Method of fabricating a porous orthopedic implant

摘要

A tissue scaffold fabricated from bioinert fiber forms a rigid three-dimensional porous matrix having a bioinert composition. Porosity in the form of interconnected pore space is provided by the space between the bioinert fiber in the porous matrix. Strength of the porous matrix is provided by bioinert fiber fused and bonded into the rigid three-dimensional matrix having a specific pore size and pore size distribution. The tissue scaffold supports tissue in-growth to provide osteoconductivity as a tissue scaffold, used for the repair of damaged and/or diseased bone tissue.

主权项

1. A method of fabricating a porous orthopedic implant comprising:
providing bulk fiber; providing a bonding agent; mixing the bulk fiber and the bonding agent with volatile materials including a binder, a pore former, and a liquid to provide a batch material; forming the batch material into a shaped object; and curing shaped object by removing the volatile materials and bonding the bulk fiber using the bonding agent to provide the orthopedic implant; wherein a raw material characteristic is selected to provide an elastic modulus of the orthopedic implant that is the same as natural bone with a compressive strength that exceeds 4 MPa and a porosity greater than 50%.