Thoracolumbar spine anterior system

An anterior vertebral approach, thoracolumbar technique, applied in the field of thoracolumbar anterior approach system, can solve the problems of internal fixation failure, improper placement of vertebral body screws, internal fixation failure, etc.

Pending Publication Date: 2020-03-27
浙江德康医疗器械有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For short-segment internal fixation in anterior surgery, the screw bears a large force, especially for vertebral fractures that need to be reset. The torque is large, and it is easy to cause complications such as screw loosening, which leads to failure of internal fixation, especially for children with vertebral fractures. body screws, the screws are easier to withdraw as they require pre-drilled holes for screw insertion
[0005] According to clinical reports, the common failure mode of anterior surgery is improper placement of vertebral body screws, and the failure mode includes screws embedded in the intervertebral disc or spinal canal, which induces serious complications and leads to internal fixation failure.

Method used

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  • Thoracolumbar spine anterior system
  • Thoracolumbar spine anterior system
  • Thoracolumbar spine anterior system

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Embodiment Construction

[0024] The specific implementation of this patent will be described in detail below in conjunction with the accompanying drawings. It should be pointed out that the examples of the preferred technical solutions of this patent should not be construed as limiting the scope of protection of this regulation.

[0025] In the art, there is a substantial distinction between anterior and posterior thoracolumbar approaches. The main reason is that the operation method in the anterior thoracolumbar spine is not easy to operate, and the risk of artificial introduction is high.

[0026] Nail-and-rod system

[0027] For example, in prior art, such as figure 1 As shown, the anterior screw placement method requires the screw to be screwed in at an angle of 10° to the central axis of the vertebral body, and the front edge of the screw just passes through the vertebral body and enters the contralateral cortex for 1-2 mm.

[0028] This implantation method currently has the following difficu...

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Abstract

The patent discloses a thoracolumbar spine anterior system. The thoracolumbar spine anterior system is characterized by including a screw-rod system. The screw-rod system comprises screws, screw caps,retainer ring and rods, wherein, the screw caps and the retainer ring are fixedly connected by a one-step locking manner. The surgical operation can be simplified in anterior surgery of the thoracolumbar vertebral body by using the above technical solution.

Description

technical field [0001] This patent belongs to the technical field of medical devices, and specifically relates to a thoracolumbar anterior approach system. Background technique [0002] With the continuous development of imaging, it has been found that most of the compression factors leading to spinal cord compression are in the front of the spinal canal, and the operation should be dedicated to the decompression of the front of the spinal canal. Decompression, good reduction and strong internal fixation. [0003] Compared with the posterior approach, the quality of anterior decompression is better, the scope is more thorough, and the risk of nerve injury is less. At the same time, anterior decompression supports bone grafting between the upper and lower adjacent vertebral bodies of the injured segment, which restores the height of the vertebral body and the sagittal balance of the spine, and restores the spine to a near-normal load distribution, effectively increasing the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/70A61B17/86
CPCA61B17/7001A61B17/7002A61B17/7074A61B17/861A61B17/8625A61B17/8635A61B17/862A61B17/8695A61B2017/8655
Inventor 许小波蔡宝春沈嘉桢
Owner 浙江德康医疗器械有限公司
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