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A double-slope intervertebral fusion cage adapted to oblique screws through the pedicle and intervertebral disc

An intervertebral cage, trans-disc technology, applied in the direction of fixator, internal fixator, internal bone synthesis, etc., can solve the problems of fixation, the occupation of the intervertebral cage, etc., to increase the contact area, good biomechanical performance, improve The effect of fusion rate

Active Publication Date: 2019-03-12
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, the current intervertebral fusion cage is basically a cuboid structure. If the intervertebral fusion cage is inserted from the rear, the intervertebral fusion cage will occupy the intervertebral space and be blocked by the intervertebral fusion cage. screw internal fixation

Method used

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  • A double-slope intervertebral fusion cage adapted to oblique screws through the pedicle and intervertebral disc
  • A double-slope intervertebral fusion cage adapted to oblique screws through the pedicle and intervertebral disc
  • A double-slope intervertebral fusion cage adapted to oblique screws through the pedicle and intervertebral disc

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] For patients with spinal degenerative diseases and other diseases that require posterior intervertebral fusion, the intervertebral disc is removed through the posterior approach or through the transforaminal approach under endoscopy or open traditional surgery. After the upper and lower endplates are removed and the decompression is sufficient, at the same time, artificial bone or autogenous bone is stuffed in the large hole 2 of the present invention.

[0019] At this time, if it is the right posterior approach, the oblique screw through the pedicle and intervertebral disc on the left side can be inserted first, and then, the present invention can be held through the holding hole 4 with the supporting holding instrument, and the present invention can be inserted through the surgical approach. , through intraoperative X-ray fluoroscopy, observe the position of the X-ray-opaque marking needle 6 on the perspective view, judge the position of the present invention, adjust t...

Embodiment 2

[0022] Patients with spinal degenerative diseases and diseases caused by other reasons need to undergo intervertebral fusion with posterior transpedicular intervertebral disc oblique screws combined with lateral approach to insert intervertebral fusion cages, endoscopic or open traditional surgical conditions Next, under the condition of lateral approach, the intervertebral disc is removed, the upper and lower endplates are ground, and the decompression is sufficient. Choose the present invention of appropriate specification size, fill artificial bone or autogenous bone in large hole 2. Then, hold the present invention through the holding hole 4 with the supporting holding instrument, insert the present invention through the side surgical approach, and observe the position of the X-ray-opaque marking needle 6 on the perspective view through intraoperative X-ray fluoroscopy, and judge The position of the present invention, adjust the kyphotic body 8 of the present invention to ...

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Abstract

The invention relates to a double-skewed slot intervertebral fusion device adapted for cervical pedicle cervical disc oblique screw for spinal column surgery. An upper surface, a lower surface, a left side surface, a right side surface, a rear protruding body, a front cambered surface, a left inclined groove and a right inclined groove form a hollow main body. The left inclined groove and the right inclined groove are set at the left side and the right side of the rear protruding body respectively; the upper surface and the lower surface are provided with a large aperture respectively; the right side surface or the left side surface are provided with a handing aperture respectively; the height of the rear protruding body is about 1-5 mm higher than the left side surface, the right side surface and the front cambered surface so as to make the shapes of the upper surface and the lower surface similar to the shapes of an upper endplate and a lower endplate of a vertebral body. The device is made by material that is suitable for medical science. According to the invention, the device can be put into a gap between the vertebras through a rear operation or a side operation; at the same time, the contact area of an upper final plate and a lower final plate of the intervertebral fusion device is greatly increased by the rear protruding body.

Description

technical field [0001] The invention relates to a double chute intervertebral fusion device used in spinal surgery and adapted to oblique screws through the pedicle and intervertebral disc. Background technique [0002] 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 pain, faster recovery, and fewer complications. It is the future spinal cord fixation technique. One of the development directions of surgery. 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 rates of intervertebral fusion cages. In ord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/44A61B17/70
Inventor 吴爱悯池永龙黄哲宇倪文飞王向阳徐华梓
Owner THE SECOND HOSPITAL AFFILIATED TO WENZHOU MEDICAL COLLEGE