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Flexible rod for fixing vertebrae

A flexible, vertebral technology, applied in the field of rods to fix the vertebrae, can solve the problems of patients' pain and reduced bending range

Inactive Publication Date: 2010-03-24
崔吉运
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As inflowing material sticks to and collects in the helical grooves, the patient may feel pain and the range of flexion is reduced

Method used

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  • Flexible rod for fixing vertebrae
  • Flexible rod for fixing vertebrae
  • Flexible rod for fixing vertebrae

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0029] Reference will now be made in detail to the exemplary embodiments of the invention, an example of which is illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings and specification to refer to the same or like parts.

[0030] figure 1 and Figure 4The overall structure and internal cross-section of the flexible rod are shown. The flexible rod is connected to a pedicle fixation device comprising: a pedicle screw having a retaining groove and a threaded body, wherein the retaining groove is on an upper portion of the pedicle screw and has a predetermined depth, and the threaded body screwed into the pedicle to a predetermined depth and used as an anchoring portion of the pedicle; and a fixation device, which is inserted into the retaining groove of the pedicle screw and presses the flexible rod to prevent the flexible rod from moving, The flexible rod comprises: a plurality of support rods 2 and 3 ea...

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Abstract

A flexible rod for fixing vertebrae is connected to a vertebral fixing device in order to maintain a damaged or deformed vertebra in an original stable state and impart flexibility. The flexible rod comprises a plurality of support bars, each of which has an insertion recess that has internal threads on an open side thereof; a plurality of rings, which is disposed between the support bars and hasinternal threads; a spring, which has a spiral structure so as to be able to be coupled into the support bars in engagement with the threads of the support bars; and an elastic bar, which is insertedinto the support bars through the center of the spring.

Description

technical field [0001] The present invention relates to a rod for fixing vertebrae, which is used to assist damaged or deformed vertebrae to fully return to their original stable state. Background technique [0002] Various vertebral fixation devices are used to treat such vertebrae (vertebra). As an example, a vertebral fixation device includes a pedicle screw and an elastic rod for connecting the pedicle screw. When installing the vertebral fixation device, couple the pedicle screws to the respective pedicles that will be connected in a vertical direction, and fit the elastic rod for connecting the pedicle screws to the upper part formed on each pedicle screw. In the fastener (fastener) at place, fix elastic bar so that it is located in the fastening groove of the fastener of each pedicle screw. Tighten the set bolt to the internal threaded part of the fastener until its bottom squeezes the elastic rod. Thus, the elastic rods connected between the pedicles are firmly in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/70
CPCA61B17/7028A61B17/7026A61B17/7011A61B17/70A61B17/80
Inventor 崔吉运
Owner 崔吉运
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