Lateral mass fixing device of pedicle screw

A technology of pedicle screw and reinforcement device, applied in the direction of fixator, internal fixator, internal bone synthesis, etc., can solve the problems of insufficient pull-out force of axial screws and decreased pull-out force of cervical screws, etc., and achieve strong biomechanics. The effect of stability

Pending Publication Date: 2017-05-17
倪斌 +1
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem of insufficient axial screw pull-out force during the reduction in the existing atlantoaxial screw-rod system; it ...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Lateral mass fixing device of pedicle screw
  • Lateral mass fixing device of pedicle screw
  • Lateral mass fixing device of pedicle screw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0023] See figure 1 and 2 , shown in the figure is the lamina reinforcement device of the axis (or lower cervical spine) pedicle screw. The lamina reinforcement device is used in spinal surgery, and is a posterior screw-rod reduction and internal fixation device for the atlantoaxial vertebrae.

[0024] The lamina reinforcing device is mainly composed of a coupling nut 1, a jacking screw part 2, a universal arm 3, an arm locking nail 5 and the like.

[0025] The coupling nut 1 is used to cooperate with the screw base 4 of the axial (or lower cervical) pedicle screw. There is a longitudinal rod between the coupling nut 1 and the screw base 4 of the axial (or lower cervical) pedicle screw. Specifically, the coupling nut 1 has a nut upper part 11 and a nut lower part 12 below the nut upper part 11 . The nut upper part 11 has a nu...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a lateral mass fixing device of a pedicle screw. The lateral mass fixing device comprises a coupling nut, a jackscrew component, a universal arm and an arm locking fixing nail, wherein the coupling nut is used for combining a bolt base, and a vertical bar is arranged between the coupling nut and the screw base; the jackscrew component is located above the coupling nut, and the jackscrew component and the coupling nut are movably arranged; the universal arm is provided with an arm near end part, an arm far end part and a connecting part, the arm near end part is provided with long waist-shaped holes, the long waist-shaped holes are formed in a mode of surrounding the outer side of the rod part of the jackscrew and is located between the head of the jackscrew and the upper part of the nut, and the arm far end part is provided with an arm locking fixing hole; the arm locking fixing nail is matched with the arm locking fixing hole so as to make the universal arm and a cervical vertebra vertebral plate fixedly connected. The lateral mass fixing device of the pedicle screw has the advantages that through the connection between four parts of the coupling nut, the jackscrew component, the universal arm and the arm locking fixing nail and the pedicle screw of a dentata (or an inferior cervical vertebrae), the pedicle screw of the dentata (or the inferior cervical vertebrae) has a stronger withdrawal force.

Description

technical field [0001] The invention relates to internal fixation in spinal surgery, in particular to a lateral mass reinforcement device for pedicle screws, which is applied to atlantoaxial surgery or lower cervical spine surgery. Background technique [0002] There are 7 cervical vertebrae, the first cervical vertebra is also called the atlas, the second cervical vertebra is also called the axis vertebra, and the seventh cervical vertebra is also called the long vertebra. The first and second cervical vertebrae are collectively called the upper cervical vertebrae, and the third to seventh cervical vertebrae are collectively known as the lower cervical vertebrae. Posterior cervical screw-rod internal fixation can achieve atlantoaxial reduction through instrumental reduction during surgery, and screw-rod fixation has good biomechanical stability, so it is widely used in spinal surgery. The instrumental reduction mentioned above refers to partial reduction of the atlantoaxia...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): A61B17/70A61B17/86A61B17/84
CPCA61B17/7067A61B17/7071A61B17/844A61B17/86A61B17/8665A61B2017/868
Inventor 倪斌武乐成郭群峰杨珺
Owner 倪斌
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap