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Preparation method of bio-ceramic coating titanium-wire sintering porous titanium artificial bone

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

Inactive Publication Date: 2010-11-24
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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  • Preparation method of bio-ceramic coating titanium-wire sintering porous titanium artificial bone
  • Preparation method of bio-ceramic coating titanium-wire sintering porous titanium artificial bone

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Experimental program
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Effect test

Embodiment 1

[0027] Such as figure 1As shown, the technological process 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, using three-dimensional weaving method to construct an orthogonal porous structure titanium grid, a diameter of 0.2 mm titanium metal fiber wires are woven according to the orthogonal structure. Firstly, the titanium wires are woven horizontally into a uniform and parallel horizontal arrangement structure in a circular area with a diameter of 20 mm, and the distance between each arrangement is 1 mm. The wires shuttle and weave back and forth from the parallel lines just woven, and form a set of uniform and parallel arrangement structures in the longitudinal direction, with the same spacing of 1mm. The parallel arrangement structures of the horizontal and vertical titanium wires are vertically interlaced Together, on the basis of...

Embodiment 2

[0030] The three-dimensional weaving method is used to construct an orthogonal porous structure titanium grid, and a titanium metal fiber wire with a diameter of 0.6mm is woven according to the orthogonal structure. , 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 molding, and the loading time is maintained for 10 minutes, so that the titanium metal f...

Embodiment 3

[0033] 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 invention discloses a preparation method of a bio-ceramic coating titanium-wire sintering porous titanium artificial bone, belonging to the biomedical engineering field. In the invention, a three-dimensional weaving method is utilized, a titanium metal fiber wire is constructed into a controllable structure model, a random structure model and a bionic structure model which can stimulate the bone trabecula and principal stress line of a human bone, and then is prepared into the porous titanium artificial bone through prepressing molding and vacuum sintering, after that, a sol-gel method is utilized to manufacture a gradient coating or a complex coating on the surface of the porous titanium artificial bone, so that the gradient coating transiting from titanium dioxide to bio-ceramics or the bio-ceramics-titanium dioxide complex coating is formed on the surface of the porous titanium artificial bone to obtain the bio-ceramic coating titanium-wire sintering porous titanium artificial bone. The preparation method not only can protect the titanium metal skeleton and prevent titanium ions from dissociating to enter a human body, but also can ensure that the titanium metal skeleton the surface of which is coated with the bio-ceramics has the biological characteristics, therefore, the bio-ceramic coating titanium-wire sintering porous titanium artificial bone can be applied to repairing clinical segmental defect of long bones.

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): A61F2/28A61L27/32A61L27/30A61L27/06A61L27/56
Inventor 李祥王成焘
Owner SHANGHAI JIAO TONG UNIV
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