Patent ID: 7790080

Claim:
A method for forming a bioartificial guidance conduit, comprising: providing a substrate with a photoresist layer; performing a lithographic process on said photoresist layer to form a mold that comprises at least one first pattern having a flat-bottom cave and at least one second pattern having a plurality of pillar-shaped structures extending from said flat-bottom cave, wherein the depth of said flat-bottom cave is substantially equal to the height of said pillar-shaped structure; performing a mold-filling process to fill said mold with a biocompatible material, so as to form at least one disc, wherein the main body of said disc is formed by said first pattern, and at least one penetrating hole of said disc is formed by said second pattern; performing a mold-releasing process to take out at least one said disc; repeating said mold-filling process and said mold-releasing process to produce a plurality of said discs; and performing a coaxially stacking process to stack said plurality of discs, and said bioartificial guidance conduit is then formed, wherein at least one said penetrating hole on adjacent said plurality of discs connects with each other, so as to run through said bioartificial guidance conduit, wherein the decomposing rate of said disc located at the middle of said bioartificial guidance conduit being slower than the decomposing rate of said disc located at the two ends of said bioartificial guidance conduit.