Interbody fusion cage
An intervertebral cage and trans-disc technology, which is applied in the field of intervertebral cages and can solve the problems of inability to place the cage, unable to achieve the mechanical properties and fusion rate of the cage, etc.
Inactive Publication Date: 2015-06-03
池永龙 +2
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Problems solved by technology
However, two screws are placed obliquely from the posterior edge of the lower vertebral body through the intervertebral space into the middle of the upper vertebral body. The common intervertebral fusion cage is blocked by the screws in the intervertebral space and cannot be inserted, while autologous bone insertion alone cannot achieve Mechanical properties and fusion rate of intervertebral fusion cage
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[0012] The present invention is suitable for oblique screw internal fixation through the pedicle and intervertebral disc, and is inserted through a lateral endoscopic channel. After the posterior transpedicular intervertebral disc oblique screw internal fixation was implanted, the nucleus pulposus was bitten off and the upper and lower lamina were ground through the lateral endoscopic approach. The cancellous bone is inserted through the upper hole 4 and the side hole 5 of the body of the intervertebral fusion device, and the supporting equipment holds the side hole 5, and reaches the intervertebral space through the side channel. Under perspective, the opening on one side of the oblique groove 3 is aligned with the oblique screw and enters the intervertebral space. Under the fluoroscopy of the C-arm X-ray machine, use the X-ray-opaque metal marking pin 7 as a reference to confirm the position of the intervertebral fusion cage until the adjustment is satisfactory.
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The invention relates to an interbody fusion cage used for a spine surgery and fit with a trans-vertebral-arch-pedicle trans-intervertebral-disc slant screw internal fixation operation. A slant groove from rear bottom to front top is formed in a body of the interbody fusion cage. The portion, in front of the slant groove, of the body is of a hollow structure. An opening is formed in one side of the slant groove. A whole aerial view of the interbody fusion cage is of a 6-shaped structure. The interbody fusion cage is fit with the trans-vertebral-arch-pedicle trans-intervertebral-disc slant screw internal fixation operation. A clamping protrusion higher than a slope plane is arranged in the middle of a slope below the interbody fusion cage, and the interbody fusion cage can be prevented from shifting. Peripheral metal signing needles which X-rays can not penetrate through can have the effect of accurate location. The interbody fusion cage solves the problem that a common interbody fusion cage can not be fit with the new trans-vertebral-arch-pedicle trans-intervertebral-disc slant screw internal fixation operation, and meets the clinic requirements of the trans-vertebral-arch-pedicle trans-intervertebral-disc slant screw internal fixation operation.
Description
technical field [0001] The invention relates to an intervertebral fusion device used in spinal surgery and suitable for oblique screw internal fixation through the pedicle and intervertebral disc. Background technique [0002] Traditional lumbar fusion uses a posterior four-nail and two-rod system for internal fixation, and a common intervertebral fusion device is implanted between the vertebrae to achieve the purpose of intervertebral fusion. There are many disadvantages, such as fear of surgery and long-term chronic pain after surgery. Although there are many improved minimally invasive methods, the internal fixation based on the posterior four-nail and two-rod system requires at least four screws to be inserted into the incision, and the cost is relatively expensive. In recent years, a new internal fixation with oblique screws through the pedicle and intervertebral disc has been reported. This new internal fixation technology has many advantages such as less trauma, less...
Claims
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IPC IPC(8): A61F2/44A61B17/70
CPCA61F2/44A61F2002/30001
Inventor 吴爱悯池永龙倪文飞
Owner 池永龙