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A minimally invasive shape memory intervertebral fusion device

An intervertebral cage 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 less trauma.

Active Publication Date: 2018-11-23
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) described 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 shape memory intervertebral fusion device
  • A minimally invasive shape memory intervertebral fusion device
  • A minimally invasive shape memory intervertebral fusion device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Anterior spine fusion, under minimally invasive or open conditions, reaches the front of the spine, confirms the diseased vertebra, re-intervertebral discs, abrasion of bone, and adequate decompression. Take an undeformed one of the present invention of an appropriate size and place it in the intervertebral space. At this time, the memory deformed side beam 4 and the memory deformed front beam 5 gradually straighten in the body and become figure 2 In the middle shape, after confirming the position under the C-arm X-ray machine, artificial bone or autogenous bone is implanted through a special matching funnel.

Embodiment 2

[0036] Transpedicle and transvertebral disc oblique screw internal fixation combined with intervertebral fusion cage implantation, under endoscopic or open traditional surgical conditions, through the posterior surgical approach or through the transforaminal surgical approach, the intervertebral disc is removed, After grinding off the upper and lower endplates and fully decompressing, take an undeformed one of the present invention of a suitable size and place it in the intervertebral space. At this time, the memory deformed side beam 4 and the memory deformed front beam 5 gradually straighten in the body and become figure 2 In the middle shape, after confirming the position under the C-arm X-ray machine, artificial bone or autogenous bone is implanted through a special matching funnel.

Embodiment 3

[0038] Posterior decompression of the spine with four nails and two rods internal fixation combined with intervertebral fusion cage implantation, under endoscopic or open traditional surgical conditions, through the posterior surgical approach or through the transforaminal surgical approach to remove the intervertebral disc, After grinding off the upper and lower endplates and fully decompressing, take an undeformed one of the present invention of a suitable size and place it in the intervertebral space. At this time, the memory deformed side beam 4 and the memory deformed front beam 5 gradually straighten in the body and become figure 2 In the middle shape, after confirming the position under the C-arm X-ray machine, artificial bone or autogenous 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 invasively inserted shape memory intervertebral fusion cage 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, lumbar slippage and other diseases caused by spinal degeneration are in clinical practice Is very common. Lumbar interbody fusion has a definite curative effect and has been used for a hundred years. It is the main method to treat 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, and lumbar lateral approach. [0004] Anterior intervertebral fusion surgery enters the intervertebral space from the front, which can more effectively open and restore ...

Claims

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Application Information

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Patent Type & Authority Patents(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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