherein the detachment feature remains attached to the delivery system after detachment from the implant. 
     
     
         16 . An implant comprising:
 an expandable braided sack portion comprising a free open end;   an elongated looping portion joined to the expandable braided sack portion; and   a detachment feature joined to the elongated looping portion and detachably attached to a delivery system,   
       wherein the implant is movable from a delivery configuration sized to traverse through a lumen of a catheter of the delivery system to an implanted configuration sized to secure within an aneurysm, 
       wherein in the delivery configuration, the expandable braided sack portion extends from a distal end of the implant, the elongated looping portion extends proximally from the expandable braided sack portion, and the detachment feature is positioned approximate a proximal end of the implant, 
       wherein in the delivery configuration, the expandable braided sack portion is unattached to the delivery system, 
       wherein in the implanted configuration, the expandable braided sack portion is sized to contact a majority of an interior wall of the aneurysm, is sized to contain the elongated looping portion, and is sized to occlude at least a portion of a neck of the aneurysm, 
       wherein in the implanted configuration, the free open end is positioned to be placed approximate the neck, 
       wherein in the implanted configuration, the elongated looping portion is sized to wind within the expandable braided sack portion, and 
       wherein in the implanted configuration, the expandable braided portion is inverted. 
     
     
         17 . The implant of  claim 16 , wherein, in the delivery configuration, the implant comprises a fold separating the expandable braided sack portion and the elongated looping portion. 
     
     
         18 . The implant of  claim 17 , wherein in the implanted configuration, the fold is positioned near a distal surface of the aneurysm wall. 
     
     
         19 . The implant of  claim 16 , wherein the elongated looping portion and the expandable braided sack portion are portions of a contiguous tubular braid. 
     
     
         20 . The implant of  claim 16 , wherein the elongated looping portion comprises an embolic coil, and wherein the expandable braided sack portion comprises a tubular braid.