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Atlanto-odontoid joint connector realizing limiting purpose and mounting method thereof

An installation method and connector technology, applied in the direction of spinal implants, etc., can solve the problems of restricting the movement of the occipital bone and cervical spine joints, and achieve the effects of improving reliability, simple and easy installation, and improving the reliability of practical applications

Pending Publication Date: 2017-10-03
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

The fixer locks the occipital bone and cervical spine in a fixed way, limiting the movement of the occipital bone and cervical spine joints

Method used

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  • Atlanto-odontoid joint connector realizing limiting purpose and mounting method thereof
  • Atlanto-odontoid joint connector realizing limiting purpose and mounting method thereof
  • Atlanto-odontoid joint connector realizing limiting purpose and mounting method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] In this embodiment, the three-dimensional structure diagram of the limited atlanto-tooth joint connector is as follows figure 1 As shown, it includes the axis component 1 and the atlas component 2.

[0035] Such as figure 2 As shown, the axis component 1 includes an axis connecting base 8 and two side plates 9 fixedly connected with the axis connecting base 8 left and right. The pivot joint 8 is a hollow cavity with one end open, and a protruding rotatable body 5 and two limiting blocks 10 are formed on the opposite surface of the open end. The rotatable body 5 has a smooth cylindrical structure, and its end face 6 has a planar structure. The two limiting blocks 10 are respectively elongated.

[0036] Atlas component 2 includes such as image 3 The shown atlas connecting platform 3, two side plates 4 fixedly connected with the atlas connecting platform 3 left and right, and as Figure 4 The rotating bushing 13 is shown. Such as image 3 As shown, the atlas conne...

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Abstract

The invention provides an atlanto-odontoid joint connector realizing the limiting purpose. For the connector, a protruding rotatable head body and a protruding limiting block are arranged on a dentata component, a hollow axial through hole in insertion with and movable match with the rotatable head body is arranged on an atlas component, and a concave annular groove in embedding with and movable match with the limiting block is arranged on the atlas component; when the rotatable head body rotates around the axial direction of the through hole, the limiting block can perform limiting rotation in the concave annular groove around the axial direction of the through hole, so that the rotation of the rotatable head body is limited. Compared with the prior art, the atlanto-odontoid joint connector is simple in structure, the rotation limiting between the dentata component and the atlas component is realized, so that the excessive rotation between the dentata component and the atlas component is effectively prevented, thus the actual application reliability of the atlanto-odontoid joint connector is improved, and the application prospect is good.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a position-limiting 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 time cannot re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
CPCA61F2/44A61F2002/448
Inventor 陈希良熊胜肖江剑胡勇
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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