Coating for improving bioactivity of stainless-steel bone lamella and bone nail

A biologically active, stainless steel technology, applied in coating, metal material coating process, vacuum evaporation plating, etc., can solve the problems of allergies, infection and loosening, and achieve inhibition of dissolution and exudation, smooth surface and good reliability Effect
CN102580169AInactive Publication Date: 2012-07-18HUAIYIN INSTITUTE OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAIYIN INSTITUTE OF TECHNOLOGY
Publication Date
2012-07-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a coating for improving bioactivity of a stainless-steel bone lamella and a bone nail. The Ti / TiB2 composite coating grows on the surface of a stainless-steel bone lamella and bone nail matrix (1), and the thickness of the Ti / TiB2 composite coating ranges from 500nm to 5mum; the inner layer of the composite coating, close to the bone lamella and bone nail matrix, is a pure-metal Ti layer (2) serving as a transition layer; and an external layer, namely a TiB2 layer (3), grows on the pure-metal Ti layer and serves as a function film layer. According to the invention, the pure-metal Ti layer grows on the surface of the bone lamella and bone nail matrix (1) by an ultrahigh vacuum magnetron sputtering method, and the TiB2 layer grows on the pure-metal Ti layer, so that the composite coating has better biocompatibility, frictional wear resistance and chemical stability, can effectively inhibit dissolution and seepage of toxic elements in stainless-steel matrix materials, and can reduce tissue reaction and aseptic loosening of the matrix, prolong the service life of the matrix and enhance the reliability of the matrix.
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Description

technical field

[0001] The invention relates to the field of implanted medical devices, in particular to a coating for improving the bioactivity of stainless steel bone plates and bone nails. Background technique

[0002] Most of the clinically used bone plates and bone screws are made of stainless steel, which is because stainless steel is cheap, has good mechanical properties, and has a certain degree of biological inertia. However, clinical experiments have found that when nickel-containing medical stainless steel is implanted into the human body (stainless steel generally contains 7-8% nickel), due to inevitable corrosion and wear, metal ions such as nickel ions will be released to adjacent tissues, which is easy to induce Allergy, infection and other tissue reactions. In addition, the enrichment of nickel ions in organisms can induce toxic effects, cell destruction and inflammation, and cause teratogenic and carcinogenic hazards to organisms. On the other hand, corros...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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