Guide device for thoracolumbar solid pedicle screws

A pedicle screw and guiding device technology, applied in medical science, internal bone synthesis, fastening devices, etc., can solve the problems of complex operation, inaccurate screw placement, large trauma, etc., achieve uniform elastic strength, and facilitate accurate The effect of alignment guidance and accurate nail placement

Inactive Publication Date: 2016-12-07
THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNIV (GUANGZHOU RESPIRATORY CENT)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the existing percutaneous pedicle screws for the thoracolumbar spine are hollow pedicle screws, which need to be reamed and implanted under the guidance of a guide wire. lead to inaccurate nail placement

Method used

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  • Guide device for thoracolumbar solid pedicle screws
  • Guide device for thoracolumbar solid pedicle screws

Examples

Experimental program
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Effect test

Embodiment Construction

[0019] Such as Figure 1~2 The guide device for the solid pedicle screw of the thoracolumbar spine shown includes a tapered tube 1, a cylindrical channel tube 2 and a fixed handle 3 connected in sequence from front to back. The through hole 31 through which the rear end nozzle is connected, the inner diameter of the through hole 31 is equal to the inner diameter of the cylindrical channel pipe 2 rear end nozzle; the cross section of the tapered pipe 1 gradually increases from front to rear; The mouth of the nozzle is docked with the nozzle of the front end of the cylindrical channel pipe 2, and forms an annular connection line 4, along which a plurality of arc-shaped grooves 5 separated from each other are provided; A long straight groove 6 is formed through the wall of the tapered pipe 1 in the direction of the front end of the shaped pipe 1, and the middle part of the remaining arc-shaped groove 5 is formed through the wall of the tapered pipe 1 in the direction of the front...

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PUM

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Abstract

The invention discloses a guiding device for a solid pedicle screw of the thoracolumbar spine, which comprises a tapered tube, a cylindrical channel tube and a fixed handle which are sequentially connected from front to back. through holes; the cross-section of the tapered pipe gradually increases from front to back; the nozzle at the rear end of the tapered pipe is docked with the nozzle at the front end of the cylindrical channel pipe to form a ring-shaped connection line. There are arc-shaped grooves separated from each other; along the middle part of the arc-shaped grooves, a long straight groove is opened on the wall of the tapered pipe in the direction of the front end of the tapered pipe, and the middle part of the remaining arc-shaped grooves faces the front end of the tapered pipe A short straight groove is opened through the wall of the tapered pipe in the direction of the nozzle, and a first straight groove is provided on the wall of the tapered pipe along the direction from the nozzle of the front end of the tapered pipe to the front end of the short straight groove. The rear end is spaced apart from the front end of the short straight groove and forms a first connecting portion. The invention can realize the self-guiding of the solid pedicle screw with simple operation, so as to place the screw accurately.

Description

technical field [0001] The invention relates to accessories for pedicle screws, in particular to a guide device for thoracolumbar solid pedicle screws. Background technique [0002] Most of the existing percutaneous pedicle screws for the thoracolumbar spine are hollow pedicle screws, which need to be reamed and implanted under the guidance of a guide wire. Lead to inaccurate nail placement. Contents of the invention [0003] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide a guiding device for solid pedicle screws of the thoracolumbar spine, which can realize self-guiding of the solid pedicle screws with simple operation for accurate screw placement. [0004] The purpose of the present invention adopts following technical scheme to realize: [0005] The guiding device for the solid pedicle screw of the thoracolumbar spine includes a tapered tube, a cylindrical channel tube and a fixed handle connected in sequence ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/90
CPCA61B17/846A61B17/88A61B17/90
Inventor 何二兴尹知训崔基浩
Owner THE FIRST AFFILIATED HOSPITAL OF GUANGZHOU MEDICAL UNIV (GUANGZHOU RESPIRATORY CENT)
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