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Pore structure part of porous titanium intervertebral fusion cage

An intervertebral cage and pore structure technology, which are applied to the parts of porous titanium intervertebral cages and the field of vertebral implants, can solve the problems of inability to meet long-term clinical requirements, lack of fatigue resistance, easy to break, etc., and achieve good results. Elasticity and toughness, high strength, the effect of ensuring structural strength

Active Publication Date: 2017-05-10
CHANGZHOU WASTON MEDICAL APPLIANCE CO LTD
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  • Description
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  • Application Information

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Problems solved by technology

Although this patent solves the problem of matching the elastic modulus of the fusion cage with the natural bone tissue and bone ingrowth, this single porous structure (that is, the porous structure of the fusion cage) lacks fatigue resistance. It is easy to break under the action and cannot meet the long-term clinical needs

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  • Pore structure part of porous titanium intervertebral fusion cage
  • Pore structure part of porous titanium intervertebral fusion cage
  • Pore structure part of porous titanium intervertebral fusion cage

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Embodiment 1

[0025] (Example 1, the porous structure part of the porous titanium intervertebral fusion device)

[0026] See Figure 5 and Figure 6 The porous structure part of the porous titanium intervertebral cage of this embodiment is a part of the cage that is integrally printed with titanium alloy materials by a 3D printer, and the void structure part 2 is composed of a combination of void units in a regular tetrahedral structure ; Each interstitial unit is composed of 4 rectangular parallelepiped titanium columns 21 with the same length, that is, the respective ends of the 4 titanium columns 21 are connected together, and the angle between each titanium column 21 is 109 degree 28 minutes, and the other ends of the four titanium columns 21 are connected to the other end of one titanium column corresponding to an adjacent void unit, the angle between the two connected titanium columns is also 109 degrees 28 minutes , that is, the connection mode between each titanium column 21 of th...

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Abstract

The invention discloses a pore structure part of a porous titanium intervertebral fusion cage. The pore structure part is a part of a fusion cage printing forming titanium alloy material integrally through a 3D printer, and is used for leading new bone ingrowth. The pore structure part is composed of pore units of a regular tetrahedron structure; respective one ends of four titanium columns of each pore unit are connected together, the inclined angle between each titanium column and another is 109 degree 28 cent, meanwhile the other end of each titanium column is connected to the other end of one titanium column of a corresponding adjacent pore unit, and the inclined angle between the titanium columns is 109 degree 28 cent as well, that is the connection method of each titanium column of the pore structure part and the adjacent titanium column is arranged according to a method similar to the arrangement method of the chemical bond between each carbon atom and an adjacent carbon atom in diamond. The provided pore structure part of a porous titanium intervertebral fusion cage is good in intensity, and has certain elasticity and a certain intervertebral healing effect when in use.

Description

technical field [0001] The invention relates to an implant for vertebrae, belongs to the field of intervertebral fusion and internal fixation, and in particular relates to a part of a porous titanium intervertebral fusion device. Background technique [0002] Lumbar disc herniation and cervical spondylosis and other symptoms of degenerative disc disease is a common and frequently-occurring disease in modern society, seriously affecting the quality of life of patients. Spinal fusion is one of the most widely used techniques in spinal surgery. It mainly promotes spinal fusion by establishing immediate spinal stability and implant osteogenesis, osteoinduction, and osteoconduction. At present, intervertebral fusion has become the main method for the treatment of lumbar instability, lumbar spinal stenosis, degenerative spondylolisthesis, degenerative scoliosis, pseudarthrosis and degenerative disc disease. The fusion device in the prior art is mainly divided into two types accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
CPCA61F2/30767A61F2/4455A61F2002/30199A61F2002/30593A61F2002/3093A61F2002/30985A61F2310/00023
Inventor 吴忆峰李翔陈文涛韦冬孙平阳
Owner CHANGZHOU WASTON MEDICAL APPLIANCE CO LTD
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