Surface modified porous metal implant and preparation method thereof

A porous metal and surface modification technology, applied in the field of medical devices, can solve problems such as uneven thickness of micro-arc oxidation coating, achieve the effect of reducing the gap in electric field strength and optimizing electric parameters
CN107059093BActive Publication Date: 2019-01-08BEIJING AKEC MEDICAL
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING AKEC MEDICAL
Publication Date
2019-01-08

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Abstract

The present invention provides a surface-modified porous metal implant and a preparation method thereof. The porous metal implant has a structural hole, and the preparation method comprises a step of micro-arc oxidation by using a plurality of power sources for power supply. The power sources comprise a first power source and a second power source. The step of micro-arc oxidation comprises connecting a first anode connector of the porous metal implant with an anode of the first power source; arranging a connection cathode in the structural hole and connecting the connection cathode with a cathode of the first power source; connecting a second anode connector of the porous metal implant with an anode of the second power source; connecting an electrolytic bath with a cathode of the second power source; and immersing the porous metal implant into a bath solution and using the first power source and the second power source for power supply to carry out micro-arc oxidation treatment. The first power source and the second power source are controlled in a mutually independent manner. With power supply by the multiple power sources, an electric field intensity difference and an electric field energy intensity difference between the inner wall and the outer wall of the structural hole can be reduced, thereby obtaining an in-situ growth film with a good quality.
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Description

technical field

[0001] The invention relates to the field of medical devices, in particular to a surface-modified porous metal implant and a preparation method thereof. Background technique

[0002] Titanium or titanium alloys are currently the most widely used bone tissue substitute materials in clinical practice due to their excellent comprehensive mechanical properties, corrosion resistance, and biocompatibility. Surrounded by a layer of cystic fibrous membrane, it is difficult to form a firm combination with the host bone in a short period of time. It is only a mechanical embedded osseointegration with the bone, rather than a chemical osseointegration, which is prone to stress concentration and implantation In addition, titanium or titanium alloy has low surface hardness, poor wear resistance, and unsatisfactory biocompatibility, which limits its application to a certain extent.

[0003] The method of introducing micropores on the surface of titanium or titanium alloy t...

Claims

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