Nickel-titanium alloy medical equipment with surface coating and coating preparation method

A technology for medical devices and nickel-titanium alloys, which is applied to the field of nickel-titanium alloy medical devices with surface coating and the preparation of surface coatings of nickel-titanium alloy medical devices, can solve the problem of the decline of the mechanical properties of orthodontic wires and the increase of the temperature of the base material. , loss of superelastic properties, etc., to achieve the effect of reducing intake, improving binding force, and reducing stress difference
CN108690967AActive Publication Date: 2018-10-23CHINA MOREFOUND TECH LTD SHENZHEN
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA MOREFOUND TECH LTD SHENZHEN
Publication Date
2018-10-23

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Abstract

The invention discloses a method for preparing a surface coating of nickel-titanium alloy medical equipment. The method comprises the following steps that (1) impulse negative bias is loaded, and titanium ions are injected, so that a titanium transition layer is formed; and (2) under the condition that impulse negative bias and titanium injection are kept, nitrogen is pumped in with flow being instep increase from 0 to 20 sccm, a titanium-titanium nitride gradient transition layer is formed, and finally a pure titanium nitride layer is formed. The invention further discloses the nickel-titanium alloy medical equipment with the surface coating. The surface coating comprises the titanium transition layer, the titanium-titanium nitride gradient transition layer and the pure titanium nitridelayer from inside to outside; and content of titanium nitride is evenly increased in a gradient mode in the titanium-titanium nitride gradient transition layer.
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Description

technical field

[0001] The invention belongs to the technical field of biomedical materials, and in particular relates to a method for preparing a surface coating of a nickel-titanium alloy medical device and the nickel-titanium alloy medical device with the surface coating. Background technique

[0002] Malocclusion is an oral disease with a high incidence rate in all countries in the world. This kind of developmental deformity is the deformity of dentition, jaw and craniofacial caused by congenital genetic factors or acquired environmental factors, such as diseases, bad oral habits, and tooth replacement disorders, during the growth and development of children. It not only affects the appearance of the face, but also affects the function of the mouth and jaw. In recent years, with the improvement of people's living standards, not only children, but also more and more adults are undergoing orthodontic treatment.

[0003] In orthodontic treatment, orthodontic wire is a kin...

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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