A lumbar isthmus repair device

A technology for the isthmus and fixation device, which is applied in the field of lumbar isthmus repair devices, can solve problems affecting the bone graft bed and bone graft volume, poor bone graft healing, and posterior isthmus occlusion, achieving reasonable design, improved stability, The effect of improving the fixing strength

Active Publication Date: 2019-06-18
卿培东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the repair of lumbar spondylolisthesis, the currently used nail and hook system is not conducive to the bone graft because it blocks the bone graft bed and the fractured isthmus, and the bone graft is often poorly healed. After the fixation device is driven into the pedicle, the lamina is connected and fixed in the way of longitudinal connection when the connecting rod is put on, which causes the posterior isthmus to be blocked, thus affecting the bone grafting bed and the amount of bone grafting

Method used

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  • A lumbar isthmus repair device
  • A lumbar isthmus repair device
  • A lumbar isthmus repair device

Examples

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Embodiment 1

[0020] Such as figure 1 As shown, the present invention provides a lumbar isthmus repair device, which includes a first U-shaped fixing device 1, a connecting rod and a connecting mechanism. The connecting rod includes a cylindrical straight section 2 and a flat parabolic section 3, wherein the cylindrical straight section is a round rod with a diameter of 4 to 6 mm, and the flat parabola 3 adopts a flat design, which can realize reinforcement at corners, thereby avoiding internal fixation. A break occurs. One end of the cylindrical straight section 2 is fixed on one side of the first U-shaped fixing device 1 , and the other end is connected to one end of the flat parabola section 3 .

[0021] The connecting mechanism is connected to the other end of the flat parabola segment 3 . Such as figure 2 , 3 As shown, in this embodiment, the connecting mechanism includes a first spacer 4 (thickness 2-3 mm, width 6-8 mm) connected to the flat parabolic segment 3 and provided with ...

Embodiment 2

[0024] Such as Figure 4 As shown, the difference from Embodiment 1 is that the connecting mechanism includes a second L-shaped fixation device 10 connected to the flat parabolic segment 3, and a nail hook penetrating through the second L-shaped fixation device and driven laterally under the spinous process (that is, the double nail hook system, the lower nail hook can be a traditional hook). This embodiment is mainly applicable to the condition that the development of the spinous process is defective and cannot be fixed by nailing on one side of the spinous process.

[0025] The structure of the present invention seems to be simple, but it is not easy to think about it. Through its ingenious design, the designed lumbar vertebra repair device can be well applied to lumbar isthmus repair surgery, which is beneficial to bone grafting and good healing after bone grafting. Therefore, compared with the prior art, the present invention has outstanding substantive features and remar...

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Abstract

The invention discloses a lumbar vertebra isthmus repairing device which comprises a first U-shaped fixing device and a connecting rod with one end fixed on one side of the first U-shaped fixing device. The connecting rod comprises a cylindrical straight section and a flat parabolic section with one end connected with the cylindrical straight section and the other end provided with a connecting mechanism used for be transversely connected with and fixing a spinous portion. The lumbar vertebra isthmus repairing device is reasonable in structure, ingenious in design and convenient to operate, the problem that bone grafting by a bone grafting bed is affected due to the fact that rear isthmus is blocked after the connecting rod is arranged on the U-shaped fixing device in lumbar vertebra isthmus repairing operation is solved, and the lumbar vertebra isthmus repairing device is higher in stability and conducive to bone grafting and well healing after bone grafting.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a lumbar isthmus repair device. Background technique [0002] In the repair of lumbar spondylolisthesis, the currently used nail and hook system is not conducive to the bone graft because it blocks the bone graft bed and the fractured isthmus, and the bone graft is often poorly healed. After the fixation device was driven into the pedicle, the lamina was connected and fixed in the way of longitudinal connection when the connecting rod was put on, which caused the posterior isthmus to be blocked, thereby affecting the bone grafting bed and the amount of bone grafting. Contents of the invention [0003] Aiming at the shortcomings of the above-mentioned prior art, the present invention provides a device for repairing the isthmus of the lumbar spine, which can prevent the isthmus from being blocked, thereby successfully completing bone grafting and facilitating fusion and f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/70
CPCA61B17/7002A61B17/7044A61B17/7067A61B2017/564A61B2017/7073
Inventor 卿培东曹云刘利羊东
Owner 卿培东
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