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Minimally invasive embedded shape memory interbody fusion cage

An intervertebral fusion device and memory technology, applied in the direction of spinal implants, etc., can solve the problems of bone leakage and small bone graft area in the middle, and achieve the effects of fast recovery, improved fusion rate, and fewer complications

Active Publication Date: 2016-02-10
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.
[0012] At present, the memory alloy technology can achieve the effect of micro-implantation and stretching in the body. The previous published patent (publication number CN1449725A, patent number: 03113393.2) describes a minimally invasive shape memory alloy intervertebral body that is 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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  • Minimally invasive embedded shape memory interbody fusion cage
  • Minimally invasive embedded shape memory interbody fusion cage
  • Minimally invasive embedded shape memory interbody fusion cage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 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

[0036] 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

[0038] 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 invention relates to a minimally invasive embedded shape memory interbody fusion cage used for spine surgery. The minimally invasive embedded shape memory interbody fusion cage is of a frame-type hollow structure and is composed of multiple stand column shafts, front beams, side beams, memory deformation side beams, memory deformation front beams, multiple shaft peripheral rings and an open window. The front beams, the side beams, the memory deformation side beams and the memory deformation front beams are connected with the shaft peripheral rings through clamping groove structures and raised head structures, and the shaft peripheral rings of different layers are arranged on the corresponding stand column shafts in a sleeving mode, wherein the memory deformation side beams and the memory deformation front beams are made of medical titanium-nickel memory alloy with a shape memory function. The minimally invasive embedded shape memory interbody fusion cage can enter an intervertebral space through an existing tiny channel and has the advantages of being small in wound, less in pain, rapid in recovery, few in complication and the like; after the minimally invasive embedded shape memory interbody fusion cage is spread, the contact area of the interbody fusion cage and an upper end plate and a lower end plate of a vertebral body can be increased, more sclerotin can be implanted, and the fusion rate is increased.

Description

technical field [0001] The invention relates to a minimally invasive implanted shape memory intervertebral fusion device used in the medical field and spinal surgery. Background technique [0002] 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. [0003] Interbody fusion includes anterior interbody fusion, posterior interbody fusion, transforaminal lumbar interbody fusion, lumbar lateral approach, etc. [0004] Anterior intervertebral fusion enters the intervertebral space from the front, which can more effectively expand and restore...

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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