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Composite coating bone pin and preparing method thereof

A composite coating and spicule technology, applied in coating, metal material coating process, superimposed layer plating, etc., can solve the problem of patients suffering from bacterial infection

Inactive Publication Date: 2017-07-14
NAXAU NEW MATERIALS CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, the medical devices currently used clinically, ranging from scalpels and bone drills to small bone needles and anesthesia needles, cannot meet the antibacterial requirements and cause patients to suffer from bacterial infections when they come into direct contact with the human body

Method used

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  • Composite coating bone pin and preparing method thereof
  • Composite coating bone pin and preparing method thereof
  • Composite coating bone pin and preparing method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0021] figure 1 The method for preparing the composite coated spicule 100 according to an embodiment of the present invention includes the following steps:

[0022] Providing a bone spicule 10; performing ion nitriding treatment on the bone spicule 10 to form a nitrided layer 16 on the surface 10a of the bone spicule 10;

[0023] A PVD process is used to deposit a nano hard coating including AlCrN, CrAlN, CrN, TiN, AlTiN, TiAlN, TiAlCrN, TiSiN, TiSiAlN, TiAlWN or a mixture thereof on the surface 16a of the nitriding layer 16 to form the PVD coating 12; and

[0024] The antibacterial nanoparticles are introduced into the PVD process furnace, and the PVD coating 14 modified with antibacterial nanoparticles is formed on the surface 12a of the PVD coating 12 by using the PVD process.

[0025] In an embodiment of the present invention, the antibacterial nanoparticles in the PVD coating 14 modified by antibacterial nanoparticles include silver nanoparticles, copper nanoparticles or a mixture...

Embodiment 1

[0033] Provide a bone spicule; perform ion nitriding treatment on the bone spicule 10 in a nitrogen environment at 400° C. to form a nitriding layer 16 on the surface 10a of the bone spicule 10, with a thickness of 0.25 mm;

[0034] Pass in argon with a purity of 99.999% (ie, high-purity argon), and clean the surface 16a of the nitriding layer 16 under the condition of a bias voltage of 800-1000V; then stop passing argon with a purity of 99.999% Nitrogen (ie high-purity nitrogen), under the conditions of a bias voltage of 80-100V, turn on the Ti target, the arc current is 120A-200A, the surface 16a of the nitrided layer 16 after cleaning is deposited using the PVD process to form a thickness of TiN alloy 3-6μm PVD coating;

[0035] Then, continue to pass in nitrogen with a purity of 99.999% (that is, high-purity nitrogen), keep the CrAl target open under the condition of a bias voltage of 80-100V, and at the same time introduce 1-100nm silver nanoparticles with an arc current of 12...

Embodiment 2

[0037] Provide a bone spicule; perform ion nitriding treatment on the bone spicule 10 in a nitrogen environment at 400°C to form a nitriding layer 16 on the surface 10a of the bone spicule 10, and the thickness of the nitriding layer is 0.3 mm;

[0038] Pass in argon with a purity of 99.999% (ie, high-purity argon), and clean the surface 16a of the nitriding layer 16 under the condition of a bias voltage of 800-1000V; then stop passing argon with a purity of 99.999% Nitrogen (ie high-purity nitrogen), under the conditions of a bias voltage of 80-100V, turn on the Ti target, the arc current is 120A-200A, the surface 16a of the nitrided layer 16 after cleaning is deposited using the PVD process to form a thickness of TiN alloy 3-6μm PVD coating;

[0039] Then, continue to pass in nitrogen with a purity of 99.999% (that is, high-purity nitrogen), keep the CrAl target open under the condition of a bias voltage of 80-100V, and at the same time introduce copper nanoparticles of 1-100nm w...

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Abstract

The invention relates to a composite coating bone pin and a preparing method thereof. The composite coating bone pin is provided in the embodiment and comprises a bone pin body. A nitriding layer, a PVD coating and an anti-microbial nano particle modified PVD coating are sequentially attached to the surface of the bone pin body, wherein the PVD coating is a nano hard coating comprising AlCrN, CrAlN, CrN, TiN, AlTiN, TiAlN, TiAlCrN, TiSiN, TiSiAlN and TiAlWN or the mixture of the AlCrN, the CrAlN, the CrN, the TiN, the AlTiN, the TiAlN, the TiAlCrN, the TiSiN, the TiSiAlN and the TiAlWN. The composite coating bone pin and the preparing method thereof are provided in the embodiment, and the nitriding layer, the PVD coating and the anti-microbial nano particle modified PVD coating are sequentially deposited on the surface of the bone pin body to form the composite coating bone pin; on one hand, the hardness and abrasion resistance of the bone pin body are enhanced; and on the other hand, anti-microbial nano particles in the anti-microbial nano particle modified PVD coating can effectively resist bacteria, and the risk that patients infect with the bacteria is reduced.

Description

Technical field [0001] The invention relates to the technical field of medical surgical instruments, in particular to a composite coated bone pin and a preparation method thereof. Background technique [0002] According to the relevant data in the "Practical Manual of Prevention and Treatment of Nosocomial Infections" issued by the World Health Organization, more than 14 million people worldwide suffer from nosocomial infections every day, and 60% of bacterial infections are related to clinically used medical devices. In other words, the medical instruments currently in clinical use range from scalpels and bone drills to as small as bone needles and anesthesia needles. Because they cannot meet the antibacterial requirements, patients suffer bacterial infections when they come into direct contact with the human body. [0003] Therefore, the existing medical devices urgently need to be improved in order to improve the antibacterial effect of the medical devices and reduce the risk of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/04C23C8/36C23C14/34C23C14/06
CPCC23C28/042C23C8/36C23C14/0641C23C14/3464
Inventor 黄世伟沈学忠袁安素朱国朝温振伟
Owner NAXAU NEW MATERIALS CORP
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