Atlantoaxial dislocation reduction and internal fixation device

A fixation device, atlantoaxial technology, applied in the field of atlantoaxial dislocation reduction and internal fixation device, can solve the problems of large trauma, high difficulty, high risk, etc., to improve connection stability, reduce surgical trauma, avoid additional damage or Effects of related complications

Active Publication Date: 2015-04-08
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide an internal fixation device for atlantoaxial dislocation reduction, which solves

Method used

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  • Atlantoaxial dislocation reduction and internal fixation device
  • Atlantoaxial dislocation reduction and internal fixation device
  • Atlantoaxial dislocation reduction and internal fixation device

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with accompanying drawing.

[0044] Such as Figure 1 to Figure 5 As shown, the "internal fixation device for atlantoaxial dislocation reduction" of the present invention includes a connecting rod 1, a lateral mass screw 2, a lamina occlusal screw 3, a spring 4, and a set screw 5. At the corner of the connecting rod 1, there are four lateral mass screws 2, and two lateral mass screws 2 are respectively arranged on both sides of the connecting rod 1. On rod 1, in order to ensure the strength and safety of the “reduction internal fixation device for atlantoaxial dislocation”, each part of the internal fixation device for atlantoaxial dislocation reduction is made of titanium alloy.

[0045] The lamina clenching nail 3 includes occlusal forceps 31 and pulling sleeve 32, occlusal forceps 31 is composed of occlusal forceps upper piece 311 and occlusal forceps lower piece 312, and the left ends of occlusal ...

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Abstract

The invention discloses an atlantoaxial dislocation reduction and internal fixation device, belongs to the field of medical instruments and aims at solving the problems of large risk, high difficulty and heavy wound of atlantoaxial dislocation treatment by use of the existing atlantoaxial internal fixation technology. The atlantoaxial dislocation reduction and internal fixation device comprises a connecting rod, lateral mass screws and vertebral plate occlusion nails; the connecting rod is U-shaped; the lateral mass screws are arranged on the two sides of the connecting rod, respectively to form a fixed support; two vertebral plate occlusion nails are mounted on the connecting rod by use of fastening screws, respectively; each vertebral plate occlusion nail comprises occlusion tweezers and a lifting sleeve; one end of the occlusion tweezers is hooked on an atlantoaxial back arch, while the other end of the occlusion tweezers is connected with the lifting sleeve; the other end of the lifting sleeve is provided with a U-shaped opening in which a spring is arranged; the connecting rod is located above the spring in the U-shaped opening and fixed by use of the fastening screw. The atlantoaxial dislocation reduction and internal fixation device is used for performing lifting reduction and fixation on the atlantoaxial back arch by tightening the fastening screws without skull traction, and is simple and safe to operate; only a minimal operative wound is formed.

Description

technical field [0001] The invention relates to a medical device, in particular to an internal fixation device for atlantoaxial dislocation reduction. Background technique [0002] Cervical trauma often leads to fracture of the odontoid process of the axis or rupture of the transverse ligament of the atlas, resulting in atlantoaxial dislocation. Generally, the atlantoaxial dislocation caused by fresh odontoid fractures can be fixed with odontoid screws, and the stability of the atlantoaxial joint can be regained after the fracture heals. For the atlantoaxial dislocation caused by the rupture of the transverse ligament of the atlas, surgery cannot repair the ruptured transverse ligament, and atlantoaxial fusion surgery can only be performed to restore the stability of the atlantoaxial spine. Commonly used atlantoaxial fusion techniques mainly include anterior and posterior techniques. [0003] At present, the medical treatment method for atlantoaxial dislocation caused by o...

Claims

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Application Information

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IPC IPC(8): A61B17/70
CPCA61B17/7001A61B17/7074
Inventor 刘浩陈华
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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