Linearly arranged artificial porous bone structure

A technology of linear arrangement and porous bone, applied in the field of artificial bone, can solve the problems that it is difficult to ensure the shape of the structure, and the porous titanium block structure is difficult to control and uncontrollable, and achieves considerable clinical medical prospects, good initial stability, and extensive The effect of bone ingrowth

Inactive Publication Date: 2016-06-08
广东健齿生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The porous titanium artificial structure bone obtained in this way has been tested, but the porous titanium block structure is difficult to control or even uncontrollable, and it is difficult to ensure the shape of the structure, resulting in low porosity, dead units, and stress

Method used

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  • Linearly arranged artificial porous bone structure
  • Linearly arranged artificial porous bone structure
  • Linearly arranged artificial porous bone structure

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Experimental program
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Embodiment 1

[0022] Such as figure 2 with 3 As shown, the artificial porous bone structure includes a shell 2 and a porous body 1 in the shell 2. The porous body 1 is formed by a plurality of grid units 11 linearly connected and arranged, and the grid units 11 are hollow and truncated. The thickness of the frame of the grid unit 11 is 220 μm, the pore size of the grid unit 11 is 1000 μm, and the porosity of the porous body 1 is 79.71%. The shell 2 is a cylindrical thickened entity. The grid units 11 are highly interconnected, and the porous body 1 presents a spatial grid shape. It is made of stainless steel as raw material, and is integrally formed by 3D laser selective melting.

Embodiment 2

[0024] The artificial porous bone structure includes a shell and a porous body in the shell. The porous body is formed by linearly connecting and arranging a plurality of grid units. The grid unit is a hollow truncated octahedron. The frame of the grid unit The thickness is 290 μm, the pore size of the grid unit is 750 μm, and the porosity of the porous body is 76.24%. The shell is a curved thickened entity seamlessly tangent to the outer contour of the human bone. The grid units are highly interconnected, and the porous body presents a spatial grid shape. Using titanium alloy as raw material, it is formed into one piece by 3D laser selective melting.

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Abstract

The invention discloses a linearly arranged artificial porous bone structure, comprising a shell and a porous body in the shell, wherein the porous body is formed by linear connection and arrangement of multiple grid cells, each grid cell is of a hollow truncated octahedron, the thickness of a frame of each grid cell is 200 to 300mu m, the aperture of each grid cell is 500 to 1250mu m, and the porosity of the porous body is 75 percent to 80 percent. According to the linearly arranged artificial porous bone structure, the porous body prepared by utilizing 3D (three dimensional) selective laser melting integral molding is high in porosity and high in strength, a highly interconnected spatial through-hole structure can provide extensive bone ingrowth, the high friction coefficient can provide good initial stability of a transplant, and a considerable clinical medical prospect is achieved.

Description

Technical field [0001] The invention relates to the technical field of artificial bones, in particular to a linearly arranged artificial porous bone structure. Background technique [0002] Due to various adverse reasons, more and more people are plagued by fractures, bone defects and even amputations. In addition, the rapid development of the field of biomedical devices has resulted in the emergence of technologies for repairing prosthetic bone tissue, and it has attracted more and more attention. At present, some related bone repair technologies have been applied in clinical medicine or medical experiments. In 1885, Macewan first applied the method of autologous bone transplantation to repair the skull. This method was later promoted. Although the autologous bone transplantation technique does not need to consider the biocompatibility and rejection of the graft and the host, it can be better. Healing, but after all, there is a shortage of autologous bone sources, which cannot ...

Claims

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Application Information

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IPC IPC(8): A61L27/06A61L27/04A61L27/56B33Y10/00B33Y80/00
CPCA61L27/06A61L27/047A61L27/56A61L2430/02B33Y10/00B33Y80/00
Inventor 张春雨陈贤帅颜瑜王亚玲林志生
Owner 广东健齿生物科技有限公司
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