Biomedical material with silver-ion-bearing hydroxyapatite coating and preparation method thereof

Abstract

The invention relates to a biomedical material with a silver-ion-bearing hydroxyapatite coating, belonging to the field of the surface modification of biomedical materials. The biomedical material with the silver-ion-bearing hydroxyapatite coating solves the technical problems that the coating of the traditional bacteriostatic materials and solid powder raw materials is uneven because of density difference, the problem that the bacteriostatic materials are decomposed at high temperature because the plasma spraying temperature of the traditional powder is higher, as well as the defect that the structure of the of the traditional powder is compact, which is not beneficial for releasing bacteriostatic components. The invention provides the biomedical material for solving the technical problems. In the biomedical material, the silver-ion-bearing hydroxyapatite coating is prepared on at least one surface of a substrate material and is sprayed on the substrate material by liquid-phase plasma. The biomedical material effectively overcomes the defects of the traditional product, and the preparation method is simple and easy and has low cost.

Description

technical field [0001] The invention belongs to the field of surface modification of biomedical materials, and in particular relates to a biomedical material with silver ion-containing hydroxyapatite coating and a preparation method thereof. Background technique [0002] Biomedical materials are new high-tech materials used to repair or replace diseased tissues and organs of living organisms or enhance their functions. They generally refer to biomedical material implants that repair and replace teeth and bones. With the increase in the use of biomedical materials, the infection rate centered on biomedical materials has also increased significantly. Clinical applications have shown that inflammation around biomedical material implants has become an important reason for the decline in implant preservation rates. The hydroxyapatite coating provides a convenient place for bacteria to attach, and the trauma during the operation can easily cause microbial invasion and eventually l...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the bacteriostatic material cannot be evenly distributed in the existing antibacterial hydroxyapatite bioactive coating material due to the density difference between the bacteriostatic material and the solid powder raw material, and the existing powder The high temperature of plasma spraying leads to the pyrolysis of antibacterial materials and the surface of hydroxyapatite sprayed by powder plasma is very dense, which is not conducive to the release of antibacterial materials.

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