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Extending tension type non-fusion fixation system

A fixed system, non-fusion technology, applied in the field of medical devices, to achieve the effect of good tension and support

Inactive Publication Date: 2015-04-29
杨春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above problems, the present invention provides an extended stretch type non-fusion fixation system. non-fusion fixed puzzle

Method used

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  • Extending tension type non-fusion fixation system
  • Extending tension type non-fusion fixation system
  • Extending tension type non-fusion fixation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 and figure 2 As shown, two sets of pedicle screws are installed on the first connecting rod, and the first connecting rod is also connected by two first connecting pieces and two extension pieces, and one set of pedicle screws is installed on each extension piece In this way, four sets of pedicle screws are installed, which can support the fused lumbar spine in the middle and solve the problem of fused lumbar spine. The specific fusion position can be determined by adjusting the position of the pedicle screws.

Embodiment 2

[0040] Such as Figure 4 As shown, the two ends of the third connecting rod are respectively connected to a circular fixing part, and the second screw hole is set on the circular fixing part, and then the first connecting rod and the third connecting rod are respectively inserted into the circular fixing part and screwed The nut inserted into the second screw hole is tightened and locked.

Embodiment 3

[0042] Such as Figure 5 As shown, a circular fixing piece and a semicircular fixing piece are respectively connected through the two ends of the third connecting rod, the first screw hole is set at one end of the third connecting rod, the second screw hole is set on the circular fixing piece, and then the second A connecting rod and a third connecting rod are respectively inserted into the circular fixing part and the semicircular fixing part, and are fastened and locked by nuts screwed into the first screw hole and the second screw hole.

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Abstract

An extending tension type non-fusion fixation system comprises pedicle screws and a first connecting rod. Two ends of the first connecting rod are connected to the pedicle screws, and the first connecting rod is connected to two extending parts through first connectors. The system is capable of connecting with more than three lumbar vertebrae and forming at least three gaps by supporting, and the problem that an existing system is capable of connecting with two lumbar vertebrae and one gap in the prior art is solved; two pedicle screws are connected to the two ends of the first connecting rod, the first connecting rod is connected to the two extending parts through the first connectors, the extending parts are connected to at least four pedicle screws, the pedicle screws can be knocked into four lumbar vertebrae and form three gaps by supporting, by means of the biomechanical effects uplifting in space, the sufficient tension force and supporting force can be provided in a three-dimensional elastic space better.

Description

technical field [0001] The invention relates to a lumbar internal fixation system, in particular to an extended stretching non-fusion fixation system, which belongs to the technical field of medical devices. Background technique [0002] Patent ZL2013207349620 discloses a stretching non-fusion posterior lumbar fixation system, including two pedicle screws and a connecting piece, both ends of the connecting piece are set in a “U”-shaped structure, and the “U”-shaped A pedicle screw is respectively connected to the two ends of the structure, and it is characterized in that at least one bulge is arranged in the middle of the connecting piece, and the two ends of the bulge are respectively connected with one end of the two "U"-shaped structures. The patent has the following advantages: 1. The special three-dimensional design is replaced by stretching, which increases the span between stress points to a certain extent. The design of the connecting part is more scientific, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/70
CPCA61B17/7001A61B17/7074
Inventor 杨春
Owner 杨春
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