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Prepn process of titanium sintering porous titanium artificial bone with bioceramic coating

A technology of ceramic coating and porous titanium is applied in the field of preparation in the field of biomedical engineering technology, which can solve problems such as insurmountable cracks, and achieve the effects of good biological activity and high mechanical strength.

Inactive Publication Date: 2007-08-22
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method of using a pore-forming agent can obtain a high porosity, it still cannot overcome the defect that cracks are easily generated in a fatigue environment.

Method used

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  • Prepn process of titanium sintering porous titanium artificial bone with bioceramic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Figure 1 is a process flow chart of preparing porous titanium artificial bone by sintering titanium fiber three-dimensional weaving technology and preparing bioceramic coating on the surface of porous titanium artificial bone. A titanium metal fiber wire with a diameter of 0.2mm is braided according to the orthogonal structure. Firstly, the titanium wire is braided into a uniform and parallel horizontal arrangement structure in a circular area with a diameter of 15mm, and the distance between each arrangement is 1mm. , and then weave the titanium wires back and forth from the parallel lines just woven in the longitudinal direction, and form a set of uniform and parallel arrangement structures in the longitudinal direction, with the same spacing of 1mm, and the horizontal and vertical titanium wires are arranged in parallel The structure is vertically interlaced with each other. On the basis of this layer, weave the second layer according to the same method and steps unti...

Embodiment 2

[0021] The three-dimensional weaving method is used to construct an orthogonal porous structure titanium grid. A titanium metal fiber wire with a diameter of 0.6mm is woven according to the orthogonal structure. First, the titanium wire is woven horizontally in a circular area with a diameter of 20mm , a parallel arrangement structure, the distance between each arrangement is 0.5mm, and then the titanium wire is shuttled back and forth from the parallel line just woven along the longitudinal direction, forming a group of uniform and parallel arrangement structures in the longitudinal direction. The spacing is also 0.5mm, and the horizontal and vertical titanium wires are arranged in parallel and interlaced vertically. On the basis of this layer, weave the second layer according to the same method and steps until a porous titanium wire with a height of 30mm is formed. The wire mesh frame structure is then placed in the mold, and a load of 200MPa is applied for pre-compression mo...

Embodiment 3

[0024] The three-dimensional weaving method is used to construct an orthogonal porous structure titanium grid. A titanium metal fiber wire with a diameter of 0.4mm is woven according to the orthogonal structure. First, the titanium wire is woven horizontally in a circular area with a diameter of 10mm , parallel arrangement structure, the distance between each arrangement is 1.5mm, and then weave the titanium wire back and forth from the parallel lines just woven along the longitudinal direction, and form a group of uniform and parallel arrangement structures in the longitudinal direction. The spacing is also 1.5mm, and the horizontal and vertical titanium wires are arranged in parallel and vertically interlaced with each other. On the basis of this layer, weave the second layer according to the same method and steps until a porous titanium with a height of 20mm is formed. The wire mesh frame structure is then placed in the mold, and a load of 80MPa is applied for pre-compressio...

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Abstract

The preparation process of sintered porous titanium artificial bone with bioceramic coating belongs to the field of biomedicine engineering technology. The preparation process includes stereo weaving of titanium metal fiber to form bionic structure model simulating human body's bone trabecula, pre-pressing formation and vacuum sintering to prepare porous titanium artificial bone, sol-gel process to form gradient and composite coating on the surface of the porous titanium artificial bone. The present invention can protect titanium metal skeleton, avoid titanium ion dissociation and make the artificial bone possess biological characteristic, and may be used in the clinical repair of large bone defect.

Description

technical field [0001] The invention relates to a preparation method in the technical field of biomedical engineering, in particular to a preparation method of bioceramic coated titanium wire sintered porous titanium artificial bone. Background technique [0002] Due to their good mechanical properties and good biocompatibility, metal materials have been widely used in clinical medicine to reinforce, repair and replace certain tissues and organs of the human body. Compared with other metal materials, titanium and its alloys have better properties and have become one of the most promising medical metal materials. However, metal materials are biologically inert materials, and there are various side effects after implantation in the human body. How to further improve the biocompatibility and corrosion resistance of metal implant materials, enhance their binding force with living tissues, and improve the safety of use are still the main problems in the promotion and application...

Claims

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Application Information

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IPC IPC(8): A61L27/42A61L27/06A61L27/12A61L31/12
Inventor 王成焘李祥
Owner SHANGHAI JIAO TONG UNIV
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