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Atlas pedicle screw guide

A technology of pedicle screw and atlas pedicle, which is applied in the field of medical equipment to achieve the effect of improving accuracy, lower requirements, and reducing surgical bleeding

Inactive Publication Date: 2018-03-30
SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] How to make full use of the advantages of atlas pedicle screw internal fixation and place the screws accurately, safely and effectively has been studied by many scholars, but they mainly focus on the anatomical structure and mechanics of the atlas. There are few attempts to study the guide and the method of presetting the guide pin

Method used

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  • Atlas pedicle screw guide
  • Atlas pedicle screw guide
  • Atlas pedicle screw guide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The atlas pedicle screw guide in this embodiment is suitable for the situation where the gap between C1 (atlas) and C2 (axis) in the upper cervical spine is narrow and cannot be clamped by jaws. The posterior arch is usually thick and large in such individuals.

[0034] figure 1 It is a structural schematic diagram of the atlas pedicle screw guide in the first embodiment.

[0035] Such as figure 1 As shown, the atlas pedicle screw guide 100 includes a guide arm part 10, a guide cylinder part 12 and a fastening part 13, wherein the positioning part 11 and the guide cylinder part 12 are penetrated and installed in the guide arm part 10, and are The fastening portion 13 fixes the position. The positioning part 11 is fixedly connected with the posterior tubercle of the atlas, the guide arm part 10 and the guide tube part 12 are fixedly connected with the atlas, the guide tube part 11 corresponds to the implantation point, and the screw track guide pin is implanted in the...

Embodiment 2

[0059] In the second embodiment, the same structures as those in the first embodiment are given the same symbols, and the same explanations are omitted.

[0060] Figure 5 It is a structural schematic diagram of the atlas pedicle screw guide in the second embodiment; Image 6 It is a structural schematic diagram of the positioning part in the second embodiment.

[0061] The difference between the atlas pedicle screw guide 200 in the second embodiment and the guide in the first embodiment lies in the structure of the positioning part.

[0062] Such as Figure 5 with Image 6 As shown, the atlas pedicle screw guide 200 includes a guiding arm part 10 , a positioning part 20 , a guiding cylinder part 12 and a fastening part 13 . Wherein, the positioning part 20 has an anchoring unit 21 and an adjusting and fixing unit 22 .

[0063] The anchoring unit 21 has a first pliers mouth 23 and a second pliers mouth 24 engaged on the posterior tubercle, and a mounting leg 25 fixedly in...

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Abstract

The present invention provides an atlas pedicle screw guide, comprising a guide arm part, which is a straight frame with a through hole arranged in the middle part of the straight frame and guide grooves arranged on the left and right sides of the through hole, through which The hole is directly opposite to the posterior tubercle of the atlas, and the upper end surface is provided with a through threaded hole, and the upper end surfaces of the two guide grooves are symmetrically provided with two strip-shaped through holes; the positioning part is installed in the through hole through a fixed The anchoring unit installed on the posterior tubercle and the adjusting and fixing unit for adjusting and fixing the anchoring unit; the guiding cylinder part, including two guides that penetrate and install in two guiding grooves respectively and can move back and forth, left and right in the grooves. A needle guide cylinder, the guide needle guide cylinder is fixed in the guide groove according to the implantation point for the screw track guide needle to pass through; and a fastening part. Wherein, the upper half of the guide needle guide cylinder is provided with a T-shaped slot extending in the axial direction and matched with the fastener, and the lower half is provided with a guide needle passage for the nail track guide needle to pass through.

Description

technical field [0001] The invention belongs to the field of medical instruments, in particular to an atlas pedicle screw guide. Background technique [0002] The anatomical variation of the atlas is large, the structure is unique, there is no real pedicle, and it is adjacent to the medulla oblongata, vertebral artery, nerve root and venous plexus, all of which bring difficulties to the screw implantation of the atlas surgery and greatly increase the Surgical risks of internal fixation. [0003] There are many internal fixation methods for the upper cervical spine, such as Gallie technique, Brooks technique, laminar splint technique, Magerl technique, and atlas lateral mass screw technique. However, all of the above surgical methods have their disadvantages. For example, Gallie fusion has poor stability in anti-rotation movement, and it has been reported that the rate of bone non-fusion after fusion is high; Brooks technology can provide more stable anti-rotation than Galli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/90A61B17/92
CPCA61B17/88A61B17/92A61B2017/564A61B2017/922A61B17/90
Inventor 何大为刘军黄帅吕坤勇王文涛沈禹航吴东桦
Owner SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY