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Mortise and tenon joint type thoracic and lumbar intervertebral fixator

A fixator, mortise and tenon technology, applied in the field of medical equipment, to achieve good stability and reliability

Pending Publication Date: 2017-09-15
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the prolongation of the follow-up period, complications such as intervertebral fusion cage displacement, subsidence, stress shielding, bone resorption in adjacent parts, and delayed inflammatory response have been reported from time to time.

Method used

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  • Mortise and tenon joint type thoracic and lumbar intervertebral fixator
  • Mortise and tenon joint type thoracic and lumbar intervertebral fixator
  • Mortise and tenon joint type thoracic and lumbar intervertebral fixator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like Figure 1 to Figure 4 As shown, the mortise and tenon type thoracolumbar intervertebral fixator includes an intervertebral fixator body 1 for inserting into the intervertebral space of the thoracic or lumbar spine, and a vertical wing-shaped part 2 fixedly connected to one end of the intervertebral fixator body 1 , the vertical wing-shaped part 2 includes a connection part 2-1 and a tenon 2-2, the connection part 2-1 is used for fixed connection with the body part 1 of the intervertebral fixator, and the connection part 2-1 extends along the length direction of the human spine toward the intervertebral Tenons 2-2 extend from both sides of the fixture body 1 respectively. After adopting this structure, the intervertebral fixator body 1 is combined with the vertebral body in a mortise-and-mortise manner, and the vertical wing-shaped part 2 is used as the tenon 2-2, and the bone knife chisels the side edges of the upper and lower vertebral bodies of the thoracic verte...

Embodiment 2

[0040] Mortise and tenon type thoracolumbar intervertebral fixer, other structures are the same as in Embodiment 1, and will not be described again, the difference is that one end of the intervertebral fixator body 1 is provided with a groove, and the connecting part 2-1 is located in the groove , the connecting portion 2-1 abuts against the bottom surface of the groove. The separate setting is convenient for mold opening and processing, and the manufacturing process is simple.

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Abstract

The invention relates to a mortise and tenon joint type thoracic and lumbar intervertebral fixator. The fixator comprises an intervertebral fixator portion which is used for inserting in the intervertebral space of a thoracic vertebra or a lumbar vertebra; and a vertical wing-like part which is fixedly connected to one end of the intervertebral fixator portion; the vertical wing-like part comprises a connecting part and a tenon, wherein the connecting part is used for fixedly connecting to the intervertebral fixator portion and the connecting part extends along the length of the spine of a human body to extend to the two sides of the body of the intervertebral fixator portion respectively. Compared with thoracic and lumbar intervertebral fixing devices in the prior art, the device is suitable for intervertebral fusion fixation of lesion segments in thoracic anterior decompression surgery and lumbar posterior decompression surgery; an upper and lower vertebral bodies are extruded to the intervertebral fixator portion by the mortise and tenon joint fixation between the tenon of the vertical wing-like part and the upper and lower vertebral slots so that a firm and stable integral body is formed by the upper and lower vertebral bodies and the intervertebral fixator portion, which has good stability and reliability and can limit the depth of the fixator and prevent the fixator from backing off and provide favorable conditions for the final fusion.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a mortise and tenon type thoracolumbar intervertebral fixator. Background technique [0002] Mortise and tenon is a concave-convex connection method used on two components. The protruding part is called tenon (or tenon); the concave part is called tenon (or tenon, tenon and groove), and the tenon and tenon bite together to play a connecting role. This is the main structure of ancient Chinese buildings, furniture and other wooden instruments. The mortise and tenon structure is a combination of tenon and tenon. It is an ingenious combination of more and less, high and low, long and short parts, which can effectively limit the twisting of components in all directions. The most basic mortise and tenon structure is composed of two components, the mortise of one is inserted into the mortise of the other, so that the two components are connected and fixed. [0003] Mortise and teno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44A61B17/70
CPCA61B17/7061A61B17/7074A61B17/7094A61F2/4455A61B2017/564A61B2017/7073
Inventor 潘锐佘国荣洪丰董军林宏生林永新王国普靳松
Owner JINAN UNIVERSITY
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