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Lower cervical spine anterior pedicle screw matching, fixing and retaining device

A technology of pedicle screw and anterior cervical spine, which is applied in the field of anterior cervical pedicle screw fixation and anti-off device, which can solve the problems of inability to adapt to anterior pedicle screw implantation and supporting use, large screw entry angle, etc. problems, to achieve the effect of improving the success rate of operation, safe use and simple structure

Inactive Publication Date: 2012-02-29
赵刘军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the application of preliminary clinical practice, we found that due to the large angle of entry of the anterior pedicle screw in the lower cervical spine, the existing cervical plate cannot adapt to the implantation and supporting use of the anterior pedicle screw. It is necessary to use the anterior pedicle screw to fix the detachment prevention device and gradually promote it in clinical practice

Method used

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  • Lower cervical spine anterior pedicle screw matching, fixing and retaining device
  • Lower cervical spine anterior pedicle screw matching, fixing and retaining device
  • Lower cervical spine anterior pedicle screw matching, fixing and retaining device

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Such as Figures 1 to 4 As shown, the lower cervical anterior pedicle screw is equipped with a fixation and anti-off device, including a plate body 1, wherein the plate body 1 is provided with at least two lower cervical anterior pedicle screws that are matched with the lower cervical anterior pedicle screw 5 The root implantation hole, the anterior pedicle implantation hole of the lower cervical spine has an angle of 30° to 60° camber with the sagittal plane of the plate body 1, and a movable angle of 0° to 15° with the horizontal plane of the plate body; When the anterior pedicle screw 5 is fully implanted, the cap of the lower cervical anterior pedicle screw 5 is located in the lower cervical anterior pedicle implantation hole and the lower cervical anterior pedicle screw 5 is in phase with the plate body 1. fixed. Because the anterior cervical pedicle screw 5 enters at a relatively large angle, the angle between the lower cervical anterior pedicle implant hole and ...

Embodiment 2

[0035] In the embodiment, the spare fixing hole 4 is the first spare fixing hole 41 . The parts not described are the same as the first embodiment.

[0036] The design of the anterior cervical pedicle screw supporting fixation and anti-off device is conducive to further strengthening the biomechanical properties of the anterior pedicle screw, and at the same time expanding the application range of the anterior lower cervical pedicle screw, which is conducive to the improvement of this technology. Good development and promotion. Due to the anatomical particularity of the pedicle of the lower cervical spine, the direction of the pedicle must be followed when the anterior pedicle screw is implanted, that is, the angle of the anterior pedicle screw of the lower cervical spine must be about 30-60 degrees of abduction, but none of the anterior cervical spine plates currently on the market meet this angle. Therefore, it is imminent to design an anterior cervical pedicle screw fixati...

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Abstract

The invention discloses a lower cervical spine anterior pedicle screw matching, fixing and retaining device. The lower cervical spine anterior pedicle screw matching, fixing and retaining device comprises a plate body, wherein the plate body is provided with two lower cervical spine anterior pedicle implanting holes matched with lower cervical spine anterior pedicle screws; the lower cervical spine anterior pedicle implanting holes form an outward inclination angle of 30 to 60 degrees with the sagittal plane of the plate body and form a moveable inclination angle of 0 to 15 degrees with the horizontal plane of the plate body; the screw caps of the lower cervical spine anterior pedicle screws are positioned in the lower cervical spine anterior pedicle implanting holes; the lower cervical spine anterior pedicle screws are matched with the plate body in a self-locking way; and the plate body is further provided with centrum pedicle screw implanting holes and spare fixing holes. The lowercervical spine anterior pedicle screw matching, fixing and retaining device has the advantages of simple structure, safety in use and wide application, and can match with the lower cervical spine anterior pedicle screws for use.

Description

technical field [0001] The invention relates to the technical field of cervical spine fixation and detachment prevention devices, in particular to an anterior lower cervical spine fixation and detachment prevention device matched with pedicle screws. Background technique [0002] There have been many reports on the use of anterior cervical restrictive or semi-restrictive plate fixation combined with vertebral monocortical screw fixation at home and abroad. However, for the technology of anterior pedicle screw in the lower cervical spine, it is just in its infancy abroad, with only sporadic clinical reports, and few systematic anatomical, imaging, and biomechanical research reports. Domestically, it is still in a blank stage. So far, there have been no basic research and clinical reports on the anterior lower cervical pedicle screw in China, let alone the design and application of the fixation and anti-off device for the anterior lower cervical pedicle screw. reports. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/70A61B17/80A61B17/86
Inventor 赵刘军宼万福
Owner 赵刘军
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