Micrograft for the treatment of intracranial aneurysms and method for use

Abstract

A device for occluding a vasculature of a patient including a micrograft having an absorbent polymeric structure with a lumen of transporting blood. The micrograft has a series of peaks and valleys formed by crimping. The occluding device is sufficiently small and flexible to be tracked on a guidewire and/or pushed through a microcatheter to a site within the vasculature of the patient. Delivery systems for delivering the micrografts are also disclosed.

1 - 20 . (canceled) 
     
     
         21 . A method of treating an intracranial aneurysm comprising the steps of:
 a) providing a polymeric occluding device having a lumen therein;   b) providing a delivery member supporting the occluding device;   c) inserting the delivery member with the occluding device into the intracranial aneurysm, the delivery member retaining the occluding device during delivery of the occluding device to the intracranial aneurysm;   d) leaving the occluding device in the intracranial aneurysm; and   e) delivering a blocking device into a vessel outside the intracranial aneurysm, the blocking device blocking exit of the occluding device from the intracranial aneurysm.   
     
     
         22 . The method of  claim 21 , further comprising the step of manipulating the delivery member to maneuver the occluding device within the intracranial aneurysm. 
     
     
         23 . The method of  claim 21 , wherein the occluding device has a permeable structure and blood enters the occluding device through a distal end of the lumen and through spaces in the permeable structure whereby the occluding device becomes saturated with blood and induces blood stagnation. 
     
     
         24 . The method of  claim 23 , wherein the occluding device has a preset curved shape and is delivered in a substantially linear configuration and moves to the curved shape when placed within the intracranial aneurysm. 
     
     
         25 . The method of  claim 21 , wherein the delivery member extends in a space between the blocking device and a wall of the vessel. 
     
     
         26 . The system of  claim 21 , wherein the blocking device is positioned on a delivery member proximal of the occluding device. 
     
     
         27 . The system of  claim 21 , wherein the delivery member extends through openings in the occluding device when the blocking device is in the vessel.