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A position-limiting and anti-loosening atlanto-tooth joint connector and its installation method

A connector and atlanto-tooth technology, which is applied in the field of limit-off anti-atlanto-tooth joint connector and its installation, can solve the problems affecting practical application and unstable function of atlanto-tooth joint connector, and achieve simple and easy installation and good performance. Application prospect, effect of preventing tripping

Active Publication Date: 2018-01-05
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in practical applications, the effect of using the fit between the boss body and the inner concave ring groove to prevent the tripping of the axial and atlas parts is not ideal, and tripping often occurs, resulting in the functional failure of the atlanto-tooth joint connector. Unstable, affecting practical application

Method used

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  • A position-limiting and anti-loosening atlanto-tooth joint connector and its installation method
  • A position-limiting and anti-loosening atlanto-tooth joint connector and its installation method
  • A position-limiting and anti-loosening atlanto-tooth joint connector and its installation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] In this embodiment, the three-dimensional structure diagram of the position-limiting and anti-disengagement atlanto-tooth joint connector is as follows: figure 1 As shown, it includes the axis component 1 and the atlas component 2.

[0053] Such as figure 2 As shown, the axis component 1 includes an axis connecting base 3 and two connecting plates 4 connected with the axis connecting base 3 . One end of the pivot joint 3 is formed with a protruding rotatable head body 5 , and the end surface of the head body is a spherical surface 6 .

[0054] The center axis of spherical symmetry of the head-body spherical surface 6 is taken as the reference axis, the direction parallel to the reference axis is taken as the axial direction, and the direction perpendicular to and connected with the reference axis is taken as the radial direction. The head body spherical surface 6 is formed with an inner concave ring groove 7 along a direction perpendicular to the axial direction.

...

Embodiment 2

[0072] In this embodiment, the structure of the position-limiting and anti-disengagement atlanto-tooth joint connector is basically the same as that of Embodiment 1, the difference is that the inner concave ring groove is an inner concave arc groove body, that is, each section passing through the reference shaft has the same shape. Indented arc. Correspondingly, each section of the limiting boss 13 passing through the reference axis is also a concave arc surface with the same shape, and after the limiting boss 13 is embedded with the inner concave ring groove 7, there is a tolerance between the two, The position-limiting boss 13 can be rotated left and right and forward and backward relative to the inner concave ring groove 7 . The left and right rotation refers to the reference axis as the axis of rotational symmetry, and the pivot component 1 can rotate left and right relative to the atlas component 2 . The forward and backward rotation refers to that the pivotal component ...

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Abstract

The invention provides a position-limiting and anti-loosening atlanto-tooth joint connector and an installation method thereof. The connector divides the atlas connecting platform into upper and lower parts, and the upper and lower parts are buckled by a card slot to form a hollow cavity with one end open, which is used for insertion and dynamic matching with the rotatable head body of the axis component. After the upper and lower parts are buckled, an anti-off baffle plate is set to further close the slot with the lower part of the atlas connection platform, so as to prevent the upper and lower parts of the atlas connection platform from tripping. Therefore, the atlanto-tooth joint connector can not only well control the up-and-down buckle limit and left-right rotation limit between the axis component and the atlas component, but also is simple and easy to install, and can effectively prevent the axis component from being detached from the atlas component. The buckle greatly improves the reliability of its practical application and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a position-limiting and anti-loosening atlanto-tooth joint connector and an installation method thereof. Background technique [0002] At present, decompression and fusion are mostly used in the medical treatment of atlantoaxial dislocation and instability. [0003] Simple decompression surgery cannot completely correct the atlantoaxial spine, and may even aggravate the instability of the atlantoaxial joint. Fusion is to stabilize the atlantoaxial joint through the fusion of the atlantoaxial spine, which directly leads to the obvious limitation of the rotational movement of the postoperative (head and neck) atlantoaxial joint of the patient, which will eventually lead to instability and degeneration of the unfused cervical spine. Therefore, decompression surgery and fusion surgery cannot eradicate the dislocation and instability of the atlantoaxial spine, and at the same...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/70A61F2/44
Inventor 王云峰陈希良胡勇
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI