Method for obtaining graded pore structure in scaffolds for tissues and bone, and scaffolds with graded pore structure for tissue and bone

摘要

As a supporter (scafford) for one or more of the tissue and bone growth, the support is more than one polymer are prepared from the polymers of the support and having a different biodegradation rate is disclosed. The first polymer of the two or more polymer is leached by the solvent , any other polymer is inert to the solvent , has a lower dissolution rate than in the solvent . And the support is a high porosity at the surface of the support , in the deep part of the support has a low porosity of the classified Chemical porosity . ;