Expandable body cavity liner device

Abstract

The present invention is an aneurysm treatment device for treating aneurysms of various shapes and sizes.

1 . A aneurysm occlusion device, comprising:
 an expandable liner for delivery within an aneurysm; and   a first extender coil disposed within said expandable liner, said first extender coil having a restrained shape in axial alignment with a delivery device when restrained by said delivery device, and a curved relaxed shape when removed from the delivery device such that said first extender coil bears against the expandable liner causing the expandable liner to expand toward the walls of an aneurysm.   
   
   
       2 . The aneurysm occlusion device of  claim 1 , further comprising a second extender coil disposed with said expandable liner, said second extender coil having a restrained shape in axial alignment with an delivery device when restrained by the delivery device, and a curved relaxed shape when removed from the delivery device such that said second extender coil bears against the expandable liner causing the expandable liner to expand toward the walls of an aneurysm 
   
   
       3 . The aneurysm occlusion device of  claim 2 , wherein said first extender coil and said second extender coil are biased to extend in opposite directions when removed from the delivery device. 
   
   
       4 . The aneurysm occlusion device of  claim 2 , further comprising a reinforcing layer disposed around a proximal portion of said expandable liner to strengthen the proximal portion of the expandable liner to prevent the expandable liner from expanding through a neck of an aneurysm and into a parent vessel of the aneurysm upon inflation of the expandable liner within the aneurysm. 
   
   
       5 . The aneurysm occlusion device of  claim 1 , wherein the expandable liner is perforated to allow blood to escape from the expandable liner. 
   
   
       6 . The aneurysm occlusion device of  claim 1 , wherein the expandable liner is configured to be detachably connected to a delivery catheter. 
   
   
       7 . An aneurysm occlusion device, comprising:
 an elongated delivery catheter having a proximal end, a distal end and a lumen therethrough;   an expandable liner for delivery within an aneurysm, said expandable liner detachably connected to the distal end of said elongated catheter;   a guidewire extending through said lumen of said delivery catheter and into said expandable liner;   a first extender coil disposed within said expandable liner and over said guidewire, said first extender coil having a restrained shape in axial alignment with said guidewire when restrained by said guidewire, and a curved relaxed shape when said guidewire is withdrawn from said first extender coil such that said first extender coil bears against the expandable liner causing the expandable liner to expand toward the walls of an aneurysm.   
   
   
       8 . The aneurysm occlusion device of  claim 7 , further comprising a second extender coil disposed with said expandable liner and over said guidewire, said second extender coil having a restrained shape in axial alignment with said guidewire when restrained by said guidewire, and a curved relaxed shape when said guidewire is withdrawn from said second extender coil such that said second extender coil bears against the expandable liner causing the expandable liner to expand toward the walls of an aneurysm 
   
   
       9 . The aneurysm occlusion device of  claim 8 , wherein said first extender coil and said second extender coil are biased to extend in opposite directions when removed from the delivery device. 
   
   
       10 . The aneurysm occlusion device of  claim 8 , further comprising a reinforcing layer disposed around a proximal portion of said expandable liner to strengthen the proximal portion of the expandable liner to prevent the expandable liner from expanding through a neck of an aneurysm and into a parent vessel of the aneurysm upon inflation of the expandable liner within the aneurysm. 
   
   
       11 . The aneurysm occlusion device of  claim 7 , wherein the expandable liner is perforated to allow blood to escape from the expandable liner. 
   
   
       12 . The aneurysm occlusion device of  claim 7 , wherein the expandable liner is configured to be detachably connected to a delivery