Material for aneurysm curing

Abstract

It is an object of the present invention to provide a polymer material, the histocompatibility of which has been improved by irradiation of ion beam, which prevents an aneurysm having a risk of rupture from actually rupturing. The present invention provides a material for treating aneurysms, which is composed of a polymer material containing carbon as a constitutional element, and which is produced by modifying at least a portion of the surface thereof by ion bombardment.

1 . A material for treating aneurysms, which is composed of a polymer material containing carbon as a constitutional element, and which is produced by modifying at least a portion of the surface thereof by ion bombardment.  
     
     
         2 . The material for treating aneurysms according to  claim 1  wherein the polymer material containing carbon as a constitutional element is expanded polytetrafluoroethylene (ePTFE), polylactic acid, silicone, or silk.  
     
     
         3 . The material for treating aneurysms according to  claim 1  wherein modification by ion bombardment is carried out by ion implantation using an ion beam with an acceleration energy that is between 1 keV and 2 MeV.  
     
     
         4 . The material for treating aneurysms according to  claim 1  wherein modification by ion bombardment is carried out by ion implantation within a dose volume φ such that 1×10 12 ≦φ<1×10 17  ions/cm 2 .  
     
     
         5 . A method for producing a material for treating aneurysms, which is characterized in that ions are implanted into at least a portion of the surface of a polymer material containing carbon as a constitutional element, within a dose volume φ such that 1×10 12 ≦φ<1×10 17  ions/cm 2 .  
     
     
         6 . The production method according to  claim 5  wherein the polymer material containing carbon as a constitutional element is expanded polytetrafluoroethylene (ePTFE), polylactic acid, silicone, or silk.  
     
     
         7 . The material for treating aneurysms according to  claim 2  wherein modification by ion bombardment is carried out by ion implantation using an ion beam with an acceleration energy that is between 1 keV and 2 MeV.  
     
     
         8 . The material for treating aneurysms according to  claim 2  wherein modification by ion bombardment is carried out by ion implantation within a dose volume φ such that 1×10 12 ≦φ<1×10 17  ions/cm 2 .  
     
     
         9 . The material for treating aneurysms according to  claim 3  wherein modification by ion bombardment is carried out by ion implantation within a dose volume φ such that 1×10 12 ≦φ<1×10 17  ions/cm 2 .  
     
     
         10 . The material for treating aneurysms according to  claim 7  wherein modification by ion bombardment is carried out by ion implantation within a dose volume φ such that 1×10 12 ≦φ<1×10 17  ions/cm 2 .