Lumbar vertebra posterior approach fusion device

A fusion device and posterior approach, applied in medical science, prostheses, spinal implants, etc., can solve the problems of inconvenient implantation and low applicability, and achieve convenient implantation, less occlusion, safe and convenient implantation Effect

Inactive Publication Date: 2014-03-05
广州聚生生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the differences in patients' symptoms and lesion characteristics, the choice of surgeons' habits and surgical methods are not completely

Method used

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  • Lumbar vertebra posterior approach fusion device
  • Lumbar vertebra posterior approach fusion device
  • Lumbar vertebra posterior approach fusion device

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Embodiment

[0025] Such as figure 1 As shown, a multi-access lumbar posterior fusion device provided by the present invention includes a rectangular parallelepiped main body 1 and a developing needle 2 located on the main body. The cross section of the main body 1 is rectangular, and is composed of the main body front end 3, the main body end 4, the main body upper surface, the main body lower surface, the main body left side wall 7 and the main body right side wall 8, and the main body is hollow inside to form the main body cavity.

[0026] see figure 2 , the end 4 of the main body is provided with a threaded through hole 5, and auxiliary positioning holes 6 are distributed horizontally and symmetrically on both sides of the threaded through hole to facilitate the installation of the instrument, and the instrument and the cage are fully contacted during implantation, and the force is even.

[0027] Such as image 3 As shown, the left and right side walls of the main body are provided ...

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Abstract

The invention relates to a lumbar vertebra posterior approach fusion device. The fusion device comprises a cuboid device body and a developing needle located on the device body. The device body is composed of a device body front end, a device body tail end, a device body upper surface, a device body lower surface, a device body left side wall and a device body right side wall. The device body is hollow inside and forms a device body inner cavity, thread through holes are formed in the device body tail end, and bone grafting windows are formed in the device body left side wall and the device body right side wall respectively and communicated with the device body inner cavity; the developing needle is exposed out of the device body upper surface and communicated with the device body lower surface. The lumbar vertebra posterior approach fusion device has the advantages of being suitable in self size, peripheral wall thickness and terminal plate contact area, fits the human body physiological structure, can be filled with enough sclerotin, has a good supporting function, further can ensure bone ingrowth, is convenient to implant and can meet two operation modes of lumbar vertebra posterior approach and lumbar vertebra posterior approach through intervertebral foramina.

Description

technical field [0001] The invention relates to a lumbar intervertebral disc implant, which is a multi-entry lumbar posterior fusion device for treating lumbar intervertebral disc degeneration and lumbar instability. Background technique [0002] Lumbar intervertebral disc degeneration and subsequent lower lumbar instability and spondylolisthesis lead to abnormal activities of the lumbar spine under physiological loads, resulting in pathological changes such as bone and ligament compensatory hyperplasia, intervertebral space stenosis, joint degeneration, and spinal canal stenosis. A series of positive signs such as low back pain and lower extremity pain and numbness are caused, which seriously affects the work and life of the patient. Lumbar fusion is one of the classic methods for the treatment of lower lumbar instability and spondylolisthesis. It can restore the physiological radian of the spine, rebuild the stability of the lumbar spine, correct abnormal loading patterns ...

Claims

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Application Information

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IPC IPC(8): A61F2/44
CPCA61F2/44A61F2002/30001
Inventor 程顺巧尹泖谢坤张培发邹巍伟
Owner 广州聚生生物科技有限公司
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