Patent ID: 8518432

Claim:
A production method for a block-shaped scaffold for tissue engineering, the method comprising, approximate-uniformly mixing a particle-shaped material having a particle diameter of 100 to 2000 μm with a solution in which a bioabsorbable polymer is dissolved with an organic solvent, where the particle-shaped material is not dissolved with said organic solvent but dissolved in a liquid in which the bioabsorbable polymer is not dissolved, freezing the mixture, drying it to remove said organic solvent, and producing thereby a polymer material containing the particle-shaped material and having a small hole structure wherein a hole diameter is 5 to 50 μm; pulverizing said produced polymer material, removing said particle-shaped material by dissolving with a liquid in which the bioabsorbable polymer is not dissolved, passing through a sieve, and producing thereby a bioabsorbable granular porous material having a particle diameter of 100 to 3000 μm; and taking said bioabsorbable granular porous material into a mold, pressing and heating the bioabsorbable granular porous material, producing thereby the block-shaped scaffold for tissue engineering having ununiform and continuous holes occupying 20 to 80% in a cross-section area in a three-dimensional network structure having the small hole structure with the hole diameter of 5 to 50 μm, having an elastic coefficient of 0.1 to 2.5 MPa, and a volume change of 95 to 105% when dipping in water for 24 hours.