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Integrated-type internal set screw for vertebral column

A fixation screw and fusion-type technology, applied in the direction of internal fixator, fixator, internal bone synthesis, etc., can solve the problems of increasing the risk of failure of the internal fixation system, and achieve the effect of preventing loosening, regression and dislocation

Inactive Publication Date: 2012-05-02
BEIJING AKEC MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface of the bone thread of the existing bone screw is smooth, easy to screw in and out, which is beneficial to the operation, but it also increases the risk of loosening and withdrawing the screw later, resulting in failure of the internal fixation system

Method used

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  • Integrated-type internal set screw for vertebral column
  • Integrated-type internal set screw for vertebral column
  • Integrated-type internal set screw for vertebral column

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0029] Such as figure 1 The fusion-type spinal internal fixation screw of the present invention shown includes a nut segment 20 and an osseointegration segment 10 connected to the nut segment 20, and is characterized in that the osseointegration segment 10 includes a solid part 12 and is fixedly arranged on the solid part The pore fusion part 11 on the surface of 12 has a pore structure on the pore fusion part 11, and the pore fusion part 11 fits with the bone of the spine.

[0030] The fusion type spinal internal fixation screw of the present invention proposes to design the pore fusion part 11 of the osseointegration segment 10 that fits the bone as a pore structure, and the pore structure is implanted in the fusion type spinal internal fixation screw. After entering the bone, it is beneficial for the bone cells to grow into the pore structure to form t...

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PUM

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Abstract

The invention provides an integrated-type internal set screw for vertebral column, comprising a screw cap section and a synosteosis section connected therewith, wherein the synosteosis section comprises an entity part and an interspace integration part fixedly arranged on the surface of the entity part; and the interspace integration part is provided with an interspace structure for sticking with the sclerotin of the vertebral column. The integrated-type internal set screw for vertebral column provided by the invention has the following features that the interspace integration part of the synosteosis section is designed as an interspace structure; such interspace structure is beneficial for the osteocyte growing inside the interspace structure after the integrated-type internal set screws of the vertebral column are implanted into the sclerotin so as to form an integration between the sclerotin and the screws. The finally formed bone integration state can permanently and effectively prevent the integrated-type internal set screws of the vertebral column being loosened, degenerated and dislocated.

Description

technical field [0001] The invention relates to the field of spinal internal fixation, in particular to a fusion type spinal internal fixation screw. Background technique [0002] The spine is the central axis of the human body, the upper part is connected to the occipital bone at the bottom of the skull, and the lower part reaches the end of the coccyx. The spine is connected by the vertebrae, sacrum and coccyx with intervertebral discs, intervertebral joints and many ligaments. It is the activity center of the trunk and the hub of mechanical transmission. It is responsible for supporting body weight, shock absorption, protecting the central nervous system, and providing forward and backward extension of the upper part of the body Flexion, lateral bending, twisting and other motor functions. Due to the changes in modern human lifestyles and the accelerated pace of life, the load on the spine and surrounding tissues has increased, the chance of injury has greatly increased,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/86
CPCA61B17/86A61B17/7032A61B17/70A61B17/864A61B17/869A61B17/8625A61B17/866A61F2/30767
Inventor 刘忠军
Owner BEIJING AKEC MEDICAL