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Atlantoaxial joint prosthesis

A joint prosthesis and atlantoaxial technology, applied in the field of prosthesis, can solve problems such as the limitation of neck rotation of patients

Pending Publication Date: 2022-03-08
北京理贝尔生物工程研究所有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide an atlantoaxial joint prosthesis to solve the problem in the related art that the fusion and fixation of the atlas and axis make the rotation of the patient's neck restricted

Method used

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0035] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include...

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Abstract

The invention provides an atlantoaxial joint prosthesis, which is arranged between an atlas and an axis, and comprises a first joint prosthesis arranged on the atlas, a second joint prosthesis arranged on the atlas, and a third joint prosthesis arranged on the atlas, the second joint prosthesis is arranged on the axis; the guide structure comprises a sliding groove seat and a sliding block, an arc-shaped sliding groove is formed in the sliding groove seat, the sliding block is located in the arc-shaped sliding groove, one of the sliding groove seat and the sliding block is arranged on the first joint prosthesis, and the other one of the sliding groove seat and the sliding block is arranged on the second joint prosthesis. According to the technical scheme, the problem that rotation of the neck of a patient is limited due to fusion fixation of the atlas and the axis in the related technology can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of prosthesis, in particular to an atlantoaxial joint prosthesis. Background technique [0002] As the most important motor unit in the upper part of the cervical spine, the atlantoaxial spine is often caused by pathological changes such as atlantoaxial instability, dislocation, and bone destruction due to trauma, deformity, rheumatoid disease, and infection, which in turn causes joint dysfunction and spinal cord dysfunction. Pressure can cause limb weakness, limited neck movement, inability to defecate and other symptoms, and severe cases can cause paralysis or life-threatening. [0003] The atlantoaxial joint includes the first and second joints of the cervical spine and the ligamentous structures between them. This cervical joint is unique in that it has no intervertebral discs and its main articular surfaces are the left and right facet joints. The maximum axial range of rotation of the atlantoaxial jo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/44
CPCA61F2/447A61F2002/30518
Inventor 郭宇辰王圣林李健
Owner 北京理贝尔生物工程研究所有限公司
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