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A minimally invasive insertion shape memory interbody fusion cage

一种椎间融合器、记忆的技术，应用在脊柱植入物等方向，能够解决中间植骨面积小、骨质渗漏等问题，达到提高融合率、恢复快、创伤小的效果

Active Publication Date: 2019-01-08
THE SECOND HOSPITAL AFFILIATED TO WENZHOU MEDICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it adopts the mechanical rotation and compression method, and the bone graft area in the middle is small, and it only spreads out in the shape of flower buds.
[0013] At present, the memory alloy technology can achieve the function of micro-implantation and stretching in the body. The previous published patent (publication number CN1449725A, patent number: 03113393.2) describes a minimally invasive intervertebral body of shape memory alloy stretched by rolling technology. Fusion, this technology utilizes the shape memory function of the memory alloy, but after being stretched, the upper and lower contact with the upper and lower endplates, there is no blocking fence around, and the bone is easy to leak to the surrounding

Method used

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  • A minimally invasive insertion shape memory interbody fusion cage
  • A minimally invasive insertion shape memory interbody fusion cage
  • A minimally invasive insertion shape memory interbody fusion cage

Examples

Experimental program
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Effect test

Embodiment 1

[0035] Anterior spinal fusion, under minimally invasive or open conditions, reaches the front of the spine, confirms the diseased vertebra, repeats the intervertebral disc, grinds away the bone, and fully decompresses. Take an undeformed one of the present invention with a suitable size and put it into the intervertebral space. At this time, the memory deformation side beam 4 and the memory deformation main beam 5 will gradually straighten in the body and become figure 2 In the medium shape, after the position is confirmed under the C-arm X-ray machine, artificial bone or autologous bone is implanted through a special matching funnel.

Embodiment 2

[0037] Transpedicular intervertebral disc oblique screw internal fixation combined with intervertebral fusion cage implantation, under endoscopic or open traditional surgical conditions, the intervertebral disc is removed through the posterior surgical approach or through the transforaminal surgical approach, Grinding the upper and lower endplates and decompressing sufficiently, take an undeformed one of the present invention of an appropriate size and put it into the intervertebral space. figure 2 In the medium shape, after the position is confirmed under the C-arm X-ray machine, artificial bone or autologous bone is implanted through a special matching funnel.

Embodiment 3

[0039] Posterior decompression of the spine with four screws and two rods internal fixation combined with intervertebral cage implantation, under endoscopic or open traditional surgical conditions, the intervertebral disc is removed through the posterior surgical approach or through the transforaminal surgical approach, Grinding the upper and lower endplates and decompressing sufficiently, take an undeformed one of the present invention of an appropriate size and put it into the intervertebral space. figure 2 In the medium shape, after the position is confirmed under the C-arm X-ray machine, artificial bone or autologous bone is implanted through a special matching funnel.

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Abstract

The present application relates to a minimally invasive implantation shape memory interbody fusion cage for spinal surgery, which is a component application of 201410358699.9. A minimally invasive shape memory interbody fusion cage is a hollow frame structure, which is compose of a plurality of column axes, a positive beam, a side beam, a memory deform side beam, a memory deforming positive beam,a plurality of axial peripheral rings and an open window. Both ends of the positive beam, the side beam, the memory deformation side beam and the memory deformation side beam are connected with each other through a clamping slot structure and a convex head structure and a peripheral ring of the shaft, and the peripheral rings of different layers correspond to each other and are sleeved on the shaft of the upright column. Among them, the memory deformation side beam and the memory deformation front beam are made of medical titanium-nickel memory alloy with shape memory function. The invention can enter the intervertebral space through the current tiny channel, not only has the advantages of small trauma, light pain, quick recovery, fewer complications, and the like, but also can increase the contact area with the upper and lower end plates of the vertebral body after being distracted, more bone is implanted, and the fusion rate is improved.

Description

[0001] The patent application of the present invention is a divisional application, the original application number is: 201410358699.9, the application date is: July 27, 2014, and the invention name is: a minimally invasive implanted shape memory intervertebral fusion device. technical field [0002] The invention relates to a minimally invasive implanted shape memory intervertebral fusion device used in the medical field and spinal surgery. Background technique [0003] Cervical disc herniation, cervical spinal stenosis, cervical segmental instability, thoracic disc herniation, lumbar disc herniation, lumbar spinal stenosis, lumbar segmental instability, spondylolisthesis and other diseases caused by degenerative changes in the clinic is very common. Lumbar interbody fusion has a definite curative effect and has been used for a hundred years. It is the main means of treating such diseases and one of the most widely used surgical methods in spinal surgery. [0004] Interbod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
Inventor 吴爱悯池永龙陈栋林仲可倪文飞王向阳徐华梓
Owner THE SECOND HOSPITAL AFFILIATED TO WENZHOU MEDICAL COLLEGE
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