Metal Industries Research & Development Centre

Wei-Jen Shih

Wei-Ching Wang

Wei-Te Chen

Tzyy-Ker Sue

Yen-Nien Chen

Yu-Ting Lyu

Wei-The Chen

Fu-Shan Wang

For-Son Wang

Meng-Xiu Wu

An intervertebral implant is a porous structure formed of a plurality of metal balls, and the intervertebral implant includes a bone support area and a bone growth area. The bone support area and the bone growth area each have a plurality of connecting holes, and a porosity of the bone support area is smaller than that of the bone growth area.

Intervertebral implant

An intervertebral implant, particularly an intervertebral implant comprising local degradable hydroxyl apatite/metal block and based on a support mounting model of porous hydroxyl apatite with metal powders held for sintering and molding, guides osseous tissues to grow in porous metal and is steadily merged in upper and lower bones when the implanted hydroxyl apatite is gradually degraded in a certain period.

A method for treating a surface of a metal implant includes a polishing step, a grafting step and a surface modifying step. The polishing step includes polishing a surface of a metal implant to remove an uneven, natural oxide layer on the surface of the metal implant and to generate an even oxide layer on the surface of the metal implant. The grafting step includes grafting an anti-adhesion macromolecule on an outer face of the even oxide layer. A covalent bond between the anti-adhesion macromolecule and oxygen atoms on the outer face of the even oxide layer is formed. Thus, a macromolecular anti-adhesion layer on the outer face of the even oxide layer can be created. The surface modifying step includes changing a property of the surface of the metal implant with the macromolecular anti-adhesion layer by high temperature and high pressure, providing the metal implant with high hydrophilicity.

Method for processing a surface of a metal implant and the metal implant produced by the method

An interbody cage includes a substrate having a plurality of curve slits, with each of the curve slits having a plurality of sections. A plurality of deformable ribs is formed, with each deformable rib between any adjacent two of the curve slits and having a first end and a second end. The first and second ends of each deformable rib respectively connect with two opposite lateral bars of the substrate, and a plurality of folds is formed on the plurality of deformable ribs in places adapted to be bent. In use, any adjacent two of the deformable ribs are capable of being bent to depart from each other to define a filling room.

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Kaohsiung, Taiwan

Wei-Jen Shih