Complex vaso-occlusive coils

Abstract

A vaso-occlusive device includes a member that forms a series of at least four successive loops, each loop of the series having a different axis than, and lying in a separate plane from, any other loop of the series. Each plane in which a loop lies forms an angle greater than 30 degrees with any immediately proceeding, and any immediately succeeding, plane.

1 . A vaso-occlusive device, comprising:
 a member that forms a series of at least four successive loops, each loop of the series having a different axis than, and lying in a separate plane from, any other loop of the series, including at least two non-successive loops lying in respective planes which are substantially parallel, each of the four successive loops comprising a helical form having 1.5 to 3.5 rotations about its axis, and each plane forming an angle greater than 30 degrees with any immediately preceding and any immediately succeeding plane.   
     
     
         2 . The vaso-occlusive device of  claim 1 , each plane forming an angle between 45 and 90 degrees with the immediately preceding and the immediately succeeding plane. 
     
     
         3 . The vaso-occlusive device of  claim 1 , each plane perpendicular to the immediately preceding and the immediately succeeding plane. 
     
     
         4 . The vaso-occlusive device of  claim 1 , wherein at least one of the loops is wound in a clockwise direction, and at least one of the loops is wound in a counterclockwise direction. 
     
     
         5 . The vaso-occlusive device of  claim 1 , at least one loop comprising an elliptical or oval form. 
     
     
         6 . The vaso-occlusive device of  claim 1 , at least one of the loops having a different geometric form than the other loops. 
     
     
         7 . The vaso-occlusive device of  claim 1 , a distal most loop of the series having a diameter smaller than a diameter of an immediately preceding loop. 
     
     
         8 . A vaso-occlusive coil having an elongate helical primary shape, the primary shape defining a primary axis, the primary shape being wound into a secondary shape comprising:
 a series of at least four successive loops, each loop of the series having a different axis than, and lying in a separate plane from, any other loop of the series, each plane forming an angle greater than 30 degrees with any immediately preceding and any immediately succeeding plane, and at least one of the loops having a different geometric form than the other loops.   
     
     
         9 . The vaso-occlusive device of  claim 8 , each plane forming an angle between 45 and 90 degrees with the immediately preceding and the immediately succeeding plane. 
     
     
         10 . The vaso-occlusive device of  claim 8 , each plane perpendicular to the immediately preceding and the immediately succeeding plane. 
     
     
         11 . The vaso-occlusive device of  claim 8 , wherein at least one of the loops is wound in a clockwise direction, and at least one of the loops is wound in a counterclockwise direction. 
     
     
         12 . The vaso-occlusive device of  claim 8 , at least one loop comprising an elliptical or oval form. 
     
     
         13 . The vaso-occlusive device of  claim 8 , a distal most loop of the series having a diameter smaller than a diameter of an immediately preceding loop. 
     
     
         14 . A vaso-occlusive coil having an elongate helical primary shape, the primary shape defining a primary axis, the primary shape being wound into a secondary shape comprising:
 a series of at least four successive loops, each loop of the series having a different axis than, and lying in a separate plane from, any other loop of the series, each plane forming an angle greater than 30 degrees with any immediately preceding and any immediately succeeding plane, wherein at least one of the loops is wound in a clockwise direction, and at least one of the loops is wound in a counterclockwise direction.   
     
     
         15 . The vaso-occlusive device of  claim 14 , each plane forming an angle between 45 and 90 degrees with the immediately preceding and the immediately succeeding plane. 
     
     
         16 . The vaso-occlusive device of  claim 14 , each plane perpendicular to the immediately preceding and the immediately succeeding plane. 
     
     
         17 . The vaso-occlusive device of  claim 14 , at least one loop comprising an elliptical form or an oval form. 
     
     
         18 . The vaso-occlusive device of  claim 14 , a distal most loop of the series having a diameter smaller than a diameter of an immediately preceding loop.