The patented Janjua Aneurysm Net is an intra-aneurysm device that is intended primarily to embolize narrow-neck cerebral aneurysms.  It is not approved by the FDA or available for patient use.  Janjua Aneurysm Net concept video.

The Janjua Aneurysm Net device involves filling and expanding a flexible and expandable net with soft embolic material in order to embolize the aneurysm.  For example, a flexible net can be inserted into the aneurysm and then filled with a liquid flow carrying microsponges.  The net allows fluid to escape, but traps the microsponges inside.  As the net fills with microsponges, it expands into gentle, but engaging, contact with the aneurysm walls.  The net fills virtually the entire volume of the aneurysm, even an irregularly-shaped one.  The porous net frictionally engages the aneurysm walls, which holds it within the aneurysm.  This device is less invasive than clipping and can fill a higher percentage of aneurysm volume than coiling.  It also preserves the option of subsequent clipping, if needed. Figures 1 through 3 illustrate one possible embodiment of the Janjua Aneurysm Net device. 

Figure 1 shows the aneurysm after the catheter with the net has been inserted into the aneurysm, but before the flow of microsponges into the net.  The catheter has been percutaneously introduced into a blood vessel and intravascularly guided into an aneurysm. 

Figure 2 shows this device as the net is being expanded by a liquid flow, such as a sterile saline solution, carrying multiple microsponges.  The openings in the net allow the liquid flow to escape through the openings, but trap the multiple microsponges inside the net.   The accumulating microsponges within the net gently expand the net into contour-conforming contact with the aneurysm wall of the interior of the aneurysm.
 
 

Figure 3 shows this device after the net has been filled with multiple microsponges in order to fill the volume of the aneurysm.  The catheter has been removed from the blood vessel and the body.  This leaves the net fully expanded into contour-conforming contact with the interior walls of the aneurysm.  Compared to coiling, this device has the potential to fill a high percentage of aneurysm volume to promote rapid embolization and less recanalization.  The porous surface of the net enclosure, filled with soft compressible fill members, can engage the walls of the aneurysm to hold the filled structure in place and to inhibit or prevent it from prolapsing into the parent vessel.  There are no metal components poking or pinching the aneurysm walls which could potentially lead to rupture.  This approach can also preserve the option of subsequent clipping, if needed later.