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Composite-coating bone scaffold and preparation method thereof

A composite coating and bone technology, applied in the direction of coating, metal material coating process, superimposed layer plating, etc., can solve the problems of unconnected bone tissue binding, affecting bone healing, bone inflammation and other problems

Inactive Publication Date: 2017-08-18
NAXAU NEW MATERIALS CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metal materials have become the main component materials of bone scaffolds due to their good mechanical properties, but the existing bone scaffolds cannot be well combined with the connected bone tissue, and the metal materials in them will directly affect bone healing, and more seriously, will localized inflammatory response to the bone

Method used

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  • Composite-coating bone scaffold and preparation method thereof
  • Composite-coating bone scaffold and preparation method thereof

Examples

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preparation example Construction

[0018] figure 1 The preparation method of the composite coated skeletal scaffold 100 shown according to an embodiment of the present invention includes the following steps:

[0019] Provide bone support 10;

[0020] A nano-hard coating composed of AlCrN, CrAlN, CrN, AlTiN, TiAlN, TiAlCrN, TiSiN, TiSiAlN, TiAlWN or a mixture thereof is deposited on the surface 10a of the skeletal support 10 by a PVD process to form a PVD coating 12; and

[0021] The growth-promoting nanoparticles composed of calcium nanoparticles, phosphorus nanoparticles, zinc nanoparticles or a mixture thereof are introduced into a PVD process furnace, and a PVD coating modified by growth-promoting nanoparticles is formed on the surface 12a of the PVD coating 12 by a PVD process. Layer 14.

[0022] In one embodiment of the present invention, the step of forming the PVD coating 12 by using the PVD process includes: firstly passing argon gas with a purity of 99.999%, and cleaning the surface 10a of the skelet...

Embodiment 1

[0027] Provides skeletal support;

[0028] Feed into argon with a purity of 99.999% (i.e. high-purity argon), and under the condition of a bias voltage of 800-1000V, clean the surface of the skeletal support; then stop feeding the argon, and feed with a purity of 99.999% nitrogen ( That is, high-purity nitrogen), under the condition of bias voltage of 80-100V, open the CrAl target, arc current of 120A-200A, use PVD process to deposit AlCrN alloy on the surface of the cleaned bone bracket to form a PVD coating with a thickness of 3μm-6μm layer;

[0029] Next, continue to feed nitrogen with a purity of 99.999% (i.e. high-purity nitrogen), under the condition of a bias voltage of 80-100V, keep the CrAl target in the open state, and introduce calcium nanoparticles of 1nm-100nm at the same time, and the arc current is 120A -200A, using PVD process to deposit calcium nanoparticle modified PVD coating with a thickness of 3μm-6μm on the surface of PVD coating to form a composite coat...

Embodiment 2

[0031] Provides skeletal support;

[0032] Feed into argon with a purity of 99.999% (i.e. high-purity argon), and under the condition of a bias voltage of 800-1000V, clean the surface of the skeletal support; then stop feeding the argon, and feed with a purity of 99.999% nitrogen ( That is, high-purity nitrogen), under the condition of bias voltage of 80-100V, open the CrAl target, arc current of 120A-200A, use PVD process to deposit AlCrN alloy on the surface of the cleaned bone bracket to form a PVD coating with a thickness of 3μm-6μm layer;

[0033] Next, continue to pass in nitrogen gas with a purity of 99.999% (i.e. high-purity nitrogen gas), under the condition of a bias voltage of 80-100V, keep the CrAl target in the open state, and introduce phosphorus nanoparticles of 1nm-100nm at the same time, and the arc current is 120A -200A, using PVD process to deposit phosphorus nano-particle modified PVD coating with a thickness of 3μm-6μm on the surface of PVD coating to for...

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Abstract

The invention relates to a composite-coating bone scaffold and a preparation method thereof. The composite-coating bone scaffold comprises a bone scaffold body, wherein a physical vapor deposition PVD coating and a growth-promoting nano-particle modified PVD coating adhere to the surface of the bone scaffold body in sequence, and the PVD coatings are hard nano-coatings which are prepared from AlCrN, CrAlN, CrN, AlTiN, TiAlN, TiAlCrN, TiSiN, TiSiAlN and TiAlWn and mixtures of AlCrN, CrAlN, CrN, AlTiN, TiAlN, TiAlCrN, TiSiN, TiSiAlN and TiAlWn; and growth-promoting nano-particles are calcium nano-particles, phosphorus nano-particles and zinc nano-particles or mixtures of calcium nano-particles, phosphorus nano-particles and zinc nano-particles. The composite-coating bone scaffold is formed by sequentially depositing the PVD coating and the growth-promoting nano-particle modified PVD coating on the surface of the bone scaffold body, so that the hardness and abrasion resistance of the bone scaffold are improved, and growth of bone tissue connected with the bone scaffold and / or union of a wound connected with the bone scaffold is effectively promoted through the nano-particles in the bone scaffold.

Description

technical field [0001] The invention relates to the technical field of medical surgical instruments, in particular to a composite coated bone support and a preparation method thereof. Background technique [0002] In clinical treatment, skeletal diseases such as osteomyelitis can achieve the goal of eradicating the lesions from the root cause by replacing the diseased bones of the patient with skeletal scaffolds. Metal materials have become the main component materials of bone scaffolds due to their good mechanical properties, but the existing bone scaffolds cannot be well combined with the connected bone tissue, and the metal materials in them will directly affect bone healing, and more seriously, will lead to a localized inflammatory response in the bone. [0003] Therefore, the existing skeletal support needs to be improved urgently to enhance the therapeutic effect of the skeletal support. Contents of the invention [0004] One of the objectives of the present invent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/04C23C8/36C23C14/34C23C14/06
CPCC23C28/04C23C8/36C23C14/0036C23C14/06C23C14/0641
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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