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Intervertebral distraction lift repositor

A reducer and intervertebral technology, applied in the field of medical devices, can solve problems such as nail pulling, trauma economy, loss, etc., and achieve the effect of avoiding loosening, simple and efficient operation

Active Publication Date: 2021-07-23
FIRST HOSPITAL AFFILIATED TO GENERAL HOSPITAL OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For patients with severe spondylolisthesis and difficulty in restoring the vertebral body, this process is likely to cause pedicle screw loosening or even screw removal, especially for osteoporosis patients, resulting in failure of internal fixation, which may require passive extension of the fixation segment. Cause greater trauma and economic loss

Method used

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  • Intervertebral distraction lift repositor
  • Intervertebral distraction lift repositor
  • Intervertebral distraction lift repositor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 shown, combined with Figure 2-9 As shown, the intervertebral stretching and pulling restorer of the present invention includes a body 7, the upper end of the body 7 is rotated to be provided with a driving gear 14, and the lower end of the body 7 is rotated to be provided with a driven gear 15, and the driving gear 14 and The driven gear 15 is sleeved with crawler belts 5 , the outer surface of the crawler belts 5 is provided with barbs 6 , and the two crawler belt straight sections between the driving gear 14 and the driven gear 15 are located on opposite sides of the body 7 respectively. On the side, the barbs 6 protruding from the body 7 on the straight section of the track are arranged. The reason why the barbs 6 protrude from the body 7 is arranged so that the barbs 6 can hook the vertebral bodies 17 and 18 .

[0028] Such as figure 1 shown, combined with figure 2 , 6 As shown, the inner surface of the crawler belt 5 is sleeved on the drivin...

Embodiment 2

[0039] like Figure 10 As shown, the difference between this embodiment and the first embodiment is that: the support frame 2 is fixedly connected with a handle 19 , and the handle 19 is located above the support frame 2 . The support frame 2 is fixedly connected with the handle 19 through an inverted U-shaped frame 20, and the two bottom ends of the inverted U-shaped frame 20 are fixedly connected to the two support plates 3 respectively, and the top surface of the inverted U-shaped frame 20 The handle 19 is fixedly connected to the top.

[0040] As described in the first embodiment, when the present invention is used, the main body 7 needs to be rotated, and the handle 19 is provided to facilitate the operator to hold the handle 19 to rotate the main body 7 .

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PUM

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Abstract

The invention discloses an intervertebral distraction lift repositor. The intervertebral distraction lift repositor comprises a body; a driving gear is rotationally arranged at the upper end of the body; a driven gear is rotationally arranged at the lower end of the body; the driving gear and the driven gear are sleeved with a crawler belt, barbs are arranged on the outer surface of the crawler belt; barbs are arranged on the outer surface of the crawler belt; two crawler belt straight sections between the driving gear and the driven gear are located at two opposite sides of the body respectively; and barbs on the crawler belt straight sections protrude from the body. The invention aims to provide an intervertebral distraction lift repositor, and the intervertebral distraction lift repositor can improve the vertebral body reposition efficiency and meanwhile, can avoid the risk that a pedicle screw gets loose.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to an intervertebral stretching and pulling resetter for treating spondylolisthesis. Background technique [0002] In the operation for the treatment of spondylolisthesis, the traditional technique is usually to reset the spondylolisthesis by lifting the pedicle screws of the spondylolisthesis after the intervertebral space is distracted. For patients with severe spondylolisthesis and difficulty in restoring the vertebral body, this process is likely to cause pedicle screw loosening or even screw removal, especially for osteoporosis patients, resulting in failure of internal fixation, which may require passive extension of the fixation segment. Cause greater trauma and economic loss. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an intervertebral stretching and pulling reducer, which can improve the efficiency of verteb...

Claims

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Application Information

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IPC IPC(8): A61B17/70
CPCA61B17/7074A61B17/7077
Inventor 刘建恒成俊遥刘鐘阳李明刘潇韩振川高建朋张珑张里程王征唐佩福
Owner FIRST HOSPITAL AFFILIATED TO GENERAL HOSPITAL OF PLA