Controlled randomized porous structures and methods for making same

Abstract

Improved randomized porous structures and methods of manufacturing such porous structures are disclosed. The scaffold of the porous structures are formed from by dividing the space between a plurality of spatial coordinates of a defined volume, where the plurality of spatial coordinates have been moved in a random direction and a random finite distance according to a predetermined randomization limit.

1 . A porous structure comprising a plurality of struts, each strut comprises:
 a first end;   a second end; and   a continuous elongated body between said first and second ends, said body having a thickness and a length; and a plurality of nodes, each node comprises an intersection of at least two struts, wherein said plurality of struts and nodes formed from a model created by dividing the space between a plurality of spatial coordinates of a defined volume, said plurality of spatial coordinates having been moved in a random direction and a random finite distance according to a predetermined randomization limit.   
     
     
         2 . The porous structure of  claim 1 , wherein said plurality of spatial coordinates comprise a plurality of outer spatial coordinates placed along the boundary of said defined volume and a plurality of inner spatial coordinates placed in the interior of said defined volume. 
     
     
         3 . The porous structure of  claim 1 , wherein said defined volume of randomized spatial coordinates comprises a plurality of tiles, where each tile comprises a three dimensional space having a plurality of spatial coordinates randomized according to a predetermined randomization limit. 
     
     
         4 . The porous structure of  claim 3 , wherein said plurality of tiles are substantially identical to one another. 
     
     
         5 . The porous structure of  claim 3 , wherein a portion of said plurality of tiles are joined together substantially seamlessly. 
     
     
         6 . The porous structure of  claim 1 , wherein the predetermined randomization limit of one or more spatial coordinates is based at least upon the position of one other spatial coordinate. 
     
     
         7 . The porous structure of  claim 1 , wherein the predetermined randomization limit is applied to one or more spatial coordinates, where said predetermined randomization limit restricts the random movement of said one or more spatial coordinates to within a defined space surrounding said one or more spatial coordinates.