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Intervertebral cage having flexibility

An intervertebral cage and flexibility technology, applied in the field of intervertebral cages, can solve problems such as the collapse of the cage, and achieve the effect of maintaining the height of the intervertebral disc, easy operation and good stability

Inactive Publication Date: 2012-05-23
朴 庆佑
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if doctors use Peek modular fusion cages for patients with osteopenia or osteoporosis, after several years after surgery, they still cannot get rid of the problem of fusion cage collapse

Method used

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Embodiment Construction

[0047] The purpose, features and advantages of the present invention will be clarified by describing the present invention in detail with reference to the accompanying drawings. Hereinafter, preferred embodiments will be described in detail with reference to the drawings.

[0048] According to the intervertebral fusion cage having flexibility of the present invention, the impact applied to the spine is relieved and the intervertebral disc space is sufficiently ensured to control intervertebral movement instead of the normal intervertebral disc.

[0049] image 3 It is a cross-sectional view of a flexible intervertebral fusion device showing the structure of the first embodiment of the present invention, Figure 4 yes image 3 An illustration of a modified example.

[0050] The structures proposed in the first to third embodiments of the present invention are applicable to lumbar and cervical vertebrae.

[0051] As shown in the figure, the fusion device according to the fir...

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PUM

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Abstract

An intervertebral cage having flexibility is provided wherein a housing itself has a plate spring form having proper elasticity. The housing can have a shape memory characteristic to obtain a modulus of elasticity suitable for differing spinal loads according to each patient, thereby absorbing a shock applied to a spine. A distance between disks is restored by the intervertebral cage to sufficiently secure a disc height, thereby relieving spinal nerve stress. The intervertebral cage may be converted from a simple fusion application into a functional cage adequate for a physiological biomechanics. The flexible intervertebral cage includes a housing having a closed sectional surface with an empty hollow therein. The housing itself has proper elasticity so that it absorbs a load by a stress applied in a vertical direction of a spine by a dynamic motion due to an upright walk of a patient to serve as a normal disk.

Description

technical field [0001] The present invention relates to an artificial intervertebral disc for treating intervertebral discs, and more particularly to a flexible intervertebral fusion cage that relieves shock applied to the spine after surgery and controls intervertebral motion while maintaining sagittal balance of the spine (spinal sagittal balance) while fully maintaining the intervertebral disc space to eliminate compression on the spinal nerves. Background technique [0002] In general, normal intervertebral discs function to protect the spinal nerves by cushioning shock applied to the spine and limiting intervertebral motion. [0003] Intervertebral disc disease, one of the common diseases, includes lumbar disc herniation, in which the intervertebral disc herniates due to a severe impact on the lower back, and degenerative disc disease, in which the intervertebral disc between the vertebrae ages and compresses peripheral nerve tissue. [0004] If the degenerative change...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44A61B17/70
CPCA61F2/4465A61F2002/30092A61F2002/30571A61F2002/30573A61F2002/30019A61F2002/30484A61F2002/30228A61F2002/30845A61F2002/30131A61F2002/30113A61F2002/30289A61F2002/30904A61F2/446A61F2002/30125A61F2002/30227A61F2/442A61F2310/00023A61F2002/30563A61F2002/30616A61F2002/30579A61F2002/30841
Inventor 朴庆佑
Owner 朴 庆佑
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